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Spectroscopic properties of meso-thienylporphyrins with different porphyrin cores

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Field Value
 
Title Spectroscopic properties of meso-thienylporphyrins with different porphyrin cores
 
Creator GUPTA, ITI
RAVIKANTH, M
 
Subject heteroporphyrins
spectroscopic properties
meso-thienylporphyrins
 
Description The absorption and fluorescence properties of a series of meso-thienylporphyrins with different porphyrin cores (N4, N3O, N3S and N2S2 cores) were studied and compared with the corresponding meso-tetraarylporphyrins. The replacement of six-membered phenyl groups with five-membered thienyl groups at meso-positions resulted in red shifts and broadening of absorption and emission bands, low quantum yields and decreased S1 state lifetimes and the maximum effects were observed for meso-tetrathienylporphyrin with N2S2 porphyrin core. Similar observations were noted for the dications of meso-thienylporphyrins compared to the dications of the corresponding meso-tetraarylporphyrins. These results suggest that the replacement of six-membered aryl group with five-membered thienyl groups at meso-positions, the electronic properties of the porphyrin were altered significantly.
 
Publisher Elsevier
 
Date 2009-03-23T05:13:55Z
2011-11-25T20:12:57Z
2011-12-26T13:08:51Z
2011-12-27T05:34:13Z
2009-03-23T05:13:55Z
2011-11-25T20:12:57Z
2011-12-26T13:08:51Z
2011-12-27T05:34:13Z
2006
 
Type Article
 
Identifier Journal of Photochemistry and Photobiology A: Chemistry 177(2-3), 156-163
1010-6030
http://dx.doi.org/10.1016/j.jphotochem.2005.05.020
http://hdl.handle.net/10054/1073
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1073
 
Language en