Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/xmlui/handle/100/14988
Title: Pyrophosphate Sensing by a Fluorescent Zn2+ Bound Triazole Linked Imino-Thiophenyl Conjugate of Calix[4]arene in HEPES Buffer Medium: Spectroscopy, Microscopy, and Cellular Studies
Authors: PATHAK, RK
TABBASUM, K
RAI, A
PANDA, D
RAO, CP
Issue Date: 2012
Publisher: AMER CHEMICAL SOC
Citation: ANALYTICAL CHEMISTRY, 84(11)5117-5123
Abstract: An in situ prepared Zn2+ complex of triazole linked iminothiophenyl conjugate of calix[4]arene, [ZnL], was demonstrated to be highly fluorescent in HEPES buffer solution. [ZnL] has been used as a chemo-sensing ensemble for the recognition of phosphates in general and pyrophosphates in particular among the eighteen different anions studied. The chemo-sensing behavior of the [ZnL] has been demonstrated through fluorescence, absorption, visual fluorescent color changes, ESI MS, and H-1 NMR titrations. Variations in the microstructural features of L, its zinc complex and the complex upon addition of PPi have been demonstrated through atomic force microscopy and transmission electron microscopy. Such studies have been extended to see the permeability of the conjugate into the He La cells by fluorescence microscopy. In accession, a reversible "write-read-erase-read" logic gate property of L has been demonstrated through a feedback loop in the presence of Zn2+ and PPi.
URI: http://dx.doi.org/10.1021/ac301009h
http://dspace.library.iitb.ac.in/jspui/handle/100/14988
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