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Hg 2+ ‐Induced In Situ Generated Radical Cation of ( S )‐BINOL‐Based Polymer for Highly Enantioselective Recognition of Phenylalaninol
Author(s) -
Jiao Jiemin,
Li Fei,
Zhang Shuwei,
Quan Yiwu,
Zheng Wenhua,
Cheng Yixiang,
Zhu Chengjian
Publication year - 2014
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201400248
Subject(s) - enantioselective synthesis , moiety , aniline , enantiomer , nucleophile , fluorescence , quenching (fluorescence) , chemistry , polymer , combinatorial chemistry , molecule , photochemistry , polymer chemistry , stereochemistry , organic chemistry , catalysis , physics , quantum mechanics
Phenylalaninol enantiomers are one of the most important chiral compounds due to its presence in biologically active molecules and pharmaceutical products. In this paper, a novel chiral fluorescence polymer sensor incorporating ( S )‐BINOL and oligomeric aniline via a nucleophilic addition–elimination reaction is designed and synthesized. Polymer sensor exhibits “turn‐off” fluorescence quenching response upon the addition of Hg 2+ , and “turn‐on” moderate fluorescence enhancement behavior towards phenylalaninol enantiomers. Meanwhile, this kind of ( S )‐BINOL‐based polymer sensor can exhibit highly selective enantioselective recognition response towards ( L )‐phenylalaninol upon the addition of Hg 2+ and the value of ef can reach as high as 5.4, which can be attributed to the formation of in situ generated radical cation arisen from oligomeric aniline moiety by Hg 2+ induction.