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Title: Structural volume change upon photoisomerization of 2,2´-furil: A photoacoustic calorimetric study
Authors: Sarkar, Deboleena
Chakrabarty, Alok
Chattopadhyay, Nitin
Keywords: Photochemistry;Photoisomerization;Photoacoustic calorimetry;Structural volume change;Furil;Dicarbonyls
Issue Date: Jan-2009
Publisher: CSIR
Abstract: The cis-skew → trans-planar photoisomerization of 1, 2-di(furan-2-yl)ethane-1, 2-dione (2, 2´-furil), a 1,2-dicarbonyl compound, in the photoexcited triplet state has been investigated by photoacoustic calorimetry in a series of n-alkane solvents at room temperature. The photoisomerization process is associated with a structural volume change of the probe. This has been evaluated and compared with the theoretically calculated volumes of cis and trans geometries of furil. The study reveals that an expansion in volume occurs during the photoinduced isomerization process. In low polarity alkane solvents, electrostrictional contribution to the estimated volume change has been argued to be negligible.
Page(s): 45-50
ISSN: 0376-4710
Appears in Collections: IJC-A Vol.48A(01) [January 2009]

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