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作 者:Jie Wang You Li Zi-juan Hai Yang-yang Yan Zan Hua Zhong-kai Wang Guang Yang 王婕;李由;海子娟;严阳阳;华赞;汪钟凯;杨光(安徽农业大学,生物质分子工程中心,合肥230036;安徽大学物质科学与信息技术研究院,合肥230060;聚合物分子工程国家重点实验室(复旦大学),上海200433)
机构地区:[1]Biomass Molecular Engineering Center,School of Forestry and Landscape Architecture,Anhui Agricultural University,Hefei 230036,China [2]Institutes of Physical Science and Information Technology,Anhui University,Hefei 230601,China [3]The State Key Laboratory of Molecular Engineering of Polymers(Fudan University),Shanghai 200433,China
出 处:《Chinese Journal of Chemical Physics》2022年第5期774-782,I0023-I0029,I0012,共17页化学物理学报(英文)
基 金:supported by Anhui Province Natural Science Funds(2008085QE209);K2020-03 from the State Key Laboratory of Molecular Engineering of Polymers(Fudan University)。
摘 要:Dimension-controllable supramolecular organic frameworks(SOFs)with aggregation-enhanced fluorescence are hierarchically fabricated through the host-guest interactions of cucurbit[8]uril(CB[8])and coumarin-modified tetraphenylethylene derivatives(TPEC).The three-dimensional layered SOFs could be constructed from the further stacking of two-dimensional mono-layered structures via simply regulating the self-assembly conditions including the culturing time and concentration.Upon light irradiation under the wavelength of 365 nm,the photodimerization of coumarin moieties occurred,which resulted in the transformation of the resultant TPECn/CB[8]4n two-dimensional SOFs into robust covalently-connected 2D polymers with molecular thickness.Interestingly,the supramolecular system of TPEC/CB[8]exhibited intriguing multicolor fluorescence emission from yellow to blue in the time range of 0-24 h at 365 nm irradiation,possessing potential applicability for photochromic fluorescence ink.
关 键 词:Supramolecular organic framework Host-guest interaction Dimension-controllability Tunable fluorescence Photo-responsiveness
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