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4. Conclusions
Five new unsymmetrical diarylethenes possessing an isoxazole
moiety were synthesized to investigate substituent effects on their
photochemical and electrochemical properties. The new photo-
chromic systems exhibited remarkable photochromism and acted
as a notable fluorescent switch both in solution and in amorphous
polymer films. The different substituents at the p-position of the
terminal benzene ring have a significant effect on the properties of
these diarylethene derivatives. The isoxazole moiety induced some
new features differing from other diarylethenes with other heter-
oaryl moieties reported so far. The results will be helpful in de-
signing new diarylethenes for further potential applications.
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Acknowledgements
21. Morimitsu, K.; Shibata, K.; Kobatake, S.; Irie, M. J. Org. Chem. 2002, 67,
4574e4578.
This work was supported by Program for the NSFC of China
(20962008), New Century Excellent Talents in University (NCET-08-
0702), the Key Scientific Project from Education Ministry of China
(208069), the Project of Jiangxi Academic and Technological leader
(2009DD00100), National Natural Science Foundation of Jiangxi
Province (2008GZH0020, 2009GZH0034) and the Science Funds of
the Education Office of Jiangxi, China (GJJ09646, GJJ09567).
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