Log in

Relevant bibliographies by topics / Bi-Molecular complexes / Journal articles

To see the other types of publications on this topic, follow the link: Bi-Molecular complexes.

Journal articles on the topic 'Bi-Molecular complexes'

Author: Grafiati

Published: 22 June 2024

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Bi-Molecular complexes.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Jäger, Martin, Paul Schuler, Hartmut B. Stegmann, and Antal Rockenbauer. "Molecular Recognition Analyzed by Observing Intramolecular Interconversion with EPR Spectroscopy." Zeitschrift für Naturforschung B 53, no. 12 (1998): 1511–19. http://dx.doi.org/10.1515/znb-1998-1215.

Full text

Abstract:

Abstract Molecular recognition between Rebek’s cleft R and 4-(2-benzimidazolyl)-aminomethyl-2,6-di-rm-butyl-phenol (Bi) is investigated by means of EPR spectroscopy. Their specific inter-molecular interactions are distinguished from non-specific interactions represented by mere protonation on addition of benzoic acid. Both interactions are related to intramolecular in terconversions at the C∞-atom of Bi*, where a two-jump mechanism is found for free and protonated Bi* and a two-site exchange for the complexed ligand. While NMR spectroscopy indicates the existence of 1:1 and 1:2 receptor-subst

APA, Harvard, Vancouver, ISO, and other styles

2

Vicente, Ramon, Ànnia Tubau, Saskia Speed, et al. "Slow magnetic relaxation and luminescence properties in neodymium(iii)-4,4,4-trifluoro-1-(2-naphthyl)butane-1,3-dionato complexes incorporating bipyridyl ligands." New Journal of Chemistry 45, no. 32 (2021): 14713–23. http://dx.doi.org/10.1039/d1nj02583j.

Full text

Abstract:

A new series of eight-coordinated Nd(iii) complexes derived from 4,4,4-trifluoro-1-(naphthalen-2-yl)butane-1,3-dionate and bi-pyridyl ligands revealed multifunctional molecular materials as photoluminescent single-molecule magnets (SMMs).

APA, Harvard, Vancouver, ISO, and other styles

3

Priyadarshini, N., M. Sampath, Shekhar Kumar, and U. Kamachi Mudali. "Particle Size Variation and Prediction of Molecular Weight of Bi(III) Hydrolyzed Polymer Using Light Scattering Technique." ISRN Inorganic Chemistry 2013 (February 12, 2013): 1–5. http://dx.doi.org/10.1155/2013/194120.

Full text

Abstract:

The present paper gives an overview of the hydrolysis reactions up to colloid formation of Bi(III) in aqueous nitric acid medium using light-scattering measurements. The hydrolysis products of Bi were polynuclear complexes such as dimers, pentamers, and the most important is the hexameric species. In the present investigation Bi3+ polymers were prepared by diluting different concentrations of Bi(NO3)3·5H2O solutions to pH 1 ± 0.1 by adding 0.1 M NaOH solution as it starts to precipitates at pH 1.4. The degree of polymerization was found to be 5-6 units. Particle size measurements were performe

APA, Harvard, Vancouver, ISO, and other styles

4

Younes, Ayman A. O. "Synthesis, biological evaluation and molecular docking studies of novel mixed-ligand Schiff base/8-hydroxyquinoline metal complexes." Materials Express 13, no. 12 (2023): 2110–27. http://dx.doi.org/10.1166/mex.2023.2564.

Full text

Abstract:

Five manufactured mixed ligands chelate of Schiff base (HL) in the presence of 8-hydroxyquinoline (HQ) with Chromium(III), Cobalt(II), Silver(I) tin(II), and mercury(II) was produced and described. The molecular structure of complexes was examined using physicochemical analysis, thermogravimetric analysis, and spectroscopic methods. Measurements of morphological properties confirm the nano-crystalline particles of the fabricated chelates. FT-IR analysis revealed that HL and HQ chelated with metal ions as NO bi-dentate ligands. The synthesized complexes have distorted octahedral (Cr(III) and Co

APA, Harvard, Vancouver, ISO, and other styles

5

EMANDI, Anca. "Synthesis and Characterization of New Oxovanadium(IV) Coordination Compounds with Pyrazol-5-one Azo Derivatives." SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 6, no. 7 (1998): 91–99. http://dx.doi.org/10.48141/sbjchem.v6.n7.1998.90_1998_2.pdf.

Full text

Abstract:

A new series of oxovanadium(IV) chelates containing bi-and tridentate pyrazol-5-one azo derivatives ligands of the type (I) [VO(L)2] and (2) [VO(L)(H2O)] have been prepared and characterized by elementary analysis, IR, electronic spectra, conductance measurements, and molecular weights. The ligands coordinate through (O-N) donor system as monobasic and bidentate (HL) for the first type and through (0-N-O) donor system as dibasic and tridentate (H2L) for the second type of complexes. The molecular weights, the presence of the (V=O) stretching band around 950 cm -1, and the visible spectra sugge

APA, Harvard, Vancouver, ISO, and other styles

6

M. Abd El-Lateef, Hany, Ali M. Ali, Mai M. Khalaf, and Aly Abdou. "New iron(III), cobalt(II), nickel(II), copper(II), zinc(II) mixed-ligand complexes: Synthesis, structural, DFT, molecular docking and antimicrobial analysis." Bulletin of the Chemical Society of Ethiopia 38, no. 1 (2023): 147–66. http://dx.doi.org/10.4314/bcse.v38i1.12.

Full text

Abstract:

The present framework has as its goal the design and synthesis and characterization of new mononuclear 1:1:1 (M:L:Q) mixed-ligand complexes, including FeLQ, CoLQ, NiLQ, CuLQ, and ZnLQ. The "L," is the 4-[(4-oxo-4,5-dihydro-1,3-thiazol-2-yl)hydrazono]methylphenyl 4-methylbenzenesulfonate, while the "Q," is the 8-hydroxy quinoline. According to the findings, L and Q ligands each play the role of a neutral bi-dentate NN and a monobasic bi-dentate ON ligand, respectively. The findings demonstrated an octahedral shape. The density functional theory (DFT) technique was employed, and the quantum chem

APA, Harvard, Vancouver, ISO, and other styles

7

Marfo-owusu, Emmanuel, Keiichi Noguchi, and Kenji Okuyama. "The Molecular Complexes of Monoalkylammonium Bromide Salts with (R)-(+)-1,1′-Bi-2-Naphthol and Rac-1,1′-Bi-2-Naphthol." Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 338, no. 1 (2000): 47–59. http://dx.doi.org/10.1080/10587250008024419.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Heshmatpour, Constantin, Jürgen Hauer, and František Šanda. "Correlated spectral fluctuations quantified by line shape analysis of fifth-order two-dimensional electronic spectra." Journal of Chemical Physics 156, no. 8 (2022): 084114. http://dx.doi.org/10.1063/5.0081053.

Full text

Abstract:

Correlated spectral fluctuations were suggested to coordinate excitation transport inside natural light harvesting complexes. We demonstrate the capacities of 2D line shapes from fifth-order coherent electronic signals (R5-2D) to report on such fluctuations in molecular aggregates and present a stochastic approach to fluctuations in correlated site and bi-exciton binding energies in the optical dynamics of Frenkel excitons. The model is applied to R5-2D line shapes of a homodimer, and we show that the peak tilt dynamics are a measure for site energy disorder, inter-site correlation, and the st

APA, Harvard, Vancouver, ISO, and other styles

9

Lu, Xiao-Qin, Qiang Chen, Xin-Xin Tian, Yue-Wen Mu, Hai-Gang Lu, and Si-Dian Li. "Predicting lanthanide boride inverse sandwich tubular molecular rotors with the smallest core–shell structure." Nanoscale 11, no. 44 (2019): 21311–16. http://dx.doi.org/10.1039/c9nr07284e.

Full text

Abstract:

Extensive first-principles theory calculations predict the possibility of bi-decker inverse sandwich complexes La<sub>2</sub>[B<sub>18</sub>], La<sub>2</sub>[B<sub>18</sub>]<sup>2−</sup>, and La<sub>2</sub>[B<sub>2</sub>@B<sub>18</sub>], with the B<sub>2</sub>-centered La<sub>2</sub>[B<sub>2</sub>@B<sub>18</sub>] as a tubular molecular rotor possessing the smallest core–shell structure.

APA, Harvard, Vancouver, ISO, and other styles

10

Notter, Silke, Carsten Donsbach, and Claus Feldmann. "On iodido bismuthates, bismuth complexes and polyiodides with bismuth in the system BiI₃/18-crown-6/I₂." Zeitschrift für Naturforschung B 76, no. 10-12 (2021): 765–74. http://dx.doi.org/10.1515/znb-2021-0127.

Full text

Abstract:

Abstract The iodido bismuthates [Bi(18-crown-6)I2][BiI4] (1) and [Bi(18-crown-6)I2][Bi3I10] (2), the neutral complex [Bi(C6H14O4)I3](18-crown-6) (3) as well as the polyiodides [Bi(18-crown-6)I2][I5](18-crown-6) (4), [Bi(18-crown-6)I2]2[I14] (5) and [Bi(18-crown-6)I2]2[I19] (6) were prepared by reaction of BiI3, 18-crown-6, and I2 at T = 60–120 °C. The compounds 1–5 were prepared in [n-Bu3MeN][N(Tf)2] as an ionic liquid ([n-Bu3MeN]: tributylmethylammonium, [N(Tf)2]: bis(trifluoromethylsulfonyl)imide), whereas 6 was obtained only by direct reaction of the starting materials. The title compounds

APA, Harvard, Vancouver, ISO, and other styles

11

Virnal, K. Jain. "Chemistry of molecular precursors for compound semiconductor nanoparticles." Journal of Indian Chemical Society Vol. 85, Jan 2008 (2008): 123–29. https://doi.org/10.5281/zenodo.5808629.

Full text

Abstract:

Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India E-mail : jainvk@barc.gov .in <em>Manuscript received 14 November 2007, accepted 14 November 2007</em> This lecture intends to present recent results on design and development of molecular precursors for the synthesis of some binary and ternary compound semiconductor nanoparticles. A wide variety of complexes of Group II, III, IV and V elements with dithiocarboxylate, xanthate, dithiocarbamate, selenocarboxylate and <em>N</em>, <em>N</em>-dimethylaminoalkylchalcogenolates have been prepared and characterized by spectroscop

APA, Harvard, Vancouver, ISO, and other styles

12

Nasser, Adnan Taleb, and Rafid Al-Asadi. "Schiff Bases Ligands Derived from o-Phthalaldehyde and Their Metal Complexes with Cu2+ and Ni2+: Synthesis, Anti-Breast Cancer and Molecular Docking Study." Trends in Sciences 20, no. 9 (2023): 5675. http://dx.doi.org/10.48048/tis.2023.5675.

Full text

Abstract:

The Schiff bases and their complexes have an observed biological efficacy, so in the current study it has been prepared, characterized and evaluated the biological activity of some Schiff bases and their metal complexes with copper and nickel and based on ortho-phathaldehyde as a primary compound. A new Schiff bases ligands and metal complexes {[Cu(L)n(H2O)2]Cl2.mH2O and [Ni(L)n].mH2O, where L=N',N'''-((1E,1'E)-1,2-phenylenebis(methanylylidene)) di(benzohydrazide) L1, N',N'''-((1E,1'E)-1,2-phenylenebis (methanylylidene)) di(isonicotinohydrazide) L2, 1,2-bis((E)-(2-(2,4,6-trichlorophenyl)hydraz

APA, Harvard, Vancouver, ISO, and other styles

13

Klokishner, Sophia, Serghei Ostrovsky, Andrew Palii, and Boris Tsukerblat. "Cooperative Spin Transitions Triggered by Phonons in Metal Complexes Coupled to Molecular Vibrations." Magnetochemistry 8, no. 2 (2022): 24. http://dx.doi.org/10.3390/magnetochemistry8020024.

Full text

Abstract:

The present article is a short overview of the theoretical modeling of spin transitions in polymetallic compounds. As distinguished from many insightful reviews on this topic, the present work is focused on the nature of cooperative interaction of the metal clusters in molecular crystals with emphasis at the physical role of molecular vibrations and phonons. The underlying model assumes that the cooperativity is triggered by phonons while the metal centers are coupled to molecular vibrations. It is demonstrated that the suggested model gives a satisfactory description of the observed spin tran

APA, Harvard, Vancouver, ISO, and other styles

14

Derafa, Wassila, Nadia A.A. Elkanzi, Ali M. Ali, and Aly Abdou. "Three Co(II), Ni(II) and Cu(II) Schiff base complexes incorporating 2-[(4-{[(4-methylphenyl)sulfonothioyl]oxy}phenyl)methylene] amino}benzoic acid: Synthesis, structural, dft, biological and molecular docking investigation." Bulletin of the Chemical Society of Ethiopia 38, no. 2 (2024): 325–46. http://dx.doi.org/10.4314/bcse.v38i2.5.

Full text

Abstract:

New 2-[(4-[(4-methylphenyl)sulfonothioyl)methylene]aminobenzoic acid ligand-Co(II), Ni(II), and Cu(II) complexes are synthesized and characterized in this article. Elemental analysis, mass spectroscopy, conductivity tests, magnetic susceptibility, Fourier transform infrared spectroscopy, thermogravimetric analysis, electronic absorption spectroscopy, and density functional theory calculations were used to determine the coordination mode, and geometry of the synthesized compounds. The Schiff-base ligand was shown to be mono-negatively charged and coordinate to metal ions in a bi-dentate mode th

APA, Harvard, Vancouver, ISO, and other styles

15

Luo, Yani, Jian Li, Derong Luo, et al. "Methylene-Bridged Tridentate Salicylaldiminato Binuclear Titanium Complexes as Copolymerization Catalysts for the Preparation of LLDPE through [Fe]/[Ti] Tandem Catalysis." Polymers 11, no. 7 (2019): 1114. http://dx.doi.org/10.3390/polym11071114.

Full text

Abstract:

A novel tandem catalysis system consisted of salicylaldiminato binuclear/mononuclear titanium and 2,6-bis(imino)pyridyl iron complexes was developed to catalyze ethylene in-situ copolymerization. Linear low-density polyethylene (LLDPE) with varying molecular weight and branching degree was successfully prepared with ethylene as the sole monomer feed. The polymerization conditions, including the reaction temperature, the Fi/Ti molar ratio, and the structures of bi- or mononuclear Ti complexes were found to greatly influence the catalytic performances and the properties of obtained polymers. The

APA, Harvard, Vancouver, ISO, and other styles

16

Kovalchukova, Olga V., Al Tahan Rana Abdulilla Abbas, Svetlana B. Strashnova, and Pavel V. Strashnov. "Tautomeric transformations and electronic structures of azopyrazolone dyes and their metal complexes." Reviews in Inorganic Chemistry 38, no. 3 (2018): 87–101. http://dx.doi.org/10.1515/revic-2018-0007.

Full text

Abstract:

AbstractThe features of molecular and electronic structures of complex compounds derived from azopyrazolone derivatives are reviewed. Despite the wide use of metal-containing azopyrazolone dyes for more than 1.5 centuries, little information on their molecular structure is found. Our recent researches allowed the introduction of new coordination modes of azopyrazolone derivatives at complexation with metals. Together with traditional bi- and tridentate coordination, the possibility of an N pyrazolone atom to be involved in coordination was also found. As a result, polymeric or polynuclear comp

APA, Harvard, Vancouver, ISO, and other styles

17

Kalinowski, J., M. Cocchi, L. Murphy, J. A. G. Williams, and V. Fattori. "Bi-molecular emissive excited states in platinum (II) complexes for high-performance organic light-emitting diodes." Chemical Physics 378, no. 1-3 (2010): 47–57. http://dx.doi.org/10.1016/j.chemphys.2010.09.014.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Boddula, Rajamouli, and Sivakumar Vaidyanathan. "Bi-nuclear luminescent europium(III) molecular complexes for white light emitting diodes: Experimental and theoretical study." Inorganica Chimica Acta 494 (August 2019): 141–53. http://dx.doi.org/10.1016/j.ica.2019.05.014.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Braunschweig, Holger, Peter B. Brenner, Rian D. Dewhurst, and Krzysztof Radacki. "A Base-stabilized Iodoborylene Complex of Platinum(II)." Zeitschrift für Naturforschung B 68, no. 5-6 (2013): 747–49. http://dx.doi.org/10.5560/znb.2013-3079.

Full text

Abstract:

The first base-stabilized iodoborylene platinum complex was prepared through the addition of 4-picoline (4-Pic) to a suspension of an iodo-bridged binuclear iodoboryl complex. An X-ray structure determination of the title compound has characterized the molecular structure as cis-[Pt{BI(4- Pic)}I2(PCy3)]. The bond lengths lie in the expected range for neutral, base-stabilized borylene complexes. The strong trans influence of the borylene moiety is reflected in the longer Pt-1 distance for the iodo ligand opposite the borylene, compared to that opposite the phosphine ligand

APA, Harvard, Vancouver, ISO, and other styles

20

Diemer, Rolf, Uwe Dittes, Bernhard Nuber, Volker Seifried, Wolfgang Opferkuch, and Bernhard K. Keppler. "Synthesis, Characterization and Molecular Structures of some Bismuth(III) Complexes with Thiosemicarbazones and Dithiocarbazonic Acid Methylester Derivatives with Activity against Helicobacter Pylori." Metal-Based Drugs 2, no. 5 (1995): 271–92. http://dx.doi.org/10.1155/mbd.1995.271.

Full text

Abstract:

The reactions of bismuth(III) nitrate pentahydrate and bismuth(III) chloride with heterocyclic thiosemicarbazones and derivatives of dithiocarbazonic acid methylester were used to synthesize the respective bismuth(III) complexes, which could be divided into five groups D-H because of their stoichiometrical properties and their molecular structures. The molecular structure and the near coordination sphere of the bismuth(III) central atom of four representative compounds were determined by single-crystal X-ray studies. Bis[1-azepanyl-4-(2-pyridyl)-2,3-diazapenta-1,3-diene-1-thiolato-N′,N3,S]bism

APA, Harvard, Vancouver, ISO, and other styles

21

Katkova, Marina A., Grigory Y. Zhigulin, Roman V. Rumyantcev, et al. "Water-Soluble Bismuth(III) Polynuclear Tyrosinehydroximate Metallamacrocyclic Complex: Structural Parallels to Lanthanide Metallacrowns." Molecules 25, no. 19 (2020): 4379. http://dx.doi.org/10.3390/molecules25194379.

Full text

Abstract:

Recently there has been a great deal of interest and associated research into aspects of the coordination chemistry of lanthanides and bismuth—elements that show intriguing common features. This work focuses on the synthesis and characterization of a novel bismuth(III) polynuclear metallamacrocyclic complex derived from aminohydroxamic acid, in order to compare the coordination ability of Bi3+ with the similarly sized La3+ ions. A polynuclear tyrosinehydroximate Bi(OH)[15-MCCu(II)Tyrha-5](NO3)2 (1) was obtained according to the synthetic routes previously described for water-soluble Ln(III)-Cu

APA, Harvard, Vancouver, ISO, and other styles

22

Gong, Jingyi, Thomas N. Gaitanos, Olivia Luu, et al. "Gulp1 controls Eph/ephrin trogocytosis and is important for cell rearrangements during development." Journal of Cell Biology 218, no. 10 (2019): 3455–71. http://dx.doi.org/10.1083/jcb.201901032.

Full text

Abstract:

Trogocytosis, in which cells nibble away parts of neighboring cells, is an intercellular cannibalism process conserved from protozoa to mammals. Its underlying molecular mechanisms are not well understood and are likely distinct from phagocytosis, a process that clears entire cells. Bi-directional contact repulsion induced by Eph/ephrin signaling involves transfer of membrane patches and full-length Eph/ephrin protein complexes between opposing cells, resembling trogocytosis. Here, we show that the phagocytic adaptor protein Gulp1 regulates EphB/ephrinB trogocytosis to achieve efficient cell r

APA, Harvard, Vancouver, ISO, and other styles

23

Lukov, V. V., I. N. Shcherbakov, S. I. Levchenkov, et al. "Controlled Molecular Magnetism of Bi- and Polynuclear Transition Metal Complexes Based on Hydrazones, Azomethines, and Their Analogs." Russian Journal of Coordination Chemistry 45, no. 3 (2019): 163–87. http://dx.doi.org/10.1134/s1070328419030060.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Marfo-Owusu, Emmanuel, Kenji Okuyama, and Keiichi Noguchi. "THE CRYSTAL STRUCTURES OF 1:1 MOLECULAR COMPLEXES OF MONOALKYLAMMONIUM HALIDES WITH RAC-1,1′-BI-2-NAPHTHOL." Molecular Crystals and Liquid Crystals 399, no. 1 (2003): 29–42. http://dx.doi.org/10.1080/15421400390223167.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Mengele, Alexander K., Carolin Müller, Djawed Nauroozi, Stephan Kupfer, Benjamin Dietzek, and Sven Rau. "Molecular Scylla and Charybdis: Maneuvering between pH Sensitivity and Excited-State Localization in Ruthenium Bi(benz)imidazole Complexes." Inorganic Chemistry 59, no. 17 (2020): 12097–110. http://dx.doi.org/10.1021/acs.inorgchem.0c01022.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Martins, Evandro Paulo Soares, and Gerd B. Rocha. "Performance assessment of semiempirical molecular orbital methods in the structural prediction of Sb(III) and Bi(III) complexes." Journal of Molecular Modeling 19, no. 10 (2013): 4575–84. http://dx.doi.org/10.1007/s00894-013-1974-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Mehmood, Mehwish, Imtiaz-ud-Din., Anham Zafar, Azhar Iqbal, Maria Mukhtar, and Muhammad Nawaz Tahir. "Molecular architecture, characterization, and applications of homoleptic heteronuclear 3d/4f metals’ complexes derived from bi-compartmental Schiff-base." Journal of Molecular Structure 1274 (February 2023): 134547. http://dx.doi.org/10.1016/j.molstruc.2022.134547.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Brown Jr., Gordon E., George A. Parks, and Catherine J. Chisholm-Brause. "In-Situ X-Ray Absorption Spectroscopic Studies of Ions at Oxide-Water Interfaces." CHIMIA 43, no. 9 (1989): 248. https://doi.org/10.2533/chimia.1989.248.

Full text

Abstract:

Instructive insight is gained from a novel application of synchrotron-based EXAFS spectroscopy to the study of metal complexes sorbed at oxide/water interfaces. Fluorescence-yield X-ray absorption measurements were made on high surface area, wet oxide samples with less than monolayer sorbate coverages using high intensity synchrotron radiation. The samples studied included Co2⊕(aq) on γ-Al2O3 and TiO2 (rutile), Pb2⊕(aq) on γ-Al2O3, and aqueous selenate and selenite ions on α-FeOOH (goethite). Direct, in-situ measurements of the average distances, numbers, and identities of first- and second-ne

APA, Harvard, Vancouver, ISO, and other styles

29

RICHANI, Dulama, Yiqing ZHAO, Xiuhua LIAO, et al. "Novel Oocyte-Secreted Factors Improve Mouse IVM Outcomes." Fertility & Reproduction 04, no. 03n04 (2022): 132. http://dx.doi.org/10.1142/s2661318222740449.

Full text

Abstract:

Background: In vitro maturation (IVM) is a technology designed to obtain mature oocytes following culture of immature cumulus–oocyte complexes (COC) in vitro. IVM is characterized by minimal patient stimulation, making it attractive for patients with excessive AFC or those requiring immediate fertility preservation. However, the clinical uptake of IVM has been slow, primarily due to lower embryo yield and live birth rate relative to IVF, therefore improving IVM culture is required. Aim: To assess whether supplementation of IVM culture medium with the novel in-house engineered TGFβ proteins cum

APA, Harvard, Vancouver, ISO, and other styles

30

Biertümpel, Ingo, and Hans-Herbert Schmidtke. "Evaluation of Luminescence Decay Measurements Probed on Pure and Doped Pt(IV) Hexahalogeno Complexes. II. Molecular Properties Obtained from Temperature Dependent Lifetime Curves." Zeitschrift für Naturforschung A 52, no. 5 (1997): 447–56. http://dx.doi.org/10.1515/zna-1997-0513.

Full text

Abstract:

Abstract Lifetime measurements down to nearly liquid helium temperatures are used for determining energy levels and transition rates between excited levels and relaxations into the ground state. Energies are obtained from temperature dependent lifetimes by fitting experimental curves to model functions pertinent for thermally activated processes. Rates are calculated from solutions of rate equations. Similar parameters for pure and doped Pt(IV) hexahalogeno complexes indicate that excited levels largely belong to molecular units. Some of the rates between excited states are only somewhat large

APA, Harvard, Vancouver, ISO, and other styles

31

Qian, Zhe, Ying Zhang, Ai-Quan Jia, Hua-Tian Shi, and Qian-Feng Zhang. "Syntheses, molecular structures, and spectroscopic properties of manganese(II)/(III) complexes with tetraphenylimidodiphosphinato and bi-pyridine or salicylaldehyde ligands." Inorganica Chimica Acta 502 (March 2020): 119298. http://dx.doi.org/10.1016/j.ica.2019.119298.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Matienko, Ludmila I., Elena M. Mil, Anastasia A. Albantova, and Alexander N. Goloshchapov. "Selective Catalysis by Complexes Including Ni and Redox-Inactive Alkali Metals (Li, Na, or K) in Oxidation Processes: The Role of Hydrogen Bonds and Supramolecular Structures." International Journal of Molecular Sciences 26, no. 3 (2025): 1166. https://doi.org/10.3390/ijms26031166.

Full text

Abstract:

It is known that the presence of redox-inactive metals in the active center of an enzyme has a significant effect on its activity. In this regard and for other reasons, the effect of redox-inactive metals on redox processes, such as electron transfer, oxygen and hydrogen atom transfer, as well as the breaking and formation of O–O bonds in reactions catalyzed by transition metals, has been widely studied. Many questions about the role of redox-inactive metals in the mechanisms of these reactions remain open. In this paper, the mechanism of catalysis by bi- and triple hetero-binuclear heteroliga

APA, Harvard, Vancouver, ISO, and other styles

33

Schedler, Benno, Olessya Yukhnovets, Lennart Lindner, Alida Meyer, and Jörg Fitter. "The Thermodynamic Fingerprints of Ultra-Tight Nanobody–Antigen Binding Probed via Two-Color Single-Molecule Coincidence Detection." International Journal of Molecular Sciences 24, no. 22 (2023): 16379. http://dx.doi.org/10.3390/ijms242216379.

Full text

Abstract:

Life on the molecular scale is based on a versatile interplay of biomolecules, a feature that is relevant for the formation of macromolecular complexes. Fluorescence-based two-color coincidence detection is widely used to characterize molecular binding and was recently improved by a brightness-gated version which gives more accurate results. We developed and established protocols which make use of coincidence detection to quantify binding fractions between interaction partners labeled with fluorescence dyes of different colors. Since the applied technique is intrinsically related to single-mol

APA, Harvard, Vancouver, ISO, and other styles

34

Uson, Rafael, Juan Fornies, Milagros Tomas, Irene Ara, and Jose M. Casas. "Bi- and trinuclear platinum-silver complexes with or without platinum-silver bonds. Molecular structure of [PPh3(C6Cl5)ClPt(.mu.-Cl)AgPPh3]." Inorganic Chemistry 28, no. 12 (1989): 2388–92. http://dx.doi.org/10.1021/ic00311a027.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Imai, Yoshitane, Nobuo Tajima, Tomohiro Sato, and Reiko Kuroda. "Visualization of Molecular Recognition: A Novel System Based on Charge-Transfer Complexes Composed of 1,1‘-Bi-2-naphthol Derivatives andp-Benzoquinone." Organic Letters 8, no. 14 (2006): 2941–44. http://dx.doi.org/10.1021/ol060862q.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

ALBEDAIR, Lamia A. "Iron(III), gold(III), platinum(IV) and palladium(II) trimethoprim drug complexes: synthesis, spectroscopic, morphological and anticancer assessments." Revue Roumaine de Chimie 65, no. 12 (2021): 1145–52. http://dx.doi.org/10.33224/rrch.2020.65.12.09.

Full text

Abstract:

Iron(III), gold(III), platinum(IV) and palladium(II) complexes of trimethoprim (TMP) drug were synthesized and well characterized using elemental analysis, conductance measurements, (UV-Vis, FTIR, 1HNMR and X-ray powder diffraction) spectroscopy. The Au(III), Pt(IV) and Pd(II) complexes have a four coordinate geometry comprising one molecules of the TMP drug and two coordinated chloride ions, while, iron(III) complex has an octahedral geometry containing one TMP, three chloride and one coordinated water molecules. The TMP drug acts as a bi-dentate chelate towards the metal ions through the nit

APA, Harvard, Vancouver, ISO, and other styles

37

Deng, Rui, Ke Wu, Jiawei Lin, et al. "DeepSub: Utilizing Deep Learning for Predicting the Number of Subunits in Homo-Oligomeric Protein Complexes." International Journal of Molecular Sciences 25, no. 9 (2024): 4803. http://dx.doi.org/10.3390/ijms25094803.

Full text

Abstract:

The molecular weight (MW) of an enzyme is a critical parameter in enzyme-constrained models (ecModels). It is determined by two factors: the presence of subunits and the abundance of each subunit. Although the number of subunits (NS) can potentially be obtained from UniProt, this information is not readily available for most proteins. In this study, we addressed this gap by extracting and curating subunit information from the UniProt database to establish a robust benchmark dataset. Subsequently, we propose a novel model named DeepSub, which leverages the protein language model and Bi-directio

APA, Harvard, Vancouver, ISO, and other styles

38

Silveira, Célia M., Lidia Zuccarello, Catarina Barbosa, et al. "Molecular Details on Multiple Cofactor Containing Redox Metalloproteins Revealed by Infrared and Resonance Raman Spectroscopies." Molecules 26, no. 16 (2021): 4852. http://dx.doi.org/10.3390/molecules26164852.

Full text

Abstract:

Vibrational spectroscopy and in particular, resonance Raman (RR) spectroscopy, can provide molecular details on metalloproteins containing multiple cofactors, which are often challenging for other spectroscopies. Due to distinct spectroscopic fingerprints, RR spectroscopy has a unique capacity to monitor simultaneously and independently different metal cofactors that can have particular roles in metalloproteins. These include e.g., (i) different types of hemes, for instance hemes c, a and a3 in caa3-type oxygen reductases, (ii) distinct spin populations, such as electron transfer (ET) low-spin

APA, Harvard, Vancouver, ISO, and other styles

39

Du, Pingwu, Jacob Schneider, Fan Li, et al. "Bi- and Terpyridyl Platinum(II) Chloro Complexes: Molecular Catalysts for the Photogeneration of Hydrogen from Water or Simply Precursors for Colloidal Platinum?" Journal of the American Chemical Society 130, no. 15 (2008): 5056–58. http://dx.doi.org/10.1021/ja711090w.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Borovyk, Polina, Mariia Litvinchuk, Anton Bentya, Svitlana Orysyk, Yurii Zborovskiy, and Nataliia Slyvka. "Zn(II) and Ag(I) complexes of N-allythioamides of pyrimidinyl (cyclohexenyl) carboxylic acids and products their proton- and iodocyclization." Ukrainian Chemistry Journal 85, no. 3 (2019): 3–19. http://dx.doi.org/10.33609/0041-6045.85.3.2019.3-19.

Full text

Abstract:

The possibility of using N-allylcarbothioamide derivatives as well as products of their iodine- and proton-initiated electrophilic heterocyclizations as chelating agents in complexation reactions with Zn(II) and Ag(I) ions is shown. Processing of the obtained experimental data showed that N-allythioamides of pyrimidinyl (cyclohexenyl) carboxylic acids H2L1 – H2L3 and their proton- and iodo-cyclization products HL4, HL5 containing four nucleophilic reaction centers (two oxygen atoms of the carbonyl and hydroxyl groups and N-, S-carbothioamide groups or N-atoms of the dihydrothiazole moiety) are

APA, Harvard, Vancouver, ISO, and other styles

41

Borovyk, Polina, Mariia Litvinchuk, Anton Bentya, Svitlana Orysyk, Yurii Zborovskiy, and Nataliia Slyvka. "Zn(II) and Ag(I) complexes of N-allythioamides of pyrimidinyl (cyclohexenyl) carboxylic acids and products their proton- and iodocyclization." Ukrainian Chemistry Journal 85, no. 3 (2019): 3–19. http://dx.doi.org/10.33609/6045.85.3.2019.3-19.

Full text

Abstract:

The possibility of using N-allylcarbothioamide derivatives as well as products of their iodine- and proton-initiated electrophilic heterocyclizations as chelating agents in complexation reactions with Zn(II) and Ag(I) ions is shown. Processing of the obtained experimental data showed that N-allythioamides of pyrimidinyl (cyclohexenyl) carboxylic acids H2L1 – H2L3 and their proton- and iodo-cyclization products HL4, HL5 containing four nucleophilic reaction centers (two oxygen atoms of the carbonyl and hydroxyl groups and N-, S-carbothioamide groups or N-atoms of the dihydrothiazole moiety) are

APA, Harvard, Vancouver, ISO, and other styles

42

Peeters, Bas W. A., Alexandra C. A. Piët, and Maarten Fornerod. "Generating Membrane Curvature at the Nuclear Pore: A Lipid Point of View." Cells 11, no. 3 (2022): 469. http://dx.doi.org/10.3390/cells11030469.

Full text

Abstract:

In addition to its structural role in enclosing and protecting the genome, the nuclear envelope (NE) forms a highly adaptive communication interface between the cytoplasm and the nuclear interior in eukaryotic cells. The double membrane of the NE is perforated by nuclear pores lined with large multi-protein structures, called nuclear-pore complexes (NPCs), which selectively allow the bi-directional transport of ions and macromolecular cargo. In order to nucleate a pore, the inner and outer nuclear membrane have to fuse at the site of NPC insertion, a process requiring both lipid bilayers to be

APA, Harvard, Vancouver, ISO, and other styles

43

Hagan, Iain M., and Agnes Grallert. "Spatial control of mitotic commitment in fission yeast." Biochemical Society Transactions 41, no. 6 (2013): 1766–71. http://dx.doi.org/10.1042/bst20130190.

Full text

Abstract:

The activation of the Cdk1 (cyclin-dependent kinase 1)–cyclin B complex to promote commitment to mitosis is controlled by the phosphorylation status of the Cdk1 catalytic subunit. Cdk1 phosphorylation by Wee1 kinases blocks activation until Cdc25 (cell division cycle 25) phosphatases remove this phosphate to drive division. Feedback inhibition of Wee1 and promotion of Cdc25 activities by the newly activated Cdk1–cyclin B complexes ensure that the transition from interphase to mitosis is a rapid and complete bi-stable switch. Although this level of molecular understanding of the mitotic commitm

APA, Harvard, Vancouver, ISO, and other styles

44

De Soricellis, Giulia, Véronique Guerchais, Alessia Colombo, et al. "Effect of the Substitution of the Mesityl Group with Other Bulky Substituents on the Luminescence Performance of [Pt(1,3-bis(4-Mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl]." Molecules 30, no. 7 (2025): 1498. https://doi.org/10.3390/molecules30071498.

Full text

Abstract:

The synthesis and characterization of two new complexes, namely [Pt(bis(4-(4-(tert-butyl)phenyl)-pyridin-2-yl)-4,6-difluorobenzene)Cl] and [Pt(bis(4-(3,5-di-tert-butylphenyl)-pyridin-2-yl)-4,6-difluorobenzene)Cl], are reported. Both are highly luminescent in the blue region (Φlum = 0.89–0.95 at 478–480 nm), like the parent complex [Pt(1,3-bis(4-mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl] in degassed diluted dichloromethane solution. An increase in concentration leads to the formation of bi-molecular emissive excited states, as evidenced by a growing structureless band that peaked at 690–697

APA, Harvard, Vancouver, ISO, and other styles

45

Danilkovich, A. V., D. A. Tikhonov, and V. M. Lipkin. "Dynamics of 24 Self-Assembling H-(RADA)<sub>4</sub>-OH Peptides Complexed in Bi-Layered Structure with Layers in <i>syn</i> and <i>anti</i> Orientation." Биоорганическая химия 49, no. 3 (2023): 306–18. http://dx.doi.org/10.31857/s0132342323030107.

Full text

Abstract:

H-(RADA)4-OH peptide in water tends to form biolgels at physiological conditions. Thusly made scaffold is formed of fibrils resulted from peptides self-assembling. Fibrils have two external hydrophilic layers, while hydrophobic one is situated between of them. Bio gels by the H-(RADA)4-OH peptides are considered to be a prominent source for designed extra cellular matrix aimed to cell cultures of different types. Little is known about detailed structure the filament structure and β-sheets peptide composition. We have designed and studied molecular dynamics of bi-layered protofilament structure

APA, Harvard, Vancouver, ISO, and other styles

46

Pangburn, M. K., and N. Rawal. "Structure and function of complement C5 convertase enzymes." Biochemical Society Transactions 30, no. 6 (2002): 1006–10. http://dx.doi.org/10.1042/bst0301006.

Full text

Abstract:

The multisubunit enzymes of the complement system that cleave C5 have many unusual properties, the most striking of which is that they acquire their specificity for C5 following cleavage of another substrate C3. C5 convertases are assemblies of two proteins C4b and C2a (classical or lectin pathways) or C3b and Bb (alternative pathway) and additional C3b molecules. The catalytic complexes (C4b, C2a or C3b, Bb) are intrinsically unstable (t1,2 = 1–3 min) and the enzymes are controlled by numerous regulatory proteins that accelerate this natural decay rate. Immediately after assembly, the bi-mole

APA, Harvard, Vancouver, ISO, and other styles

47

He, Yonghui, Yannan Bin, Yizeng Liang, and Juan Xiang. "Density functional investigation of the molecular structures, vibrational and absorption spectra of metal thiolate complexes, M(SC6H5)3 (M=As, Sb or Bi)." Computational and Theoretical Chemistry 994 (August 2012): 91–96. http://dx.doi.org/10.1016/j.comptc.2012.06.023.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Zhang, Xin, Timothy J. Prior, Kai Chen, Orlando Santoro, and Carl Redshaw. "Ring Opening Polymerization of Lactides and Lactones by Multimetallic Titanium Complexes Derived from the Acids Ph2C(X)CO2H (X = OH, NH2)." Catalysts 12, no. 9 (2022): 935. http://dx.doi.org/10.3390/catal12090935.

Full text

Abstract:

The reactions of the titanium alkoxide [Ti(OR)4] (R = Me, nPr, iPr, tBu) with the acids 2,2’-Ph2C(X)(CO2H), where X = OH and NH2, i.e., benzilic acid (2,2’-diphenylglycolic acid, L1H2), and 2,2’-diphenylglycine (L2H3), have been investigated. The variation of the reaction stoichiometry allows for the isolation of mono-, bi-, tri or tetra-metallic products, the structures of which have been determined by X-ray crystallography. The ability of the resulting complexes to act as catalysts for the ring opening polymerization (ROP) of ε-caprolactone (ε-CL) and r-lactide (r-LA) has been investigated.

APA, Harvard, Vancouver, ISO, and other styles

49

Krenács, T., H. Uda, and S. Tanaka. "One-step double immunolabeling of mouse interdigitating reticular cells: simultaneous application of pre-formed complexes of monoclonal rat antibody M1-8 with horseradish peroxidase-linked anti-rat immunoglobulins and of monoclonal mouse anti-Ia antibody with alkaline phosphatase-coupled anti-mouse immunoglobulins." Journal of Histochemistry & Cytochemistry 39, no. 12 (1991): 1719–23. http://dx.doi.org/10.1177/39.12.1940324.

Full text

Abstract:

A novel one-step double immunolabeling method was elaborated on the basis of the simultaneous application of preformed molecular complexes of two primary antibodies with their specific secondary antibodies labeled with different enzymes. Treatment with a rat monoclonal antibody (MAb), M1-8, pre-coupled with horseradish peroxidase-linked sheep anti-rat immunoglobulins, and enzyme reaction revealed by the 3-amino-9-ethylcarbazole/hydrogen peroxide reaction, resulted in red-brown intracytoplasmic staining of interdigitating reticular cells in the lymph nodes of Balb/c mice. Another molecular comp

APA, Harvard, Vancouver, ISO, and other styles

50

Ma, Xiuyan, Yunfei Hu, Hossein Batebi та ін. "Analysis of β2AR-Gs and β2AR-Gi complex formation by NMR spectroscopy". Proceedings of the National Academy of Sciences 117, № 37 (2020): 23096–105. http://dx.doi.org/10.1073/pnas.2009786117.

Full text

Abstract:

The β2-adrenergic receptor (β2AR) is a prototypical G protein-coupled receptor (GPCR) that preferentially couples to the stimulatory G protein Gs and stimulates cAMP formation. Functional studies have shown that the β2AR also couples to inhibitory G protein Gi, activation of which inhibits cAMP formation [R. P. Xiao, Sci. STKE 2001, re15 (2001)]. A crystal structure of the β2AR-Gs complex revealed the interaction interface of β2AR-Gs and structural changes upon complex formation [S. G. Rasmussen et al., Nature 477, 549–555 (2011)], yet, the dynamic process of the β2AR signaling through Gs and

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!