A "turn-on" fluorescent chemosensor for the meticulous detection of gallium (III) ion and its use in live cell imaging, logic gates and keypad locks

被引：12

作者：

Rasin, Puthiyavalappil ^{[1
]}

Haribabu, Jebiti ^{[2
]}

Malappuram, Kailas Mahipal ^{[1
]}

Manakkadan, Vipin ^{[1
]}

Palakkeezhillam, Vishnunarayanan Namboothiri Vadakkedathu ^{[1
]}

Echeverria, Cesar ^{[2
]}

Sreekanth, Anandaram ^{[1
]}

机构：

[1] Natl Inst Technol Tiruchirappalli, Dept Chem, Tiruchirappalli 620015, Tamil Nadu, India

[2] Univ Atacama, Fac Med, Los Carreras 1579, Copiapo 1532502, Chile

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2023年 / 437卷

关键词：

Chemosensor; Live cell image; Logic gates; MEP; Molecular keypad; SEQUENTIAL RECOGNITION; TOXICITY; CRYSTAL; SENSOR; WATER; GA3+;

D O I：

10.1016/j.jphotochem.2022.114493

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A pyrene-based fluorescence sensor PyAP [(Z)-2-((pyren-1-ylmethylene)amino)phenol] was developed by a simple Schiff base reaction. In the presence of other metal ions, the PyAP fluorescence chemosensor recognizes only Ga3+ ions. Additionally, PyAP showed good selectivity and sensitivity for the detection of Ga3+. In a solution containing DMSO/H2O (2:8, v/v) the binding constant for PyAP with Ga3+ was 7.03 x 104 M-1, and the detection limits were 3.35 nM. The quantum yield for PyAP and PyAP-Ga3+ was calculated and found to be 0.0006 and 0.227. This chemosensor PyAP was based on the photo-induced electron transfer (PET) mechanism, which was further validated by DFT studies. The capacity of PyAP to specifically detect Ga3+ in living cells and its cell permeability were both validated by live cell imaging in T24 cells. Finally, the chemosensor PyAP was offered applications for molecular logic gates and keypad locks.

引用

页数：13

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