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A Typical Metal‐Ion‐Responsive Color‐Tunable Emitting Insulated π‐Conjugated Polymer Film
Author(s) -
Hosomi Takuro,
Masai Hiroshi,
Fujihara Tetsuaki,
Tsuji Yasushi,
Terao Jun
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201603160
Subject(s) - luminescence , polymer , conjugated system , metal , metal ions in aqueous solution , bipyridine , materials science , photochemistry , solid state , ion , chemical engineering , chemistry , polymer chemistry , optoelectronics , organic chemistry , crystal structure , composite material , metallurgy , engineering
Abstract We report the synthesis of an insulated π‐conjugated polymer containing 2,2′‐bipyridine moieties as metal coordination sites. Metal coordination to the polymer enabled easy and reversible tuning of the luminescent color without changes to the main chain skeleton. The permethylated α‐cyclodextrin (PM α‐CD)‐based insulation structure allowed the metalated polymers to demonstrate efficient emission even in the solid state, with identical spectral shapes to the dilute solutions. In addition, the coordination ability of the metal‐free polymer was maintained in the solid state, resulting in reversible changes in the luminescent color in response to the metal ions. The synthesized polymer is expected to be suitable for application in recyclable luminescent sensors to distinguish different metal ions.