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Laser induced optoacoustic spectroscopy of benzil: Evaluation of structural volume change upon photoisomerization

Paper ID Volume ID Publish Year Pages File Format Full-Text
27492 44026 2008 6 PDF Available
Title
Laser induced optoacoustic spectroscopy of benzil: Evaluation of structural volume change upon photoisomerization
Abstract

The cis-skew to trans-planar photoisomerization of benzil in the photoexcited state was studied by laser-induced optoacoustic spectroscopy (LIOAS) in a series of normal alkane solvents at room temperature. The structural volume change due to the photoisomerization process has been estimated and compared with the same calculated from the optimized skew and trans structures. The magnitude of the structural volume change is estimated to be 22.9 ± 1.2 mL/mol. This study reveals that an expansion in volume occurs during the photoinduced isomerization process. In non-polar alkane solvents, the estimated volume change has been argued to be free from electrostrictional contribution.

Keywords
Laser induced optoacoustic spectroscopy; Photoacoustic calorimetry; Benzil; Photoisomerization; Structural volume change
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 198, Issues 2–3, 15 August 2008, Pages 256–261
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
You save - $31
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