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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Published inAnalytical chemistry (Washington) Vol. 87; no. 18; p. 9344
Main Authors Nehra, Anita, Yarramala, Deepthi S, Hinge, Vijaya Kumar, Samanta, Kushal, Rao, Chebrolu Pulla
Format Journal Article
LanguageEnglish
Published Washington American Chemical Society 15.09.2015
Subjects
Fluorescence
Microscopy
Phosphates
Spectrum analysis
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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