writer：Tingting Liu, Shuodong Wang, Yanran Li, Hongxia Yan, and Wei Tian*
keywords：host–guest interactions, self-assembly, sensors, supramolecular polymers, vesicles
source：期刊
specific source：Chem. Eur. J. 2018, 24, 4239-4244
Issue time：2018年

Chemosensors (CSs) with dynamically tunable detection ranges have important significance for their expansion in practical applications; however, most CSs possess an unchangeable detection limit. In this work, we report the first example of a supramolecular polymer vesicle (SPV) chemosensor with a dynamically tunable detection range. SPVs containing porphyrin (PP) moieties and β-cyclodextrin (β-CD)/azobenzene (Azo) host–guest interactions were first constructed. The obtained SPVs were used to detect Zn²⁺ with a high selectivity and sensitivity over a wide detection limit range of 8.67x10^-9 to 1.99x10^-11 under UV light irradiation. The corresponding sensing mechanism was attributed to the synergistic effects of the triple noncovalent interactions, including the metalligand coordination of PP/Zn²⁺ and the double host–guest interactions of β-CD/Azo and β-CD/PP.

全文链接：

https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.201705162