Journal
CHINESE JOURNAL OF CHEMISTRY
Volume 35, Issue 12, Pages 1829-1834Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cjoc.201700388
Keywords
pyrene; organogel; fluorescence; fiber; photoisomerization
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Funding
- Natural Science Foundation of Jilin Province [20170101112JC]
- Project 985-Automotive Engineering of Jilin University
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A new simple pyrene-substituted acylhydrazone derivative, 4-(3,4-dioctyloxy) phenyl-1-pyrene acylhydrazone (PAH-8), was designed and synthesized. The PAH-8 can form thermo-reversible organogel in DMSO, and shows gelation-induced enhanced fluorescence emission. Xerogel exhibits ribbon-like fibrous aggregates with widths of 0.5-1 m. The PAH-8 organogel indicates photo-responsive behaviors due to the trans-cis isomerizations of -C=N- bond upon exposure to visible or UV light. Upon visible light irradiation, the partial trans-cis isomerization of the -C=N- bond causes the fiber morphology to disappear, resulting in gel-sol transition, whereas the PAH-8 organogel exhibits few photoisomerizations from trans to cis transition without breakage of the gel state upon UV light irradiation.
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