Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 136, Issue 20, Pages 7241-7244Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja502643p
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Funding
- National University of Singapore (NUS) [R-279-000-369-133]
- Singapore Ministry of Education [MOE AcRF Tier 1 R-279-000-410-112]
- Economic Development Board (Singapore-Peking-Oxford Research Enterprise) [COY-15-EWI-RCFSA/N197-1]
- Singapore Berkeley Research Institute for Sustainable Energy [R-279-000-393-592]
- Research Grants Council of Hong Kong [604913]
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We report a 2D layered metal-organic framework (MOF) with wide channels named NUS-1 and its activated analogue NUS-la composed of Zn4O-like secondary building units and tetraphenylethene (TPE)-based ligand 4,4'-(2,2-diphenylethene-1,1-diyl)dibenzoic acid. Due to its special structure, NUS-la 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.
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