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A Novel Polymeric Chemosensor: Dual Colorimetric Detection of Metal Ions Through Click Synthesis
Author(s) -
Li Yongrong,
Ashizawa Minoru,
Uchida Satoshi,
Michinobu Tsuyoshi
Publication year - 2011
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.201100397
Subject(s) - bathochromic shift , chromophore , metal ions in aqueous solution , naked eye , acceptor , ion , photochemistry , metal , click chemistry , chemistry , atom (system on chip) , polystyrene , derivative (finance) , materials science , polymer chemistry , organic chemistry , fluorescence , optics , polymer , physics , chromatography , detection limit , computer science , financial economics , economics , embedded system , condensed matter physics
A highly colored polystyrene derivative bearing side chain chromophores composed of dialkylanilino donor and cyano‐based acceptor groups, prepared by atom‐economic click postfunctionalization, displays the dual colorimetric detection behavior of several metal ions based on the specific interactions with different nitrogen atoms. Hard to borderline metal ions, such as Fe 3+ , Fe 2+ , and Sn 2+ , are always recognized by the dialkylanilino nitrogen atom, resulting in a decrease in the charge‐transfer (CT) band intensity of the donor–acceptor chromophores. On the other hand, the recognition site of a soft metal ion of Ag + is the cyano nitrogen atom due to the readily formed multivalent coordination, which produces a bathochromic shift of the CT band.