Dimension-Controllable and Photo-Responsive Supramolecular Organic Framworks through Cucurbit[8]uril-based Self-Assembly  

利用主客体作用构建结构可控以及具有光响应的超分子有机框架及其荧光性能调控

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 

分 类 号：O641.3[理学—物理化学]