Switchable and adjustable AIE activity of Pt(II) complexes achieving swift-responding and highly sensitive oxygen sensing

被引：30
作者：
Di, Ling [1 ]
Xia, Zhengqiang [2 ]
Wang, Honghao [1 ]
Xing, Yang [1 ]
Yang, Zhanxu [1 ]
机构：
[1] Liaoning Shihua Univ, Sch Petrochem Engn, Fushun 113001, Peoples R China
[2] Northwest Univ, Coll Chem & Mat Sci, Key Lab Synthet & Nat Funct Mol Chem, Minist Educ, Xian 710127, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2021年 / 326卷
基金：
中国博士后科学基金;
关键词：
Aggregation-induced emission; Pt(II) complexes; Phosphorescence; Rotation activity; Oxygen sensing; AGGREGATION-INDUCED EMISSION; CYCLOMETALATED PLATINUM(II) COMPLEXES; INDUCED PHOSPHORESCENT EMISSION; CATIONIC IR(III) PHOSPHORS; EMITTERS; SENSORS; DESIGN;
D O I：
10.1016/j.snb.2020.128987
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
AIE-active luminogens are attractive for bioimaging, sensors, and optical detections. However, controllably switching and adjusting the AIE activity of luminogens in aqueous media to perform the best of AIE performance under appropriate water fraction remains a challenge. Herein, we report the first case of switchable and adjustable AIE activity based on Pt(II) complexes. The AIE activity of Pt(II) complexes in aqueous media can be flexibly switched and adjusted via finely tuning the rotation activity of the substituents. And the rotation activity of the substituents have been experimentally confirmed by the luminescent lifetimes and theoretically verified by the dipole moments of Pt(II) complexes. Furthermore, luminescent oxygen sensing films were constructed by combining the AIE-active Pt(II) complexes with commercially available, low-cost ethyl cellulose (EC). With the attenuation of EC film thickness, swift-responding quenching/recovering cycles (7.7 s) of the PtTPA-EC(N10) oxygen sensing film were demonstrated. And the controllable AIE property of Pt(II) complexes can effectively improve the oxygen sensitivity and the homogeneity of oxygen sensing films.
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页数：10
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