title: Photostable ester-substituted bis-cyclometalated cationic iridium(III) complexes for continuous monitoring of oxygen.
abstract: Three bis-cyclometalated cationic Ir(iii) complexes , and with an ester substituent at the 4-position of the phenyl ring on the 2-phenylpyridine (ppy) have been synthesized and fully characterized. The emission maxima of ester-substituted Ir(iii) complexes show a notable blue-shift compared to the parent complex [Ir(ppy)2(phen)](+)PF6(-) (phen = 1,10-phenanthroline). The influence of an ester group on the photoelectric properties of the Ir(iii) complexes has been investigated systematically. The oxygen sensing films prepared from ethyl cellulose immobilized with Ir(iii) complexes exhibit excellent operational stability, high photostability and a quick response to oxygen. show extended luminescence lifetimes relative to , and display better sensitivity to changes in oxygen partial pressure.
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, Ling gong Road 2, Dalian 116024, China. cliu@dlut.edu.cn.
authors.forename: Chun
authors.initials: C
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, Ling gong Road 2, Dalian 116024, China. cliu@dlut.edu.cn.
authors.forename: Hongcui
authors.initials: H
authors.lastname: Yu
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, Ling gong Road 2, Dalian 116024, China. cliu@dlut.edu.cn.
authors.forename: Yang
authors.initials: Y
authors.lastname: Xing
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, Ling gong Road 2, Dalian 116024, China. cliu@dlut.edu.cn.
authors.forename: Zhanming
authors.initials: Z
authors.lastname: Gao
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, Ling gong Road 2, Dalian 116024, China. cliu@dlut.edu.cn.
authors.forename: Zilin
authors.initials: Z
authors.lastname: Jin