Journal articles: 'Boron compounds'

1

Mariategui, J. Francisco, and Kurt Niedenzu. "Boron-nitrogen compounds." Journal of Organometallic Chemistry 369, no. 2 (June 1989): 137–45. http://dx.doi.org/10.1016/0022-328x(89)88001-5.

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2

Sokmen, Nihal, and Banu Yeşim Buyukakinci. "THE USAGE OF BORON/ BORON COMPOUNDS IN THE TEXTILE INDUSTRY AND ITS SITUATION IN TURKEY." CBU International Conference Proceedings 6 (September 25, 2018): 1158–65. http://dx.doi.org/10.12955/cbup.v6.1309.

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Commonly found in the earth’s crust, boron happens to be the 51st element of the periodic table and is not found in its elemental state in nature. It is known that there are about 230 different boron minerals in nature. Turkey has the largest boron reserves in the world. In addition to this, Turkey’s boron minerals have the highest quality and production conditions that are more economical than other boron producing countries. For this reason, boron has great importance for Turkey and there is a significant demand for new areas of usage so that Turkey would be able to contribute to the national economy with these resources. The institute of BOREN (National Boron Research Institute) was established for this purpose in Turkey. This institute funds related projects for the extension of boron usage areas. One of the open sectors for innovation is textile technology.This study investigates the history of boron and its current situation in Turkey as well as the studies conducted regarding boron and its compounds especially in the textile field. Taking the available boron reserves in Turkey into consideration, the need for more research and development studies on boron as an environment-friendly element is clear for the textile industry.

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Clarke, C. M., M. K. Das, E. Hanecker, J. F. Mariategui, K. Niedenzu, P. M. Niedenzu, H. Noeth, and K. R. Warner. "Boron-nitrogen compounds. 113. Boron-halogenated pyrazaboles." Inorganic Chemistry 26, no. 14 (July 1987): 2310–17. http://dx.doi.org/10.1021/ic00261a029.

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4

Ali, Fayaz, Narayan S Hosmane, and Yinghuai Zhu. "Boron Chemistry for Medical Applications." Molecules 25, no. 4 (February 13, 2020): 828. http://dx.doi.org/10.3390/molecules25040828.

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Boron compounds now have many applications in a number of fields, including Medicinal Chemistry. Although the uses of boron compounds in pharmacological science have been recognized several decades ago, surprisingly few are found in pharmaceutical drugs. The boron-containing compounds epitomize a new class for medicinal chemists to use in their drug designs. Carboranes are a class of organometallic compounds containing carbon (C), boron (B), and hydrogen (H) and are the most widely studied boron compounds in medicinal chemistry. Additionally, other boron-based compounds are of great interest, such as dodecaborate anions, metallacarboranes and metallaboranes. The boron neutron capture therapy (BNCT) has been utilized for cancer treatment from last decade, where chemotherapy and radiation have their own shortcomings. However, the improvement in the already existing (BPA and/or BSH) localized delivery agents or new tumor-targeted compounds are required before realizing the full clinical potential of BNCT. The work outlined in this short review addresses the advancements in boron containing compounds. Here, we have focused on the possible clinical implications of the new and improved boron-based biologically active compounds for BNCT that are reported to have in vivo and/or in vitro efficacy.

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5

Zhu, Yinghuai, and Narayan S. Hosmane. "Nanostructured boron compounds for cancer therapy." Pure and Applied Chemistry 90, no. 4 (March 28, 2018): 653–63. http://dx.doi.org/10.1515/pac-2017-0903.

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Abstract Nanostructured boron compounds have emerged as one of the promising frontiers in boron chemistry. These species possess unique physical and chemical properties in comparison with classical small boron compounds. The nanostructured boron composites generally have large amounts of boron contents and thus have the potential to deliver significant amount of boron to the tumor cells, that is crucial for boron neutron capture therapy (BNCT). In theory, BNCT is based on a nuclear capture reaction with the 10B isotope absorbing a slow neutron to initiate a nuclear fission reaction with the release of energetic particles, such as lithium and helium (α particles), which travel the distance of around nine microns within the cell DNA or RNA to destroy it. The recent studies have demonstrated that the nanostructured boron composites can be combined with the advanced targeted drug delivery system and drug detection technology. The successful combination of these three areas should significantly improve the BNCT in cancer treatment. This mini review summarizes the latest developments in this unique area of cancer therapy.

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6

Broere, Daniël L. J., and Patrick L. Holland. "Boron compounds tackle dinitrogen." Science 359, no. 6378 (February 22, 2018): 871. http://dx.doi.org/10.1126/science.aar7395.

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7

Morris, John H., Henry J. Gysling, and David Reed. "Electrochemistry of boron compounds." Chemical Reviews 85, no. 1 (February 1985): 51–76. http://dx.doi.org/10.1021/cr00065a003.

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8

ZYSKOWSKI, CHRISTOPHER D., and VANCE O. KENNEDY. "Compounds in the series from boron subphthalocyanine to boron subnaphthalocyanine." Journal of Porphyrins and Phthalocyanines 04, no. 08 (December 2000): 707–12. http://dx.doi.org/10.1002/1099-1409(200012)4:8<707::aid-jpp285>3.0.co;2-v.

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The four compounds in the series from chloro[subphthalocyaninato]boron(III) to chloro[subnaphthalocyaninato]boron (III) where synthesized in a one-pot reaction. To obtain a more soluble set of compounds, the mixture was then reacted with the sodium salt of trihexylsilanol. This mixture was separated by chromatography to provide trihexylsiloxy[subphthalocyaninato]boron(III), trihexylsiloxy[ SubN 1 P 2]boron(III), trihexylsiloxy[ SubN 2 P 1]boron(III) and trihexylsiloxy[subnaphthalocyaninato]boron(III). These compounds were characterized by 1 H NMR, EI-MS and UV-vis. They show interesting spectral features in the visible region.

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9

Lee, Binna, Byeong-Hun Woo, and Jae-Suk Ryou. "Basic Mechanical and Neutron Shielding Performance of Mortar Mixed with Boron Compounds with Various Alkalinity." Sustainability 13, no. 11 (June 1, 2021): 6252. http://dx.doi.org/10.3390/su13116252.

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This study conducted fundamental tests on mortars using the boron compounds recycled industrial wastes to replace uneconomic boron products. The boron compounds were three types according to the pH and the physical and neutron shielding performance of mortar mixed with boron compounds was examined. The adopted boron compounds classified as acid, slightly alkaline, and strongly alkaline with respect to the pH are acidic boric acid, alkali borax, and high alkali borax, respectively. The physical properties were evaluated by measuring the compressive strength and setting time as well as the thermal neutron shielding performance. The measured compressive strength revealed that the strengths of the specimens mixed with boron compounds were generally lower than that of the basic specimen made of control specimen. In addition, the initial and final setting times were longer than those of the control specimen. The thermal neutron shielding performances of the specimens mixed with boron compounds were higher than that of the control specimen. Consequently, the differences of the type and chemical composition of boron compounds influenced the physical properties and thermal neutron shielding performance of mortar, including its compressive strength, setting time, and neutron shielding performance. Therefore, it is important to determine the optimal amount of boron compounds in the fabrication of mortar.

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10

ZYSKOWSKI, CHRISTOPHER D., and VANCE O. KENNEDY. "Compounds in the series from boron subphthalocyanine to boron subnaphthalocyanine." Journal of Porphyrins and Phthalocyanines 04, no. 07 (November 2000): 649–54. http://dx.doi.org/10.1002/1099-1409(200011)4:7<649::aid-jpp233>3.0.co;2-4.

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The four compounds in the series from chloro[subphthalocyaninato]boron(III) to chlo-ro[subnaphthalocyaninato]boron(III) were synthesized in a one-pot reaction. To obtain a more soluble set of compounds, the mixture was then reacted with the sodium salt of trihexylsilanol. This mixture was separated by chromatography to provide trihexylsiloxy[subphthalocyaninato]boron(III), trihexylsiloxy[ Sub N 1 P 2]boron(III), trihexylsiloxy[ Sub N 2 P 1]boron(III) and trihexylsiloxy[subnaphthalocyaninato]boron(III). These compounds were characterized by 1 H NMR , EI-MS and UV-vis. They show interesting spectral features in the visible region.

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11

Pomel’nikova, A. S., G. P. Fetisov, and V. M. Zhuk. "Structure formation in boron-rich iron–boron compounds." Russian Metallurgy (Metally) 2016, no. 13 (December 2016): 1227–30. http://dx.doi.org/10.1134/s0036029516130139.

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12

Stennett, Tom E., Arumugam Jayaraman, Tobias Brückner, Lea Schneider, and Holger Braunschweig. "Hydrophosphination of boron–boron multiple bonds." Chemical Science 11, no. 5 (2020): 1335–41. http://dx.doi.org/10.1039/c9sc05908c.

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13

Lötz, A., J. Voitländer, D. Stephenson, and J. A. S. Smith. "Nuclear Quadrupole Double Resonance of Compounds with Transannular Boron—Nitrogen Bonds." Zeitschrift für Naturforschung A 41, no. 1-2 (February 1, 1986): 200–202. http://dx.doi.org/10.1515/zna-1986-1-233.

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The boron and nitrogen nuclear quadrupole double resonance spectra of several ring compounds with transannular boron-nitrogen bonds are reported. The electron donation from nitrogen to boron as seen by their quadrupole coupling parallels the boron-nitrogen bond lengths. One of the compounds exhibits a transannular valence topomerisation between two identical boron-nitrogen pairs in solution which is frozen in the solid state but may possibly exist in a preformed state of this equilibrium from its quadrupole coupling. The oxygen-boron π-bond in boroxines, whose extent is deduced from the quadrupole coupling in one of the compounds with a boroxine-like structure at boron and in (PhBO)3, is approximately half as strong as the nitrogen-boron π-bond in borazine.

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14

Gitzhofer, K. "Reduction of Gaseous Boron Compounds in the Waste Gas of Glass Melting Furnaces." Advanced Materials Research 39-40 (April 2008): 641–46. http://dx.doi.org/10.4028/www.scientific.net/amr.39-40.641.

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For boron containing glasses, you have to consider a gaseous fraction in the exhaust gas besides the particulate boron compounds. Within the framework of a research project finished in the year 2005 investigations into the emission of particulate and gaseous boron compounds were carried out on 18 glass melting furnaces with boron containing batch. The plants are different with regard to the molten glasses, furnace type, type of firing as well as downstream emission control technologies. The precipitation of particulate boron compounds is unproblematic. The precipitation of gaseous boron compounds is clearly more difficult and further measures have to be taken in respect of the effective precipitation. In a current follow up project, especially the reduction potential of gaseous boron compounds is investigated through the installation of a high temperature sorption stage (injection of fine-ground glass raw materials into the exhaust gas flow behind the superstructure at exhaust gas temperatures of 1400 °C) and/or the injection of alkaline solutions into the waste gas at lower temperatures. Investigations in the exhaust gas of E-glass melters were carried out successfully. Reduction rates of more than 95 % could be proved for gaseous boron compounds. The activities are supported by thermo-chemical calculations in the run up and during the measurements.

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15

Fujikawa, Yoshiki, Yusuke Fukuo, Kai Nishimura, Kohei Tsujino, Hideki Kashiwagi, Ryo Hiramatsu, Naosuke Nonoguchi, et al. "Evaluation of the Effectiveness of Boron Neutron Capture Therapy with Iodophenyl-Conjugated closo-Dodecaborate on a Rat Brain Tumor Model." Biology 12, no. 9 (September 15, 2023): 1240. http://dx.doi.org/10.3390/biology12091240.

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High-grade gliomas present a significant challenge in neuro-oncology because of their aggressive nature and resistance to current therapies. Boron neutron capture therapy (BNCT) is a potential treatment method; however, the boron used by the carrier compounds—such as 4-borono-L-phenylalanine (L-BPA)—have limitations. This study evaluated the use of boron-conjugated 4-iodophenylbutanamide (BC-IP), a novel boron compound in BNCT, for the treatment of glioma. Using in vitro drug exposure experiments and in vivo studies, we compared BC-IP and BPA, with a focus on boron uptake and retention characteristics. The results showed that although BC-IP had a lower boron uptake than BPA, it exhibited superior retention. Furthermore, despite lower boron accumulation in tumors, BNCT mediated by BC-IP showed significant survival improvement in glioma-bearing rats compared to controls (not treated animals and neutrons only). These results suggest that BC-IP, with its unique properties, may be an alternative boron carrier for BNCT. Further research is required to optimize this potential treatment modality, which could significantly contribute to advancing the treatment of high-grade gliomas.

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16

Yinghuai, Zhu, Xinglong Lin, Hongming Xie, Jianlin Li, Narayan S. Hosmane, and Yingjun Zhang. "The Current Status and Perspectives of Delivery Strategy for Boronbased Drugs." Current Medicinal Chemistry 26, no. 26 (October 22, 2019): 5019–35. http://dx.doi.org/10.2174/0929867325666180904105212.

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Boron-containing compounds are essential micronutrients for animals and plants despite their low-level natural occurrence. They can strengthen the cell walls of the plants and they play important role in supporting bone health. However, surprisingly, boron-containing compounds are seldom found in pharmaceutical drugs. In fact, there are no inherent disadvantages reported so far in terms of the incorporation of boron into medicines. Indeed, drugs based on boron-containing compounds, such as tavaborole (marked name Kerydin) and bortezomib (trade name Velcade) have been investigated and they are used in clinical treatment. In addition, following the advanced development of boron neutron capture therapy and a new emerging proton boron fusion therapy, more boron-containing medicinals are to be expected. This review discusses the current status and perspectives of delivery strategy for boron-containing drugs.

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17

Niedenzu, Kurt, Philipp M. Niedenzu, and Kim R. Warner. "Boron-nitrogen compounds. 105. Boron derivatives of 3-methylpyrazole." Inorganic Chemistry 24, no. 10 (May 1985): 1604–6. http://dx.doi.org/10.1021/ic00204a041.

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18

Faisca Phillips, Ana Maria, and Armando J. L. Pombeiro. "Synthesis of Axially Chiral Boron Compounds." Symmetry 16, no. 1 (December 21, 2023): 11. http://dx.doi.org/10.3390/sym16010011.

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Boron-doped organic compounds display unique properties as a result of the presence of an empty p orbital on boron and the ability to switch between a trigonal planar and a tetrahedral geometry. In recent years, they have found several applications not only as synthetic reagents, e.g., in the Suzuki–Miyaura reaction, but also as pharmaceuticals and as specialized materials due to their optical and electronic properties. Some boron compounds may exist as atropisomers, and these rotamers may have different properties according to their sense of rotation. Synthetic strategies to separate them and, more recently, to obtain them in an asymmetric manner are becoming popular. In this review, we survey the literature on this emerging field of research.

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19

Nikonov, Georgii N., and Anna S. Balueva. "Compounds containing phosphorus and boron." Russian Chemical Reviews 61, no. 3 (March 31, 1992): 335–51. http://dx.doi.org/10.1070/rc1992v061n03abeh000948.

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20

Adonin, Nicolay Yu, and Vadim V. Bardin. "Polyfluorinated organic compounds of boron." Russian Chemical Reviews 79, no. 9 (November 16, 2010): 757–85. http://dx.doi.org/10.1070/rc2010v079n09abeh004136.

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21

Pelter, Andrew, Ram T. Pardasani, and Pushpa Pardasani. "The Photochemistry of Boron Compounds." Tetrahedron 56, no. 38 (September 2000): 7339–69. http://dx.doi.org/10.1016/s0040-4020(00)00533-0.

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22

Sivaev, Igor B., and Vladimir I. Bregadze. "Lewis acidity of boron compounds." Coordination Chemistry Reviews 270-271 (July 2014): 75–88. http://dx.doi.org/10.1016/j.ccr.2013.10.017.

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23

Rogl, Peter. "Boron, Borides, and Related Compounds." Journal of Solid State Chemistry 133, no. 1 (October 1997): 3–4. http://dx.doi.org/10.1006/jssc.1997.7585.

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24

Bauer, Josef, and Jean-François Halet. "Boron, Borides, and Related Compounds." Journal of Solid State Chemistry 154, no. 1 (October 2000): 1–2. http://dx.doi.org/10.1006/jssc.2000.8857.

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25

Coghi, Paolo Saul, Yinghuai Zhu, Hongming Xie, Narayan S. Hosmane, and Yingjun Zhang. "Organoboron Compounds: Effective Antibacterial and Antiparasitic Agents." Molecules 26, no. 11 (May 31, 2021): 3309. http://dx.doi.org/10.3390/molecules26113309.

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The unique electron deficiency and coordination property of boron led to a wide range of applications in chemistry, energy research, materials science and the life sciences. The use of boron-containing compounds as pharmaceutical agents has a long history, and recent developments have produced encouraging strides. Boron agents have been used for both radiotherapy and chemotherapy. In radiotherapy, boron neutron capture therapy (BNCT) has been investigated to treat various types of tumors, such as glioblastoma multiforme (GBM) of brain, head and neck tumors, etc. Boron agents playing essential roles in such treatments and other well-established areas have been discussed elsewhere. Organoboron compounds used to treat various diseases besides tumor treatments through BNCT technology have also marked an important milestone. Following the clinical introduction of bortezomib as an anti-cancer agent, benzoxaborole drugs, tavaborole and crisaborole, have been approved for clinical use in the treatments of onychomycosis and atopic dermatitis. Some heterocyclic organoboron compounds represent potentially promising candidates for anti-infective drugs. This review highlights the clinical applications and perspectives of organoboron compounds with the natural boron atoms in disease treatments without neutron irradiation. The main topic focuses on the therapeutic applications of organoboron compounds in the diseases of tuberculosis and antifungal activity, malaria, neglected tropical diseases and cryptosporidiosis and toxoplasmosis.

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26

BREGADZE, VLADIMIR I., IGOR B. SIVAEV, DETLEF GABEL, and DIETER WÖHRLE. "Polyhedral boron derivatives of porphyrins and phthalocyanines." Journal of Porphyrins and Phthalocyanines 05, no. 11 (November 2001): 767–81. http://dx.doi.org/10.1002/jpp.544.

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The synthesis of compounds containing polyhedral boron cages and porphyrin or phthalocyanine units connected covalently in one molecule is reviewed. The importance of these compounds arises, on the one hand, from the use of polyhedral boron derivatives in neutron capture therapy for cancer; on the other hand, porphyrins and phthalocyanines are known as photosensitizers in photodynamic tumor therapy. Current interest in the binding of polyhedral boron compounds to porphyrins and phthalocyanines is due to the observation that porphyrins and phthalocyanines show improved uptake and good persistence in tissues. Medical applications of compounds containing polyhedral boron cages and porphyrin or phthalocyanine units in one molecule are briefly discussed.

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27

Nandy, Soumilee, Swagata Paul, Kanak Kanti Das, Parveen Kumar, Debraj Ghorai, and Santanu Panda. "Synthesis and reactivity of alkynyl boron compounds." Organic & Biomolecular Chemistry 19, no. 34 (2021): 7276–97. http://dx.doi.org/10.1039/d1ob00465d.

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Alkynyl boron compounds have attracted profound interest in synthetic organic chemistry. This review article summarizes the various methods developed for the synthesis and reactivity of alkynyl boron compounds in a chronological manner.

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28

Brothers, Penelope J. "Tripping the Light Fantastic: Organoboron Compounds." Elements 13, no. 4 (August 1, 2017): 255–60. http://dx.doi.org/10.2138/gselements.13.4.255.

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Small molecules containing boron can play all sorts of roles in chemistry, biology and materials science. Molecular boron compounds display a wide range of unusual and fascinating structures, and their chemical reactivity can be very different from that of boron's next-door neighbour carbon. Some of the reasons for this will be considered and illustrated through applications in energy, medicine and new materials. The boron dipyrrins, also known as BODIPYs, are a prime example. They are strongly fluorescent when excited by illumination and are widely used as fluorescent tags in biology and as biosensors. More recently, they have been studied for their energy transfer properties in light-harvesting applications.

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Zheng, Changlin (Allen). "Examining the Benefits of Using Boron Compounds in Lithium Batteries: A Comprehensive Review of Literature." Batteries 8, no. 10 (October 17, 2022): 187. http://dx.doi.org/10.3390/batteries8100187.

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Boron and boron compounds have been extensively studied together in the history and development of lithium batteries, which are crucial to decarbonization in the automotive industry and beyond. With a wide examination of battery components, but a boron-centric approach to raw materials, this review attempts to summarize past and recent studies on the following: which boron compounds are studied in a lithium battery, in which parts of lithium batteries are they studied, what improvements are offered for battery performance, and what improvement mechanisms can be explained. The uniqueness of boron and its extensive application beyond batteries contextualizes the interesting similarity with some studies on batteries. At the end, the article aims to predict prospective trends for future studies that may lead to a more extensive use of boron compounds on a commercial scale.

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Tatiya, Shreyansh, Mohit Pandey, and Shantanu Bhattacharya. "Nanoparticles containing boron and its compounds—synthesis and applications: A review." Journal of Micromanufacturing 3, no. 2 (November 2020): 159–73. http://dx.doi.org/10.1177/2516598420965319.

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Nanomaterials have already contributed to many innovative products in the consumer markets. Constant efforts are directed at attaining unique morphologies and reduction in size. Exponential growth in research is thus involved in the synthesis of the novel nanomaterials. Boron and its compounds with distinct functional and structural properties find extensive usage in a variety of fields ranging from nuclear technology to electronics, ceramics, etc. Also, due to their non-toxicity, they are considered an attractive intermediate in the healthcare and cosmetic industry. The majority of reviews on boron and its compounds are focused on morphologies and the structure of the boron compound obtained. Here, we offer a comprehensive review of the unique properties of the major boron compounds: boron carbide (B4C), boron nitride (BN), and heterostructures with metals and organic compounds. In each section, we also describe the subsequent synthesis routes and the challenges associated with them. We have also summarized the various morphologies and shapes reported to be associated with boron and its compounds. In recent years, however, primary research on boron nanoparticle (BNP) has focused on non-toxic/greener and energy-efficient synthesis routes. The usage and production of pure BNPs in the industry are very scarce and are often associated with nanoclusters of boron and other elements. The intricate structural design and low purity of the nanoproducts formed make BNP synthesis challenging. Thus, in the last section, we summarize the challenges and outlook of the current research with future prospects in the area of BNP research.

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31

Gubanova, Natalya V., Alphiya R. Tsygankova, Evgenii L. Zavjalov, Alexander V. Romashchenko, and Yuriy L. Orlov. "Biodistribution of 10B in Glioma Orthotopic Xenograft Mouse Model after Injection of L-para-Boronophenylalanine and Sodium Borocaptate." Biomedicines 9, no. 7 (June 23, 2021): 722. http://dx.doi.org/10.3390/biomedicines9070722.

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Boron neutron capture therapy (BNCT) is based on the ability of the boron-10 (10B) isotope to capture epithermal neutrons, as a result of which the isotope becomes unstable and decays into kinetically active elements that destroy cells where the nuclear reaction has occurred. The boron-carrying compounds—L-para-boronophenylalanine (BPA) and sodium mercaptoundecahydro-closo-dodecaborate (BSH)—have low toxicity and, today, are the only representatives of such compounds approved for clinical trials. For the effectiveness and safety of BNCT, a low boron content in normal tissues and substantially higher content in tumor tissue are required. This study evaluated the boron concentration in intracranial grafts of human glioma U87MG cells and normal tissues of the brain and other organs of mice at 1, 2.5 and 5 h after administration of the boron-carrying compounds. A detailed statistical analysis of the boron biodistribution dynamics was performed to find a ‘window of opportunity’ for BNCT. The data demonstrate variations in boron accumulation in different tissues depending on the compound used, as well as significant inter-animal variation. The protocol of administration of BPA and BSH compounds used did not allow achieving the parameters necessary for the successful course of BNCT in a glioma orthotopic xenograft mouse model.

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32

Habben, C., L. Komorowski, W. Maringgele, A. Meller, and K. Niedenzu. "Boron-nitrogen compounds. 119. Reactions of boron heterocycles with pyrazole." Inorganic Chemistry 28, no. 13 (June 1989): 2659–63. http://dx.doi.org/10.1021/ic00312a031.

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33

Power, Philip P. "Synthesis and characterization of compounds with boron-boron double bonds." Inorganica Chimica Acta 198-200 (August 1992): 443–47. http://dx.doi.org/10.1016/s0020-1693(00)92388-0.

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34

Li, Qiulin, Yawen Yang, Qingfeng Wang, Xiang Han, Junfeng Zhu, Nan Zhang, Qiuhong Wang, Kanshe Li, Pin Gong, and Fuxin Chen. "11B NMR of the Morphological Evolution of Traditional Chinese Medicine Borax." Molecules 29, no. 1 (January 3, 2024): 251. http://dx.doi.org/10.3390/molecules29010251.

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This article applies nuclear magnetic resonance technology to the study of boron-containing traditional Chinese medicine, in order to explore the morphological evolution of boron elements in traditional Chinese medicine. Borax is a traditional Chinese medicine with anti-corrosion, anti-inflammatory, antibacterial, and anticonvulsant effects. It is made by boiling, removing stones, and drying borax minerals like borate salts. This article introduces an 11B nuclear magnetic resonance method for identifying and characterizing boron-containing compounds in TCM. We applied this technology to borax aqueous solutions in different chemical environments and found that with boron mixed in the form of SP2 hybridization in equilateral triangles and SP3 hybridization in equilateral tetrahedra, the pH changes in alkaline environments significantly affected the ratio of the two. At the same time, it was found that in addition to the raw material peak, boron signals of other boron-containing compounds were also detected in 20 commercially available boron-containing TCM preparations. These new boron-containing compounds may be true pharmaceutical active ingredients, and adding them directly to the formula can improve quality and safety. This article describes the detection of 11B NMR in boron-containing traditional Chinese medicine preparations. It is simple, non-destructive, and can provide chemical fingerprint studies for boron-containing traditional Chinese medicine.

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Stepina, Irina, Aleksey Zhukov, and Sofia Bazhenova. "Modification of Cellulosic Materials with Boron-Nitrogen Compounds." Polymers 15, no. 13 (June 23, 2023): 2788. http://dx.doi.org/10.3390/polym15132788.

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Wood fiber and its products are modified to increase fire and bio-resistance. The best results are achieved by using modifiers that enter into chemical interaction with the hydroxylated substrate, forming the organic matrix of the materials. The purpose of the research described in the article was to study the possibility of using boron-nitrogen compounds to modify cellulose and cellulose-containing materials to improve the performance, bio- and fire-protective properties of construction materials, as well as to optimize the consumption of boron-nitrogen compounds. As a result of the research, it was found that the boron-nitrogen compounds used in the compositions developed here chemically interact with hydroxyl groups at the C6-atom of cellulose. The chemical interaction of boron-nitrogen compounds with cellulose is an inter-crystalline process occurring without destruction of the crystal structure of the substrate since the modifier molecules bind with the more accessible hydroxyl groups of the amorphous regions of cellulose. Thus, surface modification with boron-nitrogen compounds does not result in accelerated aging of cellulose-containing materials and loss of strength but, on the contrary, increases the durability of wooden structures.

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Borazan, Alev Akpinar, and Duygu Gokdai. "Pine Cone and Boron Compounds Effect as Reinforcement on Mechanical and Flammability Properties of Polyester Composites." Open Chemistry 16, no. 1 (May 23, 2018): 427–36. http://dx.doi.org/10.1515/chem-2018-0054.

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AbstractNatural fibers are known to be environmentally friendly, and they can be used as an alternative to glass and carbon fibers because of their low cost. Pine cone fibers are a good choice for use in composite manufacturing because they mainly consist of cellulose, hemicelluloses, and lignin macromolecules which provide a hydrophilic character.The potential pine cone forest reserve of Turkey is 54,000 ha. Boron compounds such as borax, boric acid. and zinc borate are generally used for their flame-retardant effect. In this study, three kinds of boron compounds, boron oxide, borax pentahydrate and borax decahydrate, were used to provide better mechanical properties and better incombustibility. The synergistic effects of both waste pine cone and boron compounds were sampled for the manufacture of polyester composites by using a casting process. The composites produced with different fiber contents were characterized by some mechanical properties (bending strength, flexural modulus, izod impact); physical analyses (water absorption, swelling thickness, open porosity, bulk density); flame retardancy (LOI); and TGA, SEM-EDS, and FT-IR analyses. According to mechanical test results, boron oxide showed better bending strength and flexural modulus compared to the other boron compounds. The LOI of composites with a boron compound was higher than the composites with only pine cone reinforcement.

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Castilla-Martinez, Carlos A., Romain Moury, Salem Ould-Amara, and Umit B. Demirci. "Destabilization of Boron-Based Compounds for Hydrogen Storage in the Solid-State: Recent Advances." Energies 14, no. 21 (October 26, 2021): 7003. http://dx.doi.org/10.3390/en14217003.

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Boron-based materials have been widely studied for hydrogen storage applications. Examples of these compounds are borohydrides and boranes. However, all of these present some disadvantages that have hindered their potential application as hydrogen storage materials in the solid-state. Thus, different strategies have been developed to improve the dehydrogenation properties of these materials. The purpose of this review is to provide an overview of recent advances (for the period 2015–2021) in the destabilization strategies that have been considered for selected boron-based compounds. With this aim, we selected seven of the most investigated boron-based compounds for hydrogen storage applications: lithium borohydride, sodium borohydride, magnesium borohydride, calcium borohydride, ammonia borane, hydrazine borane and hydrazine bisborane. The destabilization strategies include the use of additives, the chemical modification and the nanosizing of these compounds. These approaches were analyzed for each one of the selected boron-based compounds and these are discussed in the present review.

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Shen, Dong Liang, Xiao Ping Yu, Ya Fei Guo, Shi Qiang Wang, and Tian Long Deng. "Boron and its Compounds in New Energy and Materials Fields." Applied Mechanics and Materials 71-78 (July 2011): 2594–97. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.2594.

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Boron and its compounds play an important role in modern energy and material sciences for the bight application prospect. The applications of boron and its compounds in material fields especially advanced materials including permanent magnetic, superconducting, boride cermets, boron-based fuel-rich propellants and borate whisker materials were summarized in this paper, and the new trend for the exploitation and application was also pointed out.

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Türkez, Hasan, Fatime Geyikoǧlu, Abdulgani Tatar, Sait Keleş, and Asuman Özkan. "Effects of Some Boron Compounds on Peripheral Human Blood." Zeitschrift für Naturforschung C 62, no. 11-12 (December 1, 2007): 889–96. http://dx.doi.org/10.1515/znc-2007-11-1218.

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Peripheral blood cultures were exposed to various doses (5 to 500 mg/L) of boron compounds. Sister-chromatid exchange, micronucleus and chromosomal aberration tests were applied to estimate the DNA damage, and biochemical parameters (superoxide dismutase, catalase, glutathione peroxidase, glutathione-S-transferase, glucose-6-phosphate dehydrogenase, total glutathione, malondialdehyde and total antioxidant capacity) were examined to determine oxidative stress. According to our findings, various boron compounds at low doses were useful in supporting antioxidant enzyme activities in human blood cultures. It was found that the boron compounds do not have genotoxic effects even in the highest concentrations, though in increasing doses they constitute oxidative stress. It is concluded that the tested boron compounds can be used safely, but it is necessary to consider the tissue damages which are likely to appear depending on the oxidative stress.

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WANISHDILOKRATN, THITI, SIRILUK SUKJAREON, ITSAREE HOWPINJAI, and LAMTHAI ASANOK. "ENHANCING LEUCAENA LEUCOCEPHALA WOOD PRESERVATION BY STEEPING IT IN BORON COMPOUNDS AND ACETIC ACID TO PROTECT AGAINST TERMITES." Wood Research 67, no. 2 (April 19, 2022): 213–20. http://dx.doi.org/10.37763/wr.1336-4561/67.2.213220.

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This study compared steeping Leucaena leucocephala woodwith boron compounds andacetic acidto protect it from termites(Coptotermes gestroi).The experiment had acompletely randomized designwith 10 treatments involving three wood preservatives (acetic acid, boron compounds, and mixtures of both),three treatment lengths (1, 12, and 24 h),and untreated wood, with five replicates of each for a total of 50 conditions. The moisture content of thewood and the wood destroyed by termites were assessed. The L.leucocephalawood treated with boron compounds for 1 h resulted increase in moisture contentand no termite damage.

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41

WANISHDILOKRATN, THITI, SIRILUK SUKJAREON, ITSAREE HOWPINJAI, and LAMTHAI ASANOK. "ENHANCING LEUCAENA LEUCOCEPHALA WOOD PRESERVATION BY STEEPING IT IN BORON COMPOUNDS AND ACETIC ACID TO PROTECT AGAINST TERMITES." Wood Research 67, no. 2 (April 19, 2022): 221–30. http://dx.doi.org/10.37763/wr.1336-4561/67.2.221230.

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This study compared steeping Leucaena leucocephala woodwith boron compounds andacetic acidto protect it from termites(Coptotermes gestroi).The experiment had acompletely randomized designwith 10 treatments involving three wood preservatives (acetic acid, boron compounds, and mixtures of both),three treatment lengths (1, 12, and 24 h),and untreated wood, with five replicates of each for a total of 50 conditions. The moisture content of thewood and the wood destroyed by termites were assessed. The L.leucocephalawood treated with boron compounds for 1 h resulted increase in moisture contentand no termite damage.

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ÇELEBİ, Özgür, Demet ÇELEBİ, Ali TAGHİZADEHGHALEHJOUGHİ, Sümeyye BAŞER, Mustafa Can GÜLER, and Serkan YILDIRIM. "The Antibacterial Effect of Boron Compounds and Evaluation of the Effects on Biofilm Formation in the Infection Model of Klebsiella pneumoniae on the HepG2 Cell Line." Journal of Contemporary Medicine 13, no. 1 (January 31, 2023): 12–18. http://dx.doi.org/10.16899/jcm.1176900.

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Aim: Klebsiella pneumoniae causes hospital-acquired pneumonia, urinary tract infection and bacteremia in immunocompromised patients. Klebsiella pneumoniae, which has become more common recently, causes antibiotic resistance as well as pyogenic liver abscesses and hematogenous metastatic spread in humans. Developing antibiotic resistance complicates the treatment of liver infections. In our study, we aimed to evaluate the effect of boron compounds in an infection model created by Klebsiella pneumoniae 700603. Materials and Methods: Minimum inhibitory concentration and fractional inhibitory concentration studies, resistance gene levels, and HepG2 cell analyses were performed and evaluated. Results: We determined the low and high minimum inhibitory concentration values of boron components, sodium perborate monohydrate and etidote, respectively. In addition, sodium perborate monohydrate is also effective on biofilm formation and resistance genes. Our findings have shown that boron compounds are more effective when used in a combination. In the toxicity model created in the cellular study, the boron compounds cytotoxic effect decreased due to their antibacterial effects. Conclusion: İt seems that boron compounds are effective, and the positive effect increases when used together.

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Kuştaş, Süleyman, and Sezgin Koray Gülsoy. "Boron Compounds-Added Kraft Pulping from Scots Pine." Drvna industrija 74, no. 1 (March 25, 2023): 43–52. http://dx.doi.org/10.5552/drvind.2023.0014.

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In this study, effects of KBH4 (PB), NaBH4 (SB), Etibor-48 (E48), Etidot-67 (E67), and colemanite (Col) on kraft pulp and paper properties of Scots pine (Pinus sylvestris L.) wood were evaluated. The control and boron compound-added kraft pulps were obtained under constant cooking conditions. The boron compounds were used as digester additives in different ratios (2 % and 4 %). The addition of boron compounds to kraft cooking liquor resulted in increases screened and total yield of pulps. The highest screened yield (52.05 %) and total yield (55.09 %) were obtained from PB-4 pulp. The lowest reject ratio (0.61 %) and kappa number (34.60) were determined from PB-2 pulp. Furthermore, the highest tensile properties of handsheets were obtained from E67-4 pulp. Also, E48-4 pulp had the highest burst index and tear index values. E48, E67, and Col are cheaper than PB and SB. From these boron compounds, pulps with relatively low pulp yield but stronger can be obtained.

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Li, Chen Chen, Zhi Yong Qin, Qian Zhang, and Jiang Zhang Li. "Surface Free Energy of Boron-Compounds Modified Poplar Veneer." Advanced Materials Research 753-755 (August 2013): 843–47. http://dx.doi.org/10.4028/www.scientific.net/amr.753-755.843.

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The contact angle of three different reference liquids (i.e. distilled water, diiodomethane, and formamide) was measured by the sessile drop method by gently placing droplet onto the surface of the boron-compounds treated poplar veneer in this study. The permeability of the modified poplar veneer was evaluated. The surface free energy, as well as two components, namely, Lifshizvander Waals(LW) and Acid-base(AB), were calculated by the Acid-base theory, whereas the polar and nonpolar components were calculated according to the OWRK theory. The result shows that the initial contact angle of boron-compounds modified poplar veneer are significantly less than the untreated wood, which indicates that the wettability of boron-compounds polar veneer is better than the untreated wood. The same situation applies to the permeability. In addition, the surface free energy of boron-compounds modified poplar veneer is reduced, but the difference is very small.

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Seneviratne, Danushka S., Omran Saifi, Yuri Mackeyev, Timothy Malouff, and Sunil Krishnan. "Next-Generation Boron Drugs and Rational Translational Studies Driving the Revival of BNCT." Cells 12, no. 10 (May 16, 2023): 1398. http://dx.doi.org/10.3390/cells12101398.

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BNCT is a high-linear-energy transfer therapy that facilitates tumor-directed radiation delivery while largely sparing adjacent normal tissues through the biological targeting of boron compounds to tumor cells. Tumor-specific accumulation of boron with limited accretion in normal cells is the crux of successful BNCT delivery. Given this, developing novel boronated compounds with high selectivity, ease of delivery, and large boron payloads remains an area of active investigation. Furthermore, there is growing interest in exploring the immunogenic potential of BNCT. In this review, we discuss the basic radiobiological and physical aspects of BNCT, traditional and next-generation boron compounds, as well as translational studies exploring the clinical applicability of BNCT. Additionally, we delve into the immunomodulatory potential of BNCT in the era of novel boron agents and examine innovative avenues for exploiting the immunogenicity of BNCT to improve outcomes in difficult-to-treat malignancies.

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Baker, Stephen J., Charles Z. Ding, Tsutomu Akama, Yong-Kang Zhang, Vincent Hernandez, and Yi Xia. "Therapeutic potential of boron-containing compounds." Future Medicinal Chemistry 1, no. 7 (October 2009): 1275–88. http://dx.doi.org/10.4155/fmc.09.71.

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Dewar, Michael J. S., Caoxian Jie, and Eve G. Zoebisch. "AM1 calculations for compounds containing boron." Organometallics 7, no. 2 (February 1988): 513–21. http://dx.doi.org/10.1021/om00092a043.

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Schwartz, J., and I. Zviedre. "Boron coordination compounds with hydroxycarboxylic acids." Acta Crystallographica Section A Foundations of Crystallography 52, a1 (August 8, 1996): C295. http://dx.doi.org/10.1107/s0108767396087739.

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Johnson, Stephen E., and M. Frederick Hawthorne. "Rings Compounds of Boron and Phosphorus." Phosphorus, Sulfur, and Silicon and the Related Elements 64, no. 1-4 (January 1992): 7–13. http://dx.doi.org/10.1080/10426509208041122.

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Barba, Victor, and Isabel Betanzos. "Direct synthesis of polymacrocyclic boron compounds." Journal of Organometallic Chemistry 692, no. 22 (October 2007): 4903–8. http://dx.doi.org/10.1016/j.jorganchem.2007.07.035.

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Journal articles on the topic 'Boron compounds'

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