作者：?Jie Wang, You Lia, Zi-juan Hai, Yang-yang Yan, Zan Hua, Zhong-kai Wang, Guang Yanga?
关键字：Supramolecular organic frameworks, Host-guest interactions, Dimensioncontrollable, Tunable fluorescence, Photo-responsive
论文来源：期刊
具体来源：CHINESE JOURNAL OF CHEMICAL PHYSICS
发表时间：2021年

Dimension-controllable supramolecular organic frameworks (SOFs) with aggregation-enhanced

flfluorescence are hierarchically fabricated through the host-guest interactions of CB[8] and coumarin modifified 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 TPECn/CB[8]4n exhibited intriguing multicolor flfluorescence emission from yellow to blue in the time range of 0?24 h at 365 nm irradiation, possessing potential applicability for photochromic flfluorescence ink.