Iodine Controlled Pillar[5]arene-Based Multiresponsive Supramolecular Polymer for Fluorescence Detection of Cyanide, Mercury, and Cysteine

• Published in: Macromolecules Vol. 50; no. 20; pp. 7863 - 7871
• Main Authors: Lin, Qi, Zhong, Kai-Peng, Zhu, Jin-Hui, Ding, Lan, Su, Jun-Xia, Yao, Hong, Wei, Tai-Bao, Zhang, You-Ming
• Format: Journal Article
• Language: English
• Published: American Chemical Society 24.10.2017
• ISSN: 0024-9297; 1520-5835
• DOI: 10.1021/acs.macromol.7b01835

A simple and efficient approach to endow the controllable multi-stimuli-responsive property for the supramolecular polymer was successfully developed by rationally introducing iodine into a novel naphthalimide-functionalized pillar[5]­arene-based supramolecular polymer (PNA⊃GBP). Interestingly, by introducing iodine into the supramolecular polymer PNA⊃GBP, the iodine could not only control the optical properties and self-assembly states of PNA⊃GBP via electronic donor–acceptor effect but also control the molecular recognition properties by competitive redox reaction. Benefiting from these excellent iodine controlled multiresponse properties, the PNA⊃GBP showed selective fluorescent response for cyanide, cysteine, and mercury in supramolecular polymer gels, water solutions, and living cells with high sensitivities. The supramolecular polymer PNA⊃GBP could act as a novel smart material for selective detection CN–, Hg2+, and l-Cys.