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Your search keyword '"Mukherjee, Tulsi"' showing total 478 results
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478 results on '"Mukherjee, Tulsi"'

32. Structural investigation of asymmetrical dimer radical cation system [([H.sub.2]O-[H.sub.2]S).sup.+]: Proton-transferred or hemi-bonded?

Author

Joshi, Ravi, Ghanty, Tapan K., Naumov, Sergej, and Mukherjee, Tulsi

Subjects
Density functionals -- Usage, Hydrogen sulfide -- Chemical properties, Hydrogen sulfide -- Structure, Water -- Structure, Water -- Chemical properties, Chemicals, plastics and rubber industries
Abstract

The structure and bonding of [([H.sub.2]O-[H.sub.2]S).sup.+], an asymmetrical dimer radical cation system, was characterized by employing ab initio molecular orbital and hybrid density functional methods. The calculated results shows that the dimer radical cation structure with [H.sub.2]O as proton acceptor is more stable than those structures in which [H.sub.2]O acts as a proton donor or the 2c-3e hemi-bonded [([H.sub.2]O-S[H.sub.2]).sup.+] system.

Published
2007

40. Radical scavenging and catalytic activity of metal-phenolic complexes

Author

Mahal, Harbir S., Kapoor, Sudhir, Satpati, Ashis K., and Mukherjee, Tulsi

Subjects
Radiolysis -- Usage, Coordination compounds -- Chemical properties, Chemicals, plastics and rubber industries
Abstract

Pulse radiolysis studies reveals that the metal complexes of Mn(II)-, Fe(II)-, or Cu(II)- with phenolic antioxidants are able to undergo electron-transfer reactions. The study revealed that the rate constants for the scavenging of superoxide radical anions by the metal-phenol complexes are fairly comparable to those for natural superoxide dismutase (SOD) at near physiological pHs.

Published
2005

41. Electron injection into the surfaces states of ZrO(sub 2) nanoparticles from photoexcited quinizarin and its derivatives: effect of surface modification

Author

Rath, Madhab C., Ramkrishna, G., Mukherjee, Tulsi, and Ghosh, Hirendra N.

Subjects
Zirconium oxide -- Chemical properties, Zirconium oxide -- Atomic properties, Electron transport -- Analysis, Emission spectroscopy -- Usage, Nanoparticles -- Atomic properties, Chemicals, plastics and rubber industries
Abstract

The effect of surface modification on interfacial electron transfer (IET) dynamics into the surface states of ZrO(sub2) nanoparticles sensitized by quinizarin (Qz) and its derivatives were carried out using time-resolved emission spectroscopy. The time-resolved emission data indicates that upon surface modification the majority of the deep trap states of ZrO(sub2) nanoparticles can be removed with the formation of some new shallower trap states in the band gap region.

Published
2005

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