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Photophysics and photochemistry of the 2,4,6-triphenyl-2-benzyl-2H-thiopyran versus 2H-pyran derivatives

Paper ID Volume ID Publish Year Pages File Format Full-Text
28837 44096 2006 9 PDF Available
Title
Photophysics and photochemistry of the 2,4,6-triphenyl-2-benzyl-2H-thiopyran versus 2H-pyran derivatives
Abstract

The photochemistry and photophysics of one thiopyran (2,4,6-triphenyl-2-benzyl-2H-thiopyran) and two pyran (2,4,6-triphenyl-2H-pyran and 2,4-dimethyl-2,6-diphenyl-2H-pyran) derivatives were investigated by stationary and time resolved techniques. Both theory and experiments indicated a π,π* character for the lowest singlet states of these molecules, located in the UV region approximately at the same energy. Upon stationary UV irradiation at low temperature, colourless photoproducts were formed from the pyran derivatives, while coloured compound(s) were obtained from the thiopyran. Long-lived transients were observed at room temperature, which were assigned to the photoproducts obtained at low temperature; only in one case (2,4,6-triphenyl-2H-pyran) a triplet precursor was detected.

Keywords
Photophysics; Photochemistry; 2,4,6-Triphenyl-2H-thiopyran; 2H-pyran
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Photophysics and photochemistry of the 2,4,6-triphenyl-2-benzyl-2H-thiopyran versus 2H-pyran derivatives
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 177, Issue 1, 1 January 2006, Pages 34–42
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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