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Journal articles on the topic 'UV-visible spectroscopic'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Ranu, Chaturvedi and Swati Singh. "A REVIEW ON UV-VIS SPECTROSCOPY – THEORY & APPLICATIONS." International Journal of Management, Law & Science Studies, IJMLSS 02, no. 5 (2025): 1–8. https://doi.org/10.5281/zenodo.14584615.

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Ultraviolet and visible spectrometers have been in general use for the last 35 years end over this period have become the most important analytical instrument in the modernday laboratory. UV – Visible spectroscopy is useful as an analytical technique for two reasons; first , it can be used to identify some functional groups in molecules; secondly , it can be used for assaying . the second role is used to determine the content and the strength of a substance is very useful. Spectroscopic techniques emphatically UV – Visible spectroscopy is used to provide many answers in chemical an

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2

Nguyen, Tho Truong, Thi Minh Cao, Hieu Van Le, and Viet Van Pham. "Investigation of Some Characterizations of Black TiO\(_2\) Nanotubes Via Spectroscopic Methods." Communications in Physics 29, no. 2 (2019): 189. http://dx.doi.org/10.15625/0868-3166/29/2/13762.

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The black TiO\(_2\) with substantial Ti\(^3+\) and oxygen vacancies exhibit an excellent photoelectrochemical water-splitting performance due to the improved charge transport the extended visible light response. In this study, black TiO\(_2\) nanotube arrays synthesized by the anodization method, and then, they have been investigated some characterizations by spectroscopic methods such as UV-visible reflectance (UV-vis DRS), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, and photoluminescence spectrum. The results showed that some highlighted properties of the black TiO2 n

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3

Matama, K., M. Yoshikawa, T. Kobayashi, Y. Kubota, and T. Cho. "Spectroscopic Measurement Using Wide Range UV/Visible Spectroscopic System GAMMA 10." Fusion Science and Technology 51, no. 2T (2007): 253–55. http://dx.doi.org/10.13182/fst07-a1366.

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4

Girma, Wubshet Mekonnen. "Synthesis of Carbon-Encapsulated Magnetic Iron Oxide Nanocomposites for Bioapplication." International Journal of Biomaterials 2022 (September 20, 2022): 1–5. http://dx.doi.org/10.1155/2022/3302082.

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Carbon-encapsulated Fe3O4 nanoparticles (NPs) were successfully synthesized from a single precursor using one-step solvothermal methods. X-ray diffraction and transmission electron microscopy were used to characterize the as-prepared NPs, and UV-visible absorbance spectroscopy was used to check their optical properties. The morphological results revealed that Fe3O4@C, quasi-spherical Fe3O4 particles encapsulated by carbon. In addition, the carbon-encapsulated Fe3O4 NPs were conjugated with folic acid (FA) to be used as biomarkers in the diagnosis and treatment of tumour cells. Fourier transfor

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Basavaiah, K., and A. V. Prasada Rao. "Preparation and Characterization of P-TSA Doped Tetraaniline NanorodsviaMicellar-Assisted Method." E-Journal of Chemistry 9, no. 3 (2012): 1175–80. http://dx.doi.org/10.1155/2012/679462.

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In this work, we report preparation and characterization of P-toluene sulphonic acid (P-TSA) doped tetraaniline nanorods by micellar assisted method using ammonium per sulphate (APS) as an oxidant. Here, PTSA acts as dopant as well as template for tetraaniline nanostructures. The synthesized tetraaniline nanorods have been well characterized by Fourier transform infrared spectroscopy (FTIR), FT Raman spectroscopy, UV-Visible spectroscopy (UV-Visible), Scanning electron microscopy (SEM) and thermogravimetry. The morphologies of tetraaniline were found to be dependent on molar ratios of N-phenyl

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6

AM, Gbaj. "Characterization of Libyan Cobra (Naja haje) Venom using Fluorescence and UV-Visible Spectroscopy." Medicinal and Analytical Chemistry International Journal 4, no. 1 (2020): 1–4. http://dx.doi.org/10.23880/macij-16000156.

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Snake venoms act as a preparative to defend animals against predators and helps in immobilizing and digestion of prey. Venoms consist of a combination of enzymes and toxins, such as metalloproteases, phospholipase A2, L-amino acid oxidase and toxins, including cytotoxins and neurotoxins. In addition to their toxicity, venom components exhibit several pharmacological activities and can be used as templates for drug design. The Libyan cobra venom was studied using UV-visible and fluorescence spectroscopic techniques. The cobra protein main chain absorbs light in the region of 240-340nm. The arom

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Dalmau, Rafael, Samuel Kirby, Jeffrey Britt, and Raoul Schlesser. "(Invited) Deep Level Defects in AlN Studied By UV-Visible Spectroscopy." ECS Transactions 109, no. 8 (2022): 31–40. http://dx.doi.org/10.1149/10908.0031ecst.

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Ultraviolet-visible (UV-Vis) spectroscopy was used to measure the optical absorption and emission from high-quality, 2-inch AlN substrates grown by physical vapor transport (PVT). Spatially uniform UV absorption coefficients below 20 cm-1 at 4.68 eV (265 nm) were demonstrated. The complementary spectroscopic data were used to elucidate the mechanism of UV absorption reduction in AlN containing high levels of the carbon impurity and co-doped with Si. Formation of a carbon-silicon defect complex, which shifted the absorption deeper in the UV, was demonstrated by photoluminescence (PL) emission a

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8

John, Peter Paul J. "PHYTOCHEMICAL ANALYSIS OF METHANOLIC EXTRACT OF CAULERPA SCALPELLIFORMIS (R.BR.) WEB. V. BOSSE COLLECTED FROM HARE ISLAND, THOOTHUKUDI, TAMIL NADU, INDIA." INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES 05, no. 03 (2018): 1905–8. https://doi.org/10.5281/zenodo.1211641.

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The plan of the present study was to explore the phytochemicals in the methanolic extract of Caulerpa scalpelliformis (R.Br.) Web. V. Bosse collected from Hare Island, Thoothukudi, Tamil Nadu, India. The phytochemical screening of methanolic extract was studied using the standard procedure using UV-Visible spectroscopic and FTIR. The UV-Visible spectrum was found to have the presence of the compounds separated at the nm of 246.5, 340, 391.5, 447.5, 531.5 and 662 with the absorption 3.917, 3.838, 3.954, 3.898, 1.331 and 3.103 respectively. The FTIR analysis showed the presence of functional gro

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9

John, Peter Paul J. "PHYTOCHEMICAL ANALYSIS OF METHANOLIC EXTRACT OF CAULERPA SCALPELLIFORMIS (R.BR.) WEB. V. BOSSE COLLECTED FROM HARE ISLAND, THOOTHUKUDI, TAMIL NADU, INDIA." INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES 05, no. 03 (2018): 1905–8. https://doi.org/10.5281/zenodo.1295591.

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The plan of the present study was to explore the phytochemicals in the methanolic extract of Caulerpa scalpelliformis (R.Br.) Web. V. Bosse collected from Hare Island, Thoothukudi, Tamil Nadu, India. The phytochemical screening of methanolic extract was studied using the standard procedure using UV-Visible spectroscopic and FTIR. The UV-Visible spectrum was found to have the presence of the compounds separated at the nm of 246.5, 340, 391.5, 447.5, 531.5 and 662 with the absorption 3.917, 3.838, 3.954, 3.898, 1.331 and 3.103 respectively. The FTIR analysis showed the presence of functional gro

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10

Mancaruso, Ezio, and Bianca Maria Vaglieco. "UV-Visible Spectroscopic Measurements of Dual-Fuel PCCI Engine." SAE International Journal of Fuels and Lubricants 4, no. 2 (2011): 271–81. http://dx.doi.org/10.4271/2011-24-0061.

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11

Desai, Rucha, Venu Mankad, SanjeevK Gupta, and PrafullaK Jha. "Size Distribution of Silver Nanoparticles: UV-Visible Spectroscopic Assessment." Nanoscience and Nanotechnology Letters 4, no. 1 (2012): 30–34. http://dx.doi.org/10.1166/nnl.2012.1278.

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12

Hope, Eric G. "UV-visible spectroscopic studies on the platinum-metal pentafluorides." Polyhedron 12, no. 24 (1993): 2977–80. http://dx.doi.org/10.1016/s0277-5387(00)80049-2.

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13

Wang, Qi, Lixin Song, Yan Zhao, and Linxian Feng. "UV-Visible Spectroscopic Study ofrac-Et(Ind)2ZrCl2/Aluminoxanes." Macromolecular Rapid Communications 22, no. 13 (2001): 1030–34. http://dx.doi.org/10.1002/1521-3927(20010901)22:13<1030::aid-marc1030>3.0.co;2-r.

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14

More, R. D. "Eco-Friendly Green Synthesis of MgO Nanoparticles from Zingiber Officinale(Ginger) Root Extract and its Antibacterial Application." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (2021): 4219–22. http://dx.doi.org/10.22214/ijraset.2021.36034.

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In this study preparation of MgO nanoparticles using Zingiber officinale (ginger) aqueous root extract by using green method. The green synthesis approaches are recognized by many scientists due to its cost effective, simple, eco-friendly. The stability and reduction of Mg+2 ions to MgO nanoparticles were characterized by UV-Visible spectroscopic analysis. From UV-Visible spectroscopy, higher band gap energy of 7.8 eV is obtained in the near visible region at the wavelength of 300 nm. The Zingiber officinale (ginger) root extract act as reducing agent for stabilization of particle size as well

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15

Gautam, Chandkiram. "Synthesis, Structural and Optical Investigations of (Pb, Bi)TiO3 Borosilicate Glasses." Physics Research International 2014 (July 13, 2014): 1–7. http://dx.doi.org/10.1155/2014/606709.

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A new series of lead bismuth titanate borosilicate glasses with addition of one percent lanthanum oxide have been synthesized using melt-quench technique. X-ray diffraction patterns have been recorded to confirm the amorphous nature of the prepared glass samples. The synthesized glasses have been characterized by using various spectroscopic techniques such as UV-visible, infrared, and Raman spectroscopy. UV-visible measurements were recorded in the wavelength range from 200 to 1100 nm whereas IR and Raman spectroscopic measurements were recorded over a continuous wavenumber range from 400 to 5

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16

Kumari, Anuradha, and Parminderjit Kaur. "PRELIMINARY VALIDATION OF UV SPECTROPHOTOMETRIC FOR DETERMINATION OF ANTIEMETIC DRUG APREPITANT IN BULK FORM." International Research Journal of Pharmacy 11, no. 11 (2020): 49–53. http://dx.doi.org/10.7897/2230-8407.111197.

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Objective: The main objective of this work was to put forth the assorted strategies to develop and validate a novel, specific, precise and reliable method for estimation of aprepitant in bulk using UV-visible spectroscopy method. Method: The validation of Aprepitant was done by using UV-visible spectrophotometric method by using double beam systronics UV-visible spectrometer, model UV-2201 (India). The validation method involves various parameters like linearity, precision, accuracy, robustness, ruggedness, detection, quantification limits of formulation analysis according to International Con

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17

Ortac, Inanc, and Feride Severcan. "Spectroscopy of biological nanocrystals." Spectroscopy 21, no. 1 (2007): 31–41. http://dx.doi.org/10.1155/2007/129283.

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Nanocrystals have gained much interest in recent years, due to their unusual properties allowing interesting applications in physical and biological science. In this literature review, biological nanocrystals are discussed from the spectroscopic point of view. Firstly, the theory behind the outstanding abilities of the nanocrystals is described. Secondly, the spectroscopic properties of biological nanocrystals are mentioned. Lastly, the use of nanocrystals with various spectroscopic applications is reviewed such as biosensor applications with UV–visible and surface plasmon resonance and Raman

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18

Sujatmiko, Febrian, Imam Sahroni, Ganjar Fadillah, and Is Fatimah. "Visible light-responsive photocatalyst of SnO2/rGO prepared using Pometia pinnata leaf extract." Open Chemistry 19, no. 1 (2021): 174–83. http://dx.doi.org/10.1515/chem-2020-0117.

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Abstract The composite of tin oxide-reduced graphene oxide (SnO2/rGO) was prepared via a green synthesis of rGO using Pometia pinnata leaf extract followed by the dispersion of the SnO2 precursor. The composite was employed as a photocatalyst for the removal of methylene blue (MB) under UV and visible light. A variety of spectroscopic and analytical techniques, consisting of X-ray diffraction, Fourier-transform infrared, scanning transmission electron microscopy, photoluminescence spectroscopy, and a transmission electron microscope, was used to characterize the physical properties of the phot

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19

Hector, Andrew L., William Levason, Mark T. Weiler, and Eric G. Hope. "UV-visible spectroscopic studies of group 8–10 metal trifluorides." Journal of Fluorine Chemistry 84, no. 2 (1997): 161–65. http://dx.doi.org/10.1016/s0022-1139(97)00053-5.

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20

Reddy, S. Lakshmi, R. L. Frost, G. Sowjanya, N. C. G. Reddy, G. Siva Reddy, and B. J. Reddy. "EPR, UV-Visible, and Near-Infrared Spectroscopic Characterization of Dolomite." Advances in Condensed Matter Physics 2008 (2008): 1–8. http://dx.doi.org/10.1155/2008/175862.

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Dolomite mineral samples having white and light green colors of Indian origin have been characterized by EPR, optical, and NIR spectroscopy. The optical spectrum exhibits a number of electronic bands due to presence of Fe(III) ions in the mineral. From EPR studies, the parameters ofgfor Fe(III) andg,A, andDfor Mn(II) are evaluated and the data confirm that the ions are in distorted octahedron. Optical absorption studies reveal that Fe(III) is in distorted octahedron. The bands in NIR spectra are due to the overtones and combinations of water molecules. Thus EPR and optical absorption spectral

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21

Youn, Min Hye, Heesoo Kim, In Kyu Song, Katherine P. Barteau, and Mark A. Barteau. "UV-visible spectroscopic study of solid state 12-molybdophosphoricacid catalyst." Reaction Kinetics and Catalysis Letters 87, no. 1 (2005): 85–91. http://dx.doi.org/10.1007/s11144-006-0012-8.

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22

Savickienė, Viktorija, Aurimas Bieliauskas, Sergey Belyakov, Eglė Arbačiauskienė, and Algirdas Šačkus. "Multicomponent Synthesis of New Fluorescent Boron Complexes Derived from 3-Hydroxy-1-phenyl-1H-pyrazole-4-carbaldehyde." Molecules 29, no. 14 (2024): 3432. http://dx.doi.org/10.3390/molecules29143432.

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Novel fluorescent pyrazole-containing boron (III) complexes were synthesized employing a one-pot three-component reaction of 3-hydroxy-1-phenyl-1H-pyrazole-4-carbaldehyde, 2-aminobenzenecarboxylic acids, and boronic acids. The structures of the novel heterocyclic compounds were confirmed using 1H-, 13C-, 15N-, 19F-, and 11B-NMR, IR spectroscopy, HRMS, and single-crystal X-ray diffraction data. The photophysical properties of the obtained iminoboronates were investigated using spectroscopic techniques, such as UV–vis and fluorescence spectroscopies. Compounds display main UV–vis absorption maxi

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23

Solanki, G. K., I. L. Chauhan, and K. D. Patel. "Study of structural, electrical, and optical properties of nickel-doped tin selenide crystals." Canadian Journal of Physics 94, no. 2 (2016): 212–17. http://dx.doi.org/10.1139/cjp-2015-0279.

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Nickel-doped tin selenide crystals can be grown using the direct vapour transport technique. This paper includes structural, electrical, and optical characterizations of SnSeNi0.2 crystals done by X-ray diffraction (XRD), energy-dispersive analysis of X-rays (EDAX), surface microstructure topography, Hall effect measurement carried out to determine type of material, Seebeck coefficient and calculation of power factor has been carried out from the data of thermoelectric power measurements and the ultraviolet–visible (UV-Vis) spectroscopic technique, respectively. The optical absorption spectrum

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24

Setiawan, Ely, Trisnowati Trisnowati, and Dadan Hermawan. "SINTESIS NATRIUM PENTAGAMAVUNONAT DAN UJI STABILITASNYA MENGGUNAKAN SPEKTROFOTOMETER UV-Visible." Molekul 1, no. 1 (2006): 24. http://dx.doi.org/10.20884/1.jm.2006.1.1.19.

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A research on the synthesis of sodium pentagamavunonat (Na-PGV-0) and its stability test using UV-Visible spectrophotometer were carried out. The synthesis of Na-PGV-0 carried out by reacting PGV-0 in tetrahydrofuran solvent refluxed with sodium ethoxide in mol comparison (1:2) for two hours. Structure elucidation by spectroscopic methods using UV-Visible, IR, 1H-NMR, 13C-NMR and stability test in water using UV-Visible spectrophotometer. The reaction yields 107,21 % (% w/w) products. A products was soluble in water and methanol. Structure elucidation results indicated that the formed compound

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25

Kalita, Rinki Moni, Rahul Sarma Baruah, and Chitrani Medhi. "Synthesis, Crystal Structure, Spectroscopic and Antimicrobial Properties of Ruthenium Complexes of Vinyl Imidazole and 4-Ethylaminomethyl Pyridine Ligands." Asian Journal of Chemistry 33, no. 4 (2021): 859–66. http://dx.doi.org/10.14233/ajchem.2021.23099.

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Ruthenium complexes of vinylimidazole (VIMD) and 4-ethylaminomethyl pyridine (EMP) ligands were synthesized and characterized by XRD and spectroscopic methods. The binding of these Ru(IIII) complexes with calf thymus-DNA has been studied by UV-visible spectroscopic and electrochemical studies. A prominent increase in the intensity of fluorescence spectra of these complexes with CT-DNA was observed and a distinct UV-visible spectral shift in presence of CT-DNA is probably due to an interaction of these complexes with CT-DNA. The evidence of DNA binding has been found from the change in the inte

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26

Umapathy, Chokkanathan, and Geetha Kannappan. "SYNTHESIS, CHARACTERIZATION AND BIOLOGICAL APPLICATIONS OF A MULTIDENTATE LIGAND AND ITS COPPER (II) COMPLEXES." International Journal of Applied and Advanced Scientific Research 1, no. 2 (2017): 146–51. https://doi.org/10.5281/zenodo.322713.

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A multidentate ligand was synthesized using 4-bromo-2,6-bis(hydroxymethyl)phenol and diethylenetriamine. It was characterized by UV-Visible, FT-IR, <sup>1</sup>H-NMR, <sup>13</sup>C-NMR and mass spectroscopic techniques. The above ligand was coordinated with various copper precursors to form corresponding copper(II)complexes. The complexes were characterized by UV-Visible, FT-IR, Conductivity measurements and Cyclic Voltammetry. The biological applications of the ligand and their complexes were studied.

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Patel, Sachin, Manish Patel, and Ranjan Patel. "Synthesis and characterization of heterocyclic substituted fluoran compounds." Journal of the Serbian Chemical Society 72, no. 11 (2007): 1039–44. http://dx.doi.org/10.2298/jsc0711039p.

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New quinazolinone-substituted fluoran compounds were synthesized by reaction of keto acid, 2?-carboxy-2-hydroxy-4-N-pyrrolidinylbenzophenone with different quinazolinone derivatives in the presence of conc. sulphuric acid. All the synthesized fluoran compounds were characterized by spectroscopic methods (IR, 1H-NMR and UV-visible spectroscopy) and elemental analysis. The fluoran compounds are colorless or nearly colorless and develop color on contact with electron-accepting compounds.

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28

John, Peter Paul J. "SCREENING OF PHYTOCHEMICALS OF BLECHNUM ORIENTALE L. COLLECTED FROM KOTHIYAR, KANYAKUMARI DISTRICT, TAMIL NADU, INDIA." INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES 05, no. 03 (2018): 1671–74. https://doi.org/10.5281/zenodo.1208668.

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The aim of the present study was to screen the phytochemicals in the methanolic extract of Blechnum orientale L. collected from Kothiyar, located in Kanyakumari district, Tamil Nadu, India. The phytochemical screening of methanolic extract was analyzed using the standard procedure using UV-Visible spectroscopic and FTIR. The UVVisible spectrum was found to have the presence of the compounds separated at the nm of 536, 606, 662, 718, 741.5, 783.5, 797.5, 820.5 and 890.5 of with the absorption of 0.822, 0.675, 1.499, 0.317, 0.304, 0.276, 0.275, 0.268 and 0.265 respectively. The FTIR analysis sho

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29

Chenier, J. H. B., J. A. Howard, H. A. Joly, B. Mile, and M. Tomietto. "A spectroscopic study of the reaction of gold atoms with CO in a rotating cryostat: formation of a variety of gold carbonyls." Canadian Journal of Chemistry 67, no. 4 (1989): 655–61. http://dx.doi.org/10.1139/v89-099.

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Reaction of 197Au atoms with CO has been studied in inert hydrocarbon matrices in a rotating cryostat at 77 K by EPR, FTIR, and UV/visible spectroscopy. Au(CO)2 has been positively identified by FTIR spectroscopy and there is evidence for the formation of AuCO, a gold microcrystallite – CO complex and, upon annealing, Au2(CO)4. Electron paramagnetic resonance spectra are consistent with the formation of Au(CO) (OC) with the magnetic parameters: a13 = 325 MHz, a17 = 44 MHz, and g = 2.0014 and a gold microcrystallite – CO complex with g = 2.014. An intense broad absorption in the optical spectru

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30

Issa, Dhamiaa Abdul-Shaheed, Hayder Baqer Abdullah та Faeza Abdulkareem Al-Mashal. "Synthesis and Biological Activity Study of Co and Cr Complexes with α-(2-Salsayl)-<i>N</i>-phenyl Nitrone and Oxide Nanoparticles". Indonesian Journal of Chemistry 23, № 2 (2023): 341. http://dx.doi.org/10.22146/ijc.77276.

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This paper describes the synthesis of two complexes from the ligand α-(2-Salsayl)-N-phenyl nitrone with CoCl2 and CrCl2. The ligand was characterized by several spectroscopic techniques (ultraviolet/visible (UV/Vis), nuclear magnetic resonance (1H-NMR and 13C-NMR), Fourier-transform infrared spectroscopy (FTIR), and mass spectrometry (MS). While infrared, ultraviolet-visible (UV-Vis), thermal analysis, and job method studies were used to reveal the structure of the complexes. The synthesized complexes were then synthesized by the sonochemical method, and the copper and chromium oxide nanoparti

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31

Arham, Zul, Kurniawan Kurniawan, Laode Anhusadar, and Ismaun Ismaun. "Spectroscopic Analysis of Tempeh Protein Content during the Production Process." International Journal of Transdisciplinary Knowledge 2, no. 1 (2021): 51–62. http://dx.doi.org/10.31332/ijtk.v2i1.17.

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Tempeh is a local Indonesian food that is liked by the community, both locally and internationally. The high protein content is the reason for choosing tempeh as a complementary food. In its production, tempeh is made by two important processes, including treatment and fermentation. During this process, the protein can be damaged, resulting in a decrease in the protein content of tempeh. Based on these problems, this study aims to analyze the reduction of tempeh protein content during the production process. The analysis used two spectroscopic methods, including FTIR and UV-Visible. FTIR spect

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Kumar HB, Chethan, Bhaskar Kurangi, Moazzim Soudagar, Supriya Chimagave, and Swapnil Patil. "Development and Validation of UV-Spectrophotometric Method for Estimation of Vinpocetine in Marketed Formulation and Nanoformulation." International Journal of Ayurvedic Medicine 14, no. 3 (2023): 717–23. http://dx.doi.org/10.47552/ijam.v14i3.3585.

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A quick, accurate, and cost-effective UV spectroscopy method was developed to estimate the Vinpocetine concentration in bulk, tablet dosage formulations and niosomes formulations, using a solvent ratio of (6:4) methanol: water. According to ICH guidelines, the proposed technique was validated and developed. In spite of linearity, precision, accuracy, specificity, LOD, and LOQ, like parameters were validated by using UV/visible spectroscopy technique to analyze a spiked Vinpocetine solution. The wavelength at which the drug's maximum absorbance peak was obtained at 274 nm and the solvents used

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33

Kaczmarek, Katarzyna, Andrzej Leniart, Barbara Lapinska, Slawomira Skrzypek, and Monika Lukomska-Szymanska. "Selected Spectroscopic Techniques for Surface Analysis of Dental Materials: A Narrative Review." Materials 14, no. 10 (2021): 2624. http://dx.doi.org/10.3390/ma14102624.

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The presented work focuses on the application of spectroscopic methods, such as Infrared Spectroscopy (IR), Fourier Transform Infrared Spectroscopy (FT-IR), Raman spectroscopy, Ultraviolet and Visible Spectroscopy (UV-Vis), X-ray spectroscopy, and Mass Spectrometry (MS), which are widely employed in the investigation of the surface properties of dental materials. Examples of the research of materials used as tooth fillings, surface preparation in dental prosthetics, cavity preparation methods and fractographic studies of dental implants are also presented. The cited studies show that the above

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34

Gogoi, Rajjyoti, Chandan Pathak, and Geetika Borah. "Synthesis and Characterization of Cobalt(II) Complexes with Hemilabile P^N Donor Ligands." Asian Journal of Chemistry 31, no. 3 (2019): 566–68. http://dx.doi.org/10.14233/ajchem.2019.21685.

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Two cobalt(II) complexes viz. CoCl2{PPh2(p-C6H4NMe2)}2 (C1) and CoCl2(PPh2Py)2 (C2) were synthesized by reacting CoCl2·6H2O and 4-(dimethylamino)phenyldiphenylphosphine and diphenyl-2-pyridylphosphine ligands, respectively. The complexes were characterized by elemental analysis, FT-IR, UV-visible and electronic spin resonance (ESR) spectroscopic technique. Both the complexes were found stable at room temperature. EPR measurements and UV-visible spectra analysis of C1 and C2 are consistent with a tetrahedral Co(II) and tetragonally distorted octahedral Co(II) ions, respectively.

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35

Ou, Zhongping, Xueyan Chen, Lina Ye, et al. "N-confusedmeso-tetraaryl-substituted free-base porphyrins: determination of protonation and deprotonation constants in nonaqueous media." Journal of Porphyrins and Phthalocyanines 19, no. 01-03 (2015): 251–60. http://dx.doi.org/10.1142/s1088424614501132.

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The protonation and deprotonation reactions for a series N-confused meso-tetraaryl-substituted free-base porphyrins containing electron-donating or electron-withdrawing substituents was monitored in CHCl3and DMF by UV-visible spectroscopy during titrations with trifluoroacetic acid or tetra-n-butylammonium hydroxide. The spectroscopic data was also used to calculate equilibrium constants for these reactions. The examined compounds are represented as (XPh)4NCPH2, where "NCP" represents the N-confused porphyrin π-conjugated macrocycle and X is a CH3O , CH3, H or Cl para-substituent on the four m

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36

Mallappa, Mahanthappa, Mohammed Azharuddin Savanur, Babu Giriya Gowda, R. S. Vishwanth, and Bijesh Puthusseri. "Molecular Interaction of Hemorrheologic Agent, Pentoxifylline with Bovine Serum Albumin: An Approach to Investigate the Drug Protein Interaction Using multispectroscopic, Voltammetry and Molecular Modelling Techniques." Zeitschrift für Physikalische Chemie 233, no. 7 (2019): 973–94. http://dx.doi.org/10.1515/zpch-2018-0002.

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Abstract The interaction between pentoxifylline (PTX) and bovine serum albumin (BSA) was studied under physiological condition by spectroscopic, voltammetry and molecular modelling techniques. The results of fluorescence studies revealed that the quenching mechanism of BSA by PTX was a static procedure. Binding constant of PTX-BSA was calculated and its value found to be 8.895 × 104 M−1, which is in close agreement with the results obtained from UV-Visible and voltammetry approach. The negative values of thermodynamic parameters (ΔG, ΔH and ΔS) indicated that van der Waals force and hydrogen b

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Selvamani, S.* Justus Antony. S. Manoharan. "UV-Visible Spectroscopic And FTIR Analysis of Aanai Nerunjil Kudineer - A Siddha Herbal Drug." INTERNATIONAL JOURNAL IN PHARMACEUTICAL SCIENCES 1, no. 9 (2023): 51–54. https://doi.org/10.5281/zenodo.8321528.

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The Siddha system of medicine is an indigineous system of medicine which belongs to south India. It has a plethora of medications mentioned for numerous diseases. Aim: The present study is the UV-Vis spectroscopic and FTIR analysis of alcoholic extract of Aanai Nerunjil Kudineer, which is a herbal drug indicated for the management of kalladaippu (Urolithiasis) in the textbook Gunapadam mooligai (Pg. no:597).Materials and methods: Aanai Nerunjil (Pedalium murex)plants and Seeds of  Kothumalli (Coriandrum  sativum)were collected from the locality of Tuticorin, Tamilnadu  and 

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Shi, Maohu, Jingzhi Chen, and Zhen Shen. "Synthesis and spectroscopic properties of photochromic dithienylethene-functionalized subphthalocyanine conjugate." Journal of Porphyrins and Phthalocyanines 20, no. 08n11 (2016): 1082–89. http://dx.doi.org/10.1142/s108842461650067x.

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A subphthalocyanine-dithienylethene dyad has been synthesized and characterized by 1H-, [Formula: see text]C-NMR, HR-MS, UV-visible and emission spectroscopy. The results show that photoinduced isomerization of dithienylethene moiety from close-form to opened form can be achieved under visible light using subphthalocyanine as a light-harvesting unit and the fluorescence properties of subphthalocyanine could be modulated by the isomerization state of the dithienylethene moiety.

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Oza, A. T. "Spectroscopic theory for organic and organometallic conductors." Canadian Journal of Physics 80, no. 10 (2002): 1175–84. http://dx.doi.org/10.1139/p02-062.

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Here the Gaussian distributions obtained in the UVvisible and infrared spectra of inclusion compounds and charge-transfer complexes are derived theoretically. In some organometallic conductors, log α (where α is the absorption coefficient) is normally distributed. This result and the Gaussian centre-split in a compound are explained theoretically. PACS No.: 72.80Le

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Ghosh, Amrita, T. Selvamani, D. Amilan Jose, Amitava Das, and I. Mukhopadhyay. "Generation of Nanostructures by the Aggregation of Porphyrin Derivatives with Long Alkane Chain in Mix-Solvent." Journal of Nanomaterials 2007 (2007): 1–8. http://dx.doi.org/10.1155/2007/47234.

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Controlled aggregation of tetrakis-(4-(hexadecyl oxy)-phenyl) porphyrin and its copper(II)-complex was studied in mix-solvent system at room temperature. Structure of the aggregates was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (XRD), and UV-visible spectroscopy. TEM results indicated the formation of organized nanostructures from the porphyrin derivative and its corresponding copper(II)-complex. XRD results showed that the bulk and nanostructured free porphyrin derivatives had the similar crystalline morphology. UV-vi

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Usha, C., M. Sivaraju, and P. Shanmugasundaram. "Synthesis and Characterization of Cresol based Benzoxazine–Polyurethane Copolymer for Anti-corrosion Performance of Mild Steel." Asian Journal of Chemistry 35, no. 11 (2023): 2708–14. http://dx.doi.org/10.14233/ajchem.2023.30245.

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The cresol based polymeric materials were synthesized by using benzoxazine and polyurethanes as copolymer. Three copolymers were synthesized by varying the quantity of polyurethane content and studied their corrosion inhibition properties. The synthesized monomer, which has cresol as the center core was characterized by the NMR, FT-IR and UV-visible spectroscopic methods. All the obtained benzoxazine polymers were also analyzed by the FT-IR and UV-visible spectroscopy. In relation to corrosion inhibition studies, Tafel and impedance experiments were conducted, revealing that benzoxazine-polyme

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Pons, M. N., O. Potier, S. Pontvianne, N. Laurent, X. France, and P. Battaglia. "Spectrophotometric characterization of human impacted surface waters in the Moselle watershed." Water Science and Technology 64, no. 3 (2011): 602–9. http://dx.doi.org/10.2166/wst.2011.071.

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In order to characterize the pollution discharged into the Moselle River and some of its tributaries, spectroscopic techniques, namely UV–vis spectroscopy and synchronous fluorescence spectroscopy, have been combined. UV–visible spectra were analysed using the maximum of the second derivative at 225 nm (related to nitrates), the SUVA254 and E2/E3 indices (related to the nature of organic matter). Synchronous fluorescence spectra (Δλ = 50 nm) presented different shapes depending upon the type of pollution. The pollution results from anthropogenic activities: untreated domestic sewage due to mis

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Shahabadi, Nahid, and Maryam Mahdavi. "DNA Interaction Studies of a Cobalt(II) Mixed-Ligand Complex Containing Two Intercalating Ligands: 4,7-Dimethyl-1, 10-Phenanthroline and Dipyrido[3,2-a:2′,3′-c]phenazine." ISRN Inorganic Chemistry 2013 (December 30, 2013): 1–7. http://dx.doi.org/10.1155/2013/604218.

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A new cobalt(II) complex [Co(dppz)2(4,7-dmp)]2+ (4,7-dmp = 4,7-dimethyl-1,10-phenanthrolline) and dppz = dipyrido[3,2-a:2′-3′-c]phenazine has been synthesized and characterized by elemental analysis (CHN), FT-IR, and UV-visible (UV-Vis) spectroscopic techniques. The DNA-binding property of the complex has been investigated employing absorption spectroscopy, fluorescence spectroscopy, circular dichroism, and viscosity measurements. The experimental results show that the complex can bind to DNA in an intercalation mode. In comparison with previous study, the DNA-binding affinity of [Co(dppz)2(4,

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H. Ali, Nashwan, Maadh T. Abdulrahman, Seemaa H. Ahmed, et al. "SYNTHESIS OF THE NOVEL COUMARIN PROBES AND SENSITIVE DETECTION AND SEPARATION OF CATIONS USING RP-LC AND THEORETICAL INVESTIGATIONS." RASAYAN Journal of Chemistry 18, no. 02 (2025): 715–22. https://doi.org/10.31788/rjc.2025.1829191.

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Three new UV-visible probes have been synthesized under a Schiff-based reaction by derivatizing the coumarin molecule for sensitive detection of metal ions. All the probes were characterized using different spectroscopic methods. The probes demonstrated exceptional UV-visible absorption properties, with their λmaxes at 308, 318, and 345 nm. The probes showed high UV-visible sensitivity for metal ions, particularly Zn2+, Al3+, Fe3+, Mn2+, and Co2+ ions. The ability of the probes was investigated by testing different concentration samples at the nanomolar scale. The effect of various functional

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Nandi, Tapan, V. Nanal, W. A. Fernandes, et al. "Instrumentation for beam-foil spectroscopic studies in the UV-visible region." Pramana 44, no. 1 (1995): 67–76. http://dx.doi.org/10.1007/bf02898213.

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Rajendraprasad, N., and K. Basavaiah. "UV/Visible Spectroscopic Quantification of Veterinary Anthelmintic Drug Oxfendazole in Pharmaceuticals." Journal of Applied Spectroscopy 83, no. 3 (2016): 392–97. http://dx.doi.org/10.1007/s10812-016-0300-7.

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Fujita, Iwao, Mitsuharu Ishiguchi, Hiroshi Shiota, Takeshi Danjō, and Kouichi Kosai. "Spectroscopic study of polytoluidines in the UV-visible and IR regions." Journal of Applied Polymer Science 44, no. 6 (1992): 987–92. http://dx.doi.org/10.1002/app.1992.070440607.

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Inoue, Hidenari. "SPECTROSCOPIC AND PHYSICOCHEMICAL METHODS FOR STUDYING THE INTERACTION OF METALLOPORPHYRIN WITH DNA." Indonesian Journal of Chemistry 2, no. 3 (2010): 131–34. http://dx.doi.org/10.22146/ijc.21907.

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In recent years studies on the interaction of porphyrin with DNA have received much attention because of the importance in DNA-probing and photodynamic therapy of cancer. A variety of spectroscopic methods, e.g. NMR, ESR, Mössbauer, UV-visible absorption, circular dichroism (CD), magnetic circular dichroism (MCD), IR and Raman spectroscopy, have been employed for studying interactions between porphyrin and DNA. Of these spectroscopic methods, only a few instrumental analytical techniques applicable to an aqueous buffer solution of DNA have been particularly developed to investigate porphyrin-D

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Sankar, Prasad Parua, Chakraborty Sumit, Sau Kalipada, and Saha Indrajit. "Coumarin-based fluorescent chemodosimeter for selective sensing of hydrazine in semi-aqueous medium." Journal of Indian Chemical Society Vol. 96, Mar 2019 (2019): 395–400. https://doi.org/10.5281/zenodo.5651028.

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Department of Chemistry, Jadavpur University, Jadavpur, Kolkata-700 032, India Department of Chemistry, Ramakrishna Mission Residential College, Narendrapur, Kolkata-700 103, India <em>E-mail</em>: indra_ku@yahoo.co.in <em>Manuscript received online 21 September 2018, revised 07 February 2019, accepted 08 February 2019</em> A chemodosimeter based on 2,3,5,6-tetrafluoro benzoyl ester of 7-hydroxy-4-(trifluoromethyl)coumarin has been designed and synthesized for selective detection of hydrazine in semi-aqueous medium. The structure of the probe was confirmed by conventional spectroscopic techniq

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Kumar, Anand, Ali Vazid, and Sushil Kumar. "Spectroscopic and Electrical Studies of Ferrous Sulphate Doped Polyaniline." Advanced Materials Research 585 (November 2012): 224–27. http://dx.doi.org/10.4028/www.scientific.net/amr.585.224.

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Polyaniline (PANI) has been synthesized by chemical oxidative polymerization technique with potassium dichromate oxidant in aqueous hydrochloric acid medium. After polymerization, the polymer so prepared is doped with ferrous sulphate, a transition metal salt, with tetrahydrofuran and water as solvents. The undoped/doped samples were characterized by various techniques such as UV-visible spectroscopy, FTIR spectroscopy, X-ray diffraction and dc conductivity measurements. UV-visible absorption studies revealed the presence of cation/polaron transitions and the presence of direct optical transit

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