Two-Dimensional Metal鈥揙rganic Framework with Wide Channels and Responsive Turn-On Fluorescence for the Chemical Sensing of Volatile Organic Compounds
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- 作者：Mei Zhang ; Guangxue Feng ; Zhegang Song ; Yu-Peng Zhou ; Hsiu-Yi Chao ; Daqiang Yuan ; Tristan T. Y. Tan ; Zhengang Guo ; Zhigang Hu ; Ben Zhong Tang ; Bin Liu ; Dan Zhao
- 刊名：Journal of the American Chemical Society
- 出版年：2014
- 出版时间：May 21, 2014
- 年：2014
- 卷：136
- 期：20
- 页码：7241-7244
- 全文大小：269K
- 年卷期：v.136,no.20(May 21, 2014)
- ISSN：1520-5126
文摘
We report a 2D layered metal鈥搊rganic framework (MOF) with wide channels named NUS-1 and its activated analogue NUS-1a composed of Zn4O-like secondary building units and tetraphenylethene (TPE)-based ligand 4,4鈥?(2,2-diphenylethene-1,1-diyl)dibenzoic acid. Due to its special structure, NUS-1a exhibits unprecedented gas sorption behavior, glass-transition-like phase transition under cryogenic conditions, and responsive turn-on fluorescence to various volatile organic compounds. Our approach using angular ligand containing partially fixed TPE units paves a way toward highly porous MOFs with fluorescence turn-on response that will find wide applications in chemical sensing.