ESIPT triggered TICT of an Al3+ fluorescence sensor and its sensing mechanism

被引：11

作者：

Sun, Bingqing ^{[1
]}

Liu, Lei ^{[2
,3
]}

Liu, Wei ^{[4
]}

Meng, Fande ^{[1
]}

Huang, Qiuxiang ^{[3
]}

机构：

[1] Anhui Sci & Technol Univ, Coll Resource & Environm, Hefei, Anhui, Peoples R China

[2] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian, Peoples R China

[3] Anhui Sci & Technol Univ, Coll Chem & Mat Engn, Hefei, Anhui, Peoples R China

[4] Nan Jing Mai Er Gu Decorat Co, Nanjing, Jiangsu, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2020年 / 223卷

关键词：

TICT; ESIPT; Al3+ sensing; Excited states; ZETA VALENCE QUALITY; ALUMINUM ACCUMULATION; BASIS-SETS; CHARGE; PROBE; COUMARIN;

D O I：

10.1016/j.jlumin.2020.117203

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Excited state intramolecular proton transfer (ESIPT) and twisted intramolecular charge transfer (TICT) play fundamental roles during the excited state dynamics of dyes and fluorescent sensors. In this contribution, the ESIPT process is demonstrated to trigger the TICT process during the photo-physical process of a turn-on Al3+ sensor. The non-emissive TICT state can be facilely reached after the photo excitation and the ESIPT process, which quenches the fluorescence of the sensor. Al3+ is demonstrated to coordinate with the sensor and lock the twisted of the sensor, which eliminates the TICT state and turns on the fluorescence. Selective of the sensor is also revealed by study the interaction and electron transfer between the sensor and Cr3+.

引用

页数：8

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