Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 141, Issue 18, Pages 7385-7390Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.9b01056
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Funding
- National Natural Science Foundation of China [21774007, 21574009]
- Fundamental Research Funds for the Central Universities [PT1811, ZY1906]
- Research projects on biomedical transformation of China-Japan Friendship Hospital [PYBZ1822]
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Studies on the azobenzene derivative based phase transitions mostly rely on photoisomerization, which require a long time to spontaneously revert back. Here we show a photothermal-driven solid-to-liquid transition and fast reversion of azobenzene derivatives. Owing to the aggregation of suitably substituted azobenzenes, solid-to-liquid transitions can be induced by photothermal effects under irradiation with green light. The liquid-state azobenzene derivatives spontaneously solidify again within 2 min due to heat release in a purely physical fashion. One thus obtains a perfectly reversible adhesion with a strength as high as that of commercial materials. Our work affords a novel concept to construct reversible adhesives via phase transitions of organic compounds induced by light.
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