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and f, denoted in Fig. 12, shows upfield shifts about 0.07, 0.14, 0.10,
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indicated that diarylethene 1b should bind with Cu2þ. Moreover,
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spectral results indicate that the formed complex between diary-
lethene 1b and Cu2þ (denoted Cu-1b) is fluxional, which may
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4. Conclusion
In summary, a new photochromic diarylethene was successfully
synthesized, and its multiple responsive photochromism and
selective binding affinity for Cu2þ were examined. The results indi-
cate that the diarylethene shows excellent photochromic properties
with distinctive color changes, excellent fatigue resistance, and
special binding selectivity to Cu2þ. It has been demonstrated that
with right engineering and construction of a suitable diarylethene,
a multiple responsive photoswitch can be achieved. Tuning of
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Acknowledgments
This work was supported by Program for the NSFC of China
(20962008), New Century Excellent Talents in University (NCET-08-
0702), the Project of Jiangxi Academic and Technological leader
(2009DD00100), Natural Science Foundation of Jiangxi Province
(2010GQH0039, 2010GQH0038, 2009GQH0036), and the Project of
the Science Funds of Jiangxi Education Office (GJJ10241, GJJ09646)
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