Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/xmlui/handle/100/17880
Title: Differentiating Phosphates by an Mg2+ 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
Authors: NEHRA, A
YARRAMALA, DS
HINGE, VK
SAMANTA, K
RAO, CP
Keywords: Lower Rim
Inorganic Pyrophosphate
Receptors
Zn2+
Recognition
Issue Date: 2015
Publisher: AMER CHEMICAL SOC
Citation: ANALYTICAL CHEMISTRY, 87(18)9344-9351
Abstract: A phenylene diimine capped conjugate of 1,3-calix[4]arene (L) was synthesized and characterized, and its Mg2+ complex has been isolated and characterized. The chemo sensing ensemble of Mg2+ bound L provides distinguishable features of response toward phosphates, viz., HPO42-, P2O74-, and AMP(2-) (Set A) and H2PO4-, ATP(2-), and ADP(2-) (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 Mg2+ and L at different equivalents. The structures of {L + Mg2+} 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.
URI: http://dx.doi.org/10.1021/acs.analchem.5b02667
http://dspace.library.iitb.ac.in/jspui/handle/100/17880
ISSN: 0003-2700
1520-6882
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