Articles written in Journal of Chemical Sciences
Volume 122 Issue 4 July 2010 pp 491-510 Full Papers
We perform the nuclear dynamics simulation to calculate the broad band as well as better resolved (a)
Volume 123 Issue 6 November 2011 pp 951-961
Quaternary ammonium salt mediated highly regioselective ring opening of aziridines with zinc(II) halides to racemic and non-racemic 𝛽-halo amines in excellent yield and selectivity is described. The reaction proceeds via an SN2-type pathway and the partial racemization of the starting substrate and the product was effectively controlled by using quaternary ammonium salts to afford the enantioenriched products (er up to 95:5).
Volume 124 Issue 6 November 2012 pp 1217-1228
Binding of metal complexes of C2-glucosyl conjugates with DNA has been established by absorption and fluorescence studies. Conformational changes occurred in DNA upon binding have been studied by circular dichroism. All these studies are suggestive that the metal complexes bind to DNA through intercalation. Binding of di-nuclear copper complex 5 was found to be stronger when compared to the other complexes studied. Copper complexes were found to cleave the plasmid DNA in the absence of oxidizing or reducing agent, whereas, zinc complexes do not cleave. Metal complexes have shown toxicity to the HeLa and MCF-7 cell lines.Morphological studies, western blot and FACS analysis are suggestive of apoptotic cell death induced by the metal complexes. Di-nuclear copper complexes were found to be better as compared to the mononuclear ones in binding, plasmid cleavage and also in causing more cell death.
Volume 127 Issue 2 February 2015 pp 257-264
A new Co(II)-based three-dimensional (3D) framework having the molecular formula [Co(C4O4)(4-bpmh))H2O)2]n·2nH2O·2nMeOH·(
Volume 127 Issue 9 September 2015 pp 1637-1643
A new quinoline based hydrazone was synthesized via a condensation reaction and characterized by NMR, mass and single crystal X-ray diffraction studies. It was investigated for suitability as a reversible ratiometric fluorescent pH sensor in acidic pH region. The sensor exhibits intramolecular charge transfer (ICT) type photophysical changes upon protonation of the quinoline ring. No significant interference on emission behavior was observed in the presence of various metal ions.
Volume 127 Issue 10 October 2015 pp 1819-1826
Volume 134 All articles Published: 7 March 2022 Article ID 0037
Low-cost semiconductors have emerged as potential electrolyte materials for intermediate temperature solid oxide fuel cells (IT-SOFC). The present work describes the synthesis and characterizationof Ti0.95M0.05O2-δ (M = Ni, Cu, Zn) followed by the determination of ionic conductivity using a.c. impedance technique. The formation of the solid solution was confirmed by XRD, Raman, FTIR, DR-UV–Vis, PL, BET,FE-SEM, and EDX. The obtained ionic conductivities (in S cm-1) for TiO2 (1.92 9 10-5), Ti0.95Ni0.05O2-δ(2.78 9 10-5), Ti0.95Zn0.05O2-δ (2.16 9 10-5) at 973 K and for Ti0.95Cu0.05O2-δ (2.39 9 10-3) at 1023 K are comparable to commercially available YSZ operating at high temperature and doped ceria electrolytes. The ionic conductivities were found to increase linearly in the temperature range of 673–1023 K. The lower activation energy of 1.08, 1.41, and 1.17 eV was obtained for TiO2, Ti0.95Ni0.05O2-δ, and Ti0.95Zn0.05O2-δ,respectively. Thus, low-cost Ni, Cu, Zn-doped TiO2 solid solutions may be regarded as plausible electrolyte materials for SOFCs.
Structural and electrical properties of Ti0.95M0.05O2−δ (M = Ni, Cu, Zn) are reported for their plausible applications as SOFC electrolytes. Lower Ea of 1.08, 1.41, and 1.17 eV are obtained for TiO2, Ni-TiO2 and Zn-TiO2, samples respectively. The Cu-TiO2 showed comparable oxide ion conductivity with other potential electrolyte materials.
Volume 135, 2023
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