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

Puthiyavalappil Rasin, Jebiti Haribabu, Kailas Mahipal Malappuram, Vipin Manakkadan, Vishnunarayanan Namboothiri Vadakkedathu Palakkeezhillam, Cesar Echeverria, Anandaram Sreekanth

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16 Citas (Scopus)

Resumen

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 × 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.

Idioma originalInglés
Número de artículo114493
PublicaciónJournal of Photochemistry and Photobiology A: Chemistry
Volumen437
DOI
EstadoPublicada - 1 mar. 2023
Publicado de forma externa

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