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Synthesis and photophysical studies of non-covalently linked porphyrin dyads and triads

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Title Synthesis and photophysical studies of non-covalently linked porphyrin dyads and triads
 
Creator SOKKALINGAM, P
SANTRA, S
MANGALAMPALLI, R
 
Subject side-to-face
energy-transfer
electron-transfer
solid-state
dimers
arrays
oligomers
coordination
pathways
adducts
porphyrin dyads and triads
non-covalent
21-thiaporphyrin
fluorescence properties
 
Description Non-covalent porphyrin dyads and triads containing N3S porphyrin and RuN4 porphyrin subunits were synthesized by treating meso-pyridyl-21-thiaporphyrin with RuTPP(CO)(EtOH) in toluene at refluxing temperature. The dyads and triads were characterized by various spectroscopic techniques and the properties were compared with the reported dyad containing N-4 and RuN4 porphyrin subunits. The H-1 NMR study of dyads and triads indicated that the inner NH, beta-heterocycle and meso-pyridyl protons of the 21-thiaporphyrin unit experienced large upfield shifts as compared to their corresponding monomeric meso-pyridyl-21-thiaporphyrins due to the ring current effect of RuTPP(CO) subunit. The singlet state photophysical properties of N3S porphyrin subunit in dyads and triads showed 50-80% quenching of fluorescence as observed previously for N-4-RuN4 dyad due to heavy ruthenium ion(s). Copyright (c) 2007 Society of Porphyrins & Phthalocyanines.
 
Publisher SOC PORPHYRINS & PHTHALOCYANINES
 
Date 2011-08-29T07:24:22Z
2011-12-26T12:58:29Z
2011-12-27T05:48:31Z
2011-08-29T07:24:22Z
2011-12-26T12:58:29Z
2011-12-27T05:48:31Z
2007
 
Type Article
 
Identifier JOURNAL OF PORPHYRINS AND PHTHALOCYANINES, 11(2), 85-94
1088-4246
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12012
http://hdl.handle.net/10054/12012
 
Language en