Avinash S. Kumbhar

Savitribai Phule Pune University

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Anupa A. Kumbhar

Savitribai Phule Pune University

Subhash Padhyé

Savitribai Phule Pune University

Sakharam B. Tayade

Savitribai Phule Pune University

Rajendra Joshi

Centre for Development of Advanced Computing

Vitthal A. Kawade

Dr. Vitthalrao Vikhe Patil Foundation’s Medical College

Ray J. Butcher

Howard University

Satish S. Bhat

Karnatak University

Megha S. Deshpande

Goa University

Evamarie Hey‐Hawkins

Leipzig University

Sushma B. Singh

National Institute of Pharmaceutical Education and Research

Cooperative Institutions

Savitribai Phule Pune University

108

National Chemical Laboratory

Agharkar Research Institute

Bhabha Atomic Research Centre

Indian Institute of Technology Bombay

Academy of Scientific and Innovative Research

Centre for Development of Advanced Computing

Council of Scientific and Industrial Research

Indian Institute of Science Education and Research Pune

G.S. Science, Arts And Commerce College

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DNA-binding studies of mixed ligand cobalt(III) complexes

Transition Metal Chemistry (2005)

A. Barve Smita Ghosh Anupa A. Kumbhar Avinash S. Kumbhar Vedavati G. Puranik

Ethylene diamine

Phenazine

Organometallic Chemistry

Phenanthroline

Bipyridine

10.1007/s11243-004-5855-0

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Citations (22)

Improved fluorinated hydrogenated amorphous silicon alloys prepared using the hot-plasma-box glow-discharge technique

Philosophical Magazine B (1994)

D. M. Bhusari Avinash S. Kumbhar S. T. Kshirsagar

Abstract The structural, optical and electrical properties of fluorinated hydrogenated amorphous silicon alloy thin films grown from a SiF4-SiH4-H2 gas mixture in a new hot-plasma-box (HPB) glow-discharge reactor are reported. We observed that the-HPB technique provides almost four times better growth rates (as high as 2–4 Å s−1) for r.f. powers as low as 200mW cm−2 together with an order-of-magnitude improvement in the photoconductivity gain (to as high as 2 × 105) compared with films deposited using the conventional r.f. plasma chemical vapour deposition technique and the same gas mixture. Furthermore, Raman scattering measurements indicate that there is a substantial enhancement of the structural short-range order (SRO) in these alloy films prepared in the HPB. The improvement in the optoelectronic properties of the films and its correlation with the improvement of SRO are discussed in this paper.

Glow discharge

Photoconductivity

10.1080/01418639408241805

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Bis(maltolato)vanadium(III)-Polypyridyl Complexes: Synthesis, Characterization, DNA Cleavage, and Insulin Mimetic Activity

Inorganic Chemistry (2010)

Md. Nazrul Islam Anupa A. Kumbhar Avinash S. Kumbhar Matthias Zeller Ray J. Butcher

Four vanadium(III) complexes of the general formula [V(maltol)2(N−N)]ClO4, where N−N is 2,2′-bipyridine (bpy) (1); 1,10-phenanthroline (phen) (2); dipyrido[3,2-d:2′,3′-f]quinoxaline (dpq) (3), and dipyrido[3,2-a:2′,3′-c]phenazine (dppz) (4), have been synthesized and characterized by IR, UV−visible, NMR spectroscopies, and electrospray ionization mass spectra (ESI-MS). The complexes exhibit the typical 1H NMR spectra for paramagnetic V(III) species. The structures of complexes 1, 2, and 3 were characterized by single crystal X-ray diffraction. All complexes are monomeric and cationic containing V(III) species ligated to one neutral polypyridyl ligand and two monoanionic bidentate maltolate ligands with a distorted octahedral geometry. The complexes show an irreversible redox peak around +0.80 V versus Ag/AgCl corresponding to one-electron oxidation of V(III) to V(IV). The time-resolved UV−visible spectral changes for the complexes during the electrolysis in acetonitrile solution at +1.0 V are consistent with one-electron oxidation of the complexes to yield the stable V(IV) species. All complexes cleave plasmid pBR322 DNA without the addition of any external agents. In vitro insulin mimetic activity against insulin responsive RIN 5f cells indicates that complex 1 has similar activity to insulin while the others have moderate insulin mimetic activity.

Phenazine

Quinoxaline

Octahedral molecular geometry

Bipyridine

Proton NMR

10.1021/ic9025359

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Citations (49)

CCDC 1890877: Experimental Crystal Structure Determination

The Cambridge Structural Database (2021)

Abhineet Verma Nattamai Bhuvanesh Joseph H. Reibenspies Sakharam B. Tayade Avinash S. Kumbhar

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccdc.csd.cc21gm16

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Heteroleptic Copper(I) complexes of bipyridine glycoluril and phosphine ligands: Photophysical and computational studies

Inorganica Chimica Acta (2022)

A.N. Jadhav Sushma B. Singh Manoj V. Mane Avinash S. Kumbhar

HOMO/LUMO

Proton NMR

Bipyridine

10.1016/j.ica.2022.120934

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Citations (6)

Novel alkyl-substituted 4-methoxy benzaldehyde thiosemicarbazones: Multi-target directed ligands for the treatment of Alzheimer's disease

European Journal of Pharmacology (2023)

Mokshada E. Varma Vinod G. Ugale Javeria Shaukat Michael Hollmann Padmaja Shete

10.1016/j.ejphar.2023.176028

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Citations (5)

Coordination polymers of Cd^II and Pb^II derived from bipyridine–glycoluril: influence of metal-ion size and counter-ions

Acta Crystallographica Section C Structural Chemistry (2019)

Sakharam B. Tayade Datta Markad Avinash S. Kumbhar Andrea Erxleben Debamitra Chakravarty

Two new one-dimensional (1D) coordination polymers (CPs), namely catena-poly[[[aquacadmium(II)]-bis(μ-4b,5,7,7a-tetrahydro-4b,7a-epiminomethanoimino-6H-imidazo[4,5-f][1,10]phenanthroline-6,13-dione)] bis(perchlorate) dihydrate], {[Cd(C14H10N6O2)2(H2O)](ClO4)2·2H2O}n or {[Cd(BPG)2(H2O)](ClO4)2·2H2O}n, 1, and catena-poly[[lead(II)-bis(μ-4b,5,7,7a-tetrahydro-4b,7a-epiminomethanoimino-6H-imidazo[4,5-f][1,10]phenanthroline-6,13-dione)] bis(perchlorate) dihydrate], {[Pb(C14H10N6O2)2](ClO4)2·2H2O}n or {[Pb(BPG)2](ClO4)2·2H2O}n, 2, have been synthesized using bipyridine-glycoluril (BPG; systematic name: 4b,5,7,7a-tetrahydro-4b,7a-epiminomethanoimino-6H-imidazo[4,5-f][1,10]phenanthroline-6,13-dione), a urea-fused tecton, in a mixed-solvent system. The CdII ion in 1 is heptacoordinated and the PbII ion in 2 is hexacoordinated, with the CdII ion adopting a pentagonal bipyramidal geometry and the PbII ion adopting a distorted octahedral geometry. Both CPs form infinite linear chain structures which are hydrogen bonded to each other leading to the formation of three-dimensional supramolecular network structures. Topological analysis of CPs 1 and 2 reveals that the structures exhibit 1D chain-like arrangements in an AB-AB sequence and shows platonic uniform 2-connected uninodal topologies. Furthermore, a comparative analysis of a series of structures based on the BPG ligand indicates that the size of the metal ion and the types of counter-ions used have a great influence on the resulting frameworks and properties.

Bipyridine

Coordination polymer

2,2'-Bipyridine

Coordination complex

10.1107/s2053229619008325

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Citations (1)

CCDC 659971: Experimental Crystal Structure Determination

The Cambridge Structural Database (2008)

Anupa A. Kumbhar Avinash S. Kumbhar V.G. Puranik

10.5517/ccq4rdz

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