Bend and twist intramolecular charge transfer and emission for selective metal ion sensing

Zn super(2+) and Cu super(2+) complexation of cyclam-triazolyl-naphthalimide fluoro-ionophores lead to increased and decreased fluorescence respectively. The differences between the two metals are accounted for by their Lewis acid and base properties. This difference means the system can be describe...

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Published in:Optical materials express 2015-11, Vol.5 (11), p.2675-2681
Main Authors: Canning, John, Ast, Sandra, Hossain, Md. Arafat, Chan, Hazel, Rutledge, Peter J., Jamalipour, Abbas
Format: Article
Language:English
Subjects:
Charge transfer
Complexation
Detection
Diodes
Emission
Evolution
Fluorescence
Lewis acid
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creator Canning, John
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description Zn super(2+) and Cu super(2+) complexation of cyclam-triazolyl-naphthalimide fluoro-ionophores lead to increased and decreased fluorescence respectively. The differences between the two metals are accounted for by their Lewis acid and base properties. This difference means the system can be described as an optical diode with characteristics that suggest measurable differences in fluorescence rise and decay times for the mechanical suppression of bend- and/or twist-induced emissions from intramolecular charge transfer. Different fluorescence evolution profiles are observed offering a new way of distinguishing metal ions for applications in biomedical and environmental sensing.
doi_str_mv 10.1364/OME.5.002675
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subjects Charge transfer
Complexation
Detection
Diodes
Emission
Evolution
Fluorescence
Lewis acid
title Bend and twist intramolecular charge transfer and emission for selective metal ion sensing
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