Title
A Chiral Polymer as Chromo-Fluorescence and CD Response Sensor for Specific Recognition of Fluoride
Author
Jianwei Bai, Hongyan Yin, Yunan Zhang, Chunhong Zhang, Lijia Liu, Xiaodong Xu
Year
2016
Journal
European Polymer Journal
Abstract
A new kind of polymeric chemosensor containing chiral phenylglycine and 1-phenethylamine moieties in the side chain was synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization, which can guarantee controllable molecular weight, narrow molecular weight distribution, and precise polymer structure. As a chemosensor, the resulting polymers showed UV-vis and fluorescence spectra changed upon addition of F- relative to other anions including Cl-, Br-, HSO4-, AcO-, NO3-, H2PO4-, and N3-. When F- was added at high concentrations, the polymer gave detectable color change from colorless to yellow, which was attributed to the deprotonation process of the acylamino N-H group and the mechanism was supported by the 1H NMR titration. Furthermore, the addition of F- also can lead to a most pronounced change of CD spectra of the chiral polymer, indicating this kind chiral sensor can also be used as a probe for selective recognition of F- based on CD spectra.
Instrument
J-815
Keywords
Circular dichroism, Polymers, Chemical stability, Materials