Differentiating Phosphates by an Mg^sup 2+^ Complex of the Conjugate of Calix[4]arene via the Formation of Ternary Species and Causing Changes in the Aggregation: Spectroscopy, Microscopy, and Computational Modeling

A phenylene diimine capped conjugate of 1,3-calix[4]arene (L) was synthesized and characterized, and its Mg... complex has been isolated and characterized. The chemo sensing ensemble of Mg... bound L provides distinguishable features of response toward phosphates, viz., HPO..., P...O..., and AMP......

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Bibliographic Details
Published in:Analytical chemistry (Washington) 2015-09, Vol.87 (18), p.9344
Main Authors: Nehra, Anita, Yarramala, Deepthi S, Hinge, Vijaya Kumar, Samanta, Kushal, Rao, Chebrolu Pulla
Format: Article
Language:English
Subjects:
Fluorescence
Microscopy
Phosphates
Spectrum analysis
Online Access:Get full text
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Summary:A phenylene diimine capped conjugate of 1,3-calix[4]arene (L) was synthesized and characterized, and its Mg... complex has been isolated and characterized. The chemo sensing ensemble of Mg... bound L provides distinguishable features of response toward phosphates, viz., HPO..., P...O..., and AMP... (Set A) and H...PO..., ATP..., and ADP... (Set B). While the Set A shows the formation of ternary complex, the Set B does not exhibit any intermediate complex, but both show the release of Mg... and L at different equivalents. The structures of ...L + Mg... and its phosphate bound ternary complexes have been established by computational calculations, and the corresponding results agree well with the experimental ones. The microscopy studies show an aggregation-disaggregation phenomenon in the presence of different equivalents of phosphates in both of the sets. Using the fluorescence data, an INHIBIT logic gate has been built. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0003-2700
1520-6882