Pyridine Detection Using Supramolecular Organic Frameworks Incorporating Cucurbit[10]uril.

A physical impregnation method is presented in this study, providing a facile approach to encapsulating functional guest molecules (GMs) into robust crystalline supramolecular organic frameworks incorporating cucurbit[10]uril (Q[10]-SOF). As Q[10]-SOF has high evaporated pyridine affinity under normal atmospheric pressure, pyridine molecules in this method were successfully encapsulated into the nanospace formed by GMs and Q[10]-SOF while retaining their crystal framework, morphology, and high stability. GMs@Q[10]-SOF solid materials were found to respond to pyridine, being suitable to be used as solid sensors. Notably, Q[10]-SOF loading with pyrene exhibited a unique response to pyridine along with dramatic fluorescence quenching; loading with dansyl chloride exhibited a unique response to pyridine along with significant fluorescence enhancement, having a quick response within 60 s. Our findings represent a critical advancement in the design of pyridine detection and adsorption for commercial gas identification and sensing.

Citation

Ming Liu, Lixia Chen, Peihui Shan, Chengjie Lian, Zenghui Zhang, Yunqian Zhang, Zhu Tao, Xin Xiao. Pyridine Detection Using Supramolecular Organic Frameworks Incorporating Cucurbit[10]uril. ACS applied materials & interfaces. 2021 Feb 17;13(6):7434-7442

PMID: 33554601

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