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Charge transfer fluorescence of trans-stryrylpyridinium iodides

Paper ID Volume ID Publish Year Pages File Format Full-Text
27634 44034 2011 5 PDF Available
Title
Charge transfer fluorescence of trans-stryrylpyridinium iodides
Abstract

The photoprocesses of trans-1-methyl-4-[4-R-styryl]pyridinium iodide (R = H, P1) and derivatives with a cyano, a nitro and a methoxy group at the phenyl moiety, P2–P4, respectively, were studied in solution. In solvents of relatively low polarity, e.g. tetrahydrofuran, where contact ion pairs are present, the fluorescence spectrum of the styrylpyridinium is significantly red-shifted and the quantum yield is strongly enhanced. These findings are due to photoinduced electron transfer from I− to the excited singlet state of the cation. The features of complementary trans-styrylquinolinium iodides are in good accordance.

Keywords
CT; Fluorescence; Iodide; Styrylpyridinium; Styrylquinolinium
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Charge transfer fluorescence of trans-stryrylpyridinium iodides
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 218, Issues 2–3, 25 February 2011, Pages 199–203
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
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Price was $35.95
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