Encapsulating Pyrene in a Metal–Organic Zeolite for Optical Sensing of Molecular Oxygen

Pyrene is a good oxygen-sensitive probe with high fluorescence quantum yield, suitable sensitivity, and high photostability when dispersed in gas-permeable organic polymers, but it is a carcinogen and environmental pollutant and tends to aggregate and/or evaporate at high temperature/low pressure. I...

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Bibliographic Details
Published in:Chemistry of materials 2015-12, Vol.27 (24), p.8255-8260
Main Authors: Ye, Jia-Wen, Zhou, Hao-Long, Liu, Si-Yang, Cheng, Xiao-Ning, Lin, Rui-Biao, Qi, Xiao-Lin, Zhang, Jie-Peng, Chen, Xiao-Ming
Format: Article
Language:English
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Summary:Pyrene is a good oxygen-sensitive probe with high fluorescence quantum yield, suitable sensitivity, and high photostability when dispersed in gas-permeable organic polymers, but it is a carcinogen and environmental pollutant and tends to aggregate and/or evaporate at high temperature/low pressure. In this work, we show that pyrene can be easily and firmly encapsulated in a metal–organic zeolite SOD-[Zn­(mim)2] (Hmim = 2-methylimidazole, MAF-4 or ZIF-8) via an in situ loading strategy, giving fluorescence O2-sensing materials not only with fast response, high photostability, and tunable sensitivity but also free of pyrene aggregation/leak and interference by other quenchers. Moreover, these host–guest inclusion crystals can be easily fabricated as thin film sensors and aerodynamic coatings.
ISSN:0897-4756
1520-5002
DOI:10.1021/acs.chemmater.5b03955