Journal
TETRAHEDRON
Volume 65, Issue 17, Pages 3496-3501Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2009.02.038
Keywords
Photoresponsive; Organogel; Self-assembly; Natural amino acid; Dendron
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Funding
- National Natural Science Foundation of China (NSFC) [20774003]
- National Basic Research Program of China [2007CB9358002007CB935801]
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An amino acid-based dendron 1, synthesized and focally functionalized with p-nitrocinnamate, can self-assemble into fibrous network in common organic solvents at low concentration. The most remarkable character of the gel from 1 is photoresponse besides thermo-reversible response. Upon irradiation with UV light at 365 nm, gel to sol transition occurred resulting from the photodimerization of p-nitrocinnamate groups. On the other hand, when the obtained solution was further exposed to short wavelength of UV light at 254 nm, the gel re-formed because of the photocleavage reaction. (C) 2009 Elsevier Ltd. All rights reserved.
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