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Experimental and Theoretical Studies on a Simple S-S-Bridged Dimeric Schiff Base: Selective Chromo-Fluorogenic Chemosensor for Nanomolar Detection of Fe2+ & Al3+ Ions and Its Varied Applications
被引:72
作者:
David, Charles Immanuel
[2
]
Bhuvanesh, Nanjan
[2
]
Jayaraj, Haritha
[2
]
Thamilselvan, Annadurai
[3
]
Devi, Duraisamy Parimala
[1
]
Abiram, Angamuthu
[1
]
Prabhu, Jeyaraj
[2
]
Nandhakumar, Raju
[2
]
机构:
[1] Karunya Inst Technol & Sci Deemed Be Univ, Dept Phys, Coimbatore 641114, Tamil Nadu, India
[2] Karunya Inst Technol & Sci Deemed Be Univ, Dept Chem, Coimbatore 641114, Tamil Nadu, India
[3] CSIR, Electro Organ Div, Cent Electrochem Res Inst, CECRI, Karaikkudi 630003, Tamil Nadu, India
来源:
关键词:
FLUORESCENCE TURN-ON;
MOLECULAR-STRUCTURE;
LIVING CELLS;
COLORIMETRIC SENSOR;
ALZHEIMERS-DISEASE;
REVERSIBLE SENSOR;
IRON-METABOLISM;
AQUEOUS-MEDIA;
ALUMINUM IONS;
LUMO ANALYSIS;
D O I:
10.1021/acsomega.9b04294
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
A simple S-S (disulfide)-bridged dimeric Schiff base probe, L, has been designed, synthesized, and successfully characterized for the specific recognition of Al3+ and Fe2+ ions as fluorometric and colorimetric "turn-on" responses in a dimethylformamide (DMF)-H2O solvent mixture, respectively. The probe L and each metal ion bind through a 1:1 complex stoichiometry, and the plausible sensing mechanism is proposed based on the inhibition of the photoinduced electron transfer process (PET). The reversible chemosensor L showed high sensitivity toward Al3+ and Fe2+ ions, which was analyzed by fluorescence and UV-vis spectroscopy techniques up to nanomolar detection limits, 38.26 X 10(-9) and 17.54 x 10(-9) M, respectively. These experimental details were advocated by density functional theory (DFT) calculations. The practical utility of the chemosensor L was further demonstrated in electrochemical sensing, in vitro antimicrobial activity, molecular logic gate function, and quantification of the trace amount of Al3+ and Fe2+ ions in real water samples.
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页码:3055 / 3072
页数:18
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