Aza-crown ether-core substituted naphthalene diimide fluorescence “turn-on” probe for selective detection of Ca^sup 2

We describe the design, synthesis and characterisation of an optical and colorimetric sensor based on aza-crown ether-substituted naphthalene diimide (NDI), which demonstrates a remarkable selectivity and optical response toward calcium (Ca2+) over other cations (Mn2+, Ba2+, Ni2+, K+, Na+, Mg2+, Fe2...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2017-06, Vol.B244, p.854
Main Authors: Hughes, William, Rananaware, Anushri, La, Duong Duc, Jones, Lathe A, Bhargava, Suresh, Bhosale, Sheshanath V
Format: Article
Language:English
Subjects:
Calcium
Calcium ions
Chemical compounds
Chemical synthesis
Colorimetry
Copper
Crown ethers
Diimide
Fluorescence
Inspection
Naphthalene
Nondestructive testing
Organic chemistry
Selective binding
Sensors
Substitutes
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Summary:We describe the design, synthesis and characterisation of an optical and colorimetric sensor based on aza-crown ether-substituted naphthalene diimide (NDI), which demonstrates a remarkable selectivity and optical response toward calcium (Ca2+) over other cations (Mn2+, Ba2+, Ni2+, K+, Na+, Mg2+, Fe2+, and Cu2+). The key to the development of this sensor is the identification of a chemically very stable, crown-ether containing, calcium selective ionophore, coupled with an NDI fluorophore having the correct spectral and turn-on fluorescence. The UV–vis absorption, fluorescence, cyclic voltammetry (CV) and naked eye-detection clearly support selective binding of the Ca2+ ion.
ISSN:0925-4005
1873-3077