fulltext.study @t Gmail

Different photochemical behavior of bis(biphenyl)ethylenes and ethenes in solution and in the solid-state: Structurally controlled Z/E-photoisomerization in the solid-state

Paper ID Volume ID Publish Year Pages File Format Full-Text
28575 44081 2006 6 PDF Available
Title
Different photochemical behavior of bis(biphenyl)ethylenes and ethenes in solution and in the solid-state: Structurally controlled Z/E-photoisomerization in the solid-state
Abstract

Several bis(biphenyl)ethylenes and ethenes were prepared and their photoisomerization both in solution and in the solid-state was investigated. While all ethylenes and ethenes gave the solutions containing both E- and Z-isomers in the manner of the mutual photoisomerization, the ethylenes having at least one hydrogen atom on the sp2 carbons underwent unidirectional photoisomerization from the Z-isomers to the E-isomers in the solid-state even at low temperature. On the other hand, both the E- and Z-ethenes having no hydrogen atom on the double bonds did not change when irradiated in the solid-state even at room temperature. These different photochemical behaviors can be explained by the Hula-twist (HT) mechanism in such confined environments.

Keywords
Photoisomerization; Solid-state; Unidirectional isomerization; Hula-twist mechanism
First Page Preview
Different photochemical behavior of bis(biphenyl)ethylenes and ethenes in solution and in the solid-state: Structurally controlled Z/E-photoisomerization in the solid-state
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 184, Issues 1–2, 15 November 2006, Pages 44–49
Authors
, , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering