01418nas a2200181   4500008004100000245009400041210006900135260000800204300001600212520077500228100001801003700001801021700002601039700001601065700002301081700001701104856011501121       2011                        eng d00aZnII-2,2?:6?,2?-terpyridine-based complex as fluorescent chemosensor for PPi, AMP and ADP0 aZnII2262terpyridinebased complex as fluorescent chemosensor for   cJUL  a3050–30583 a<p>A new ZnII–2,2′:6′,2″-terpyridine complex, derivatized with a coumarin moiety (L1Zn), acts as a fluorescent chemosensor for different biologically important phosphates like PPi, AMP and ADP in mixed aqueous media. Depending on the proportion of the aqueous fraction present in the solvent mixture, L1Zn shows a preference for different phosphate moieties at physiological pH. In an aqueous acetonitrile (2:3, v/v) medium this reagent shows a preference for AMP as compared to ADP, ATP and PPi. The binding affinities of L1Zn with different phosphate ions and associated shifts in the electronic spectra were rationalized by DFT calculations. Such an example of a receptor that is selective for AMP under physiological conditions is rare in the literature.</p>1 aDas, Priyadip1 aGhosh, Amrita1 aKesharwani, Manoj, K.1 aRamu, Vadde1 aGanguly, Bishwajit1 aDas, Amitava  uhttps://library.ncl.res.in/content/znii-2262-terpyridine-based-complex-fluorescent-chemosensor-ppi-amp-and-adp01794nas a2200193   4500008004100000245018400041210006900225260000800294300001600302490000700318520102100325100002201346700001801368700002301386700002401409700002001433700001701453856013001470       2011                        eng d00aZn(II)-cyclam based chromogenic sensors for recognition of atp in aqueous solution under physiological conditions and their application as viable staining agents for microorganism0 aZnIIcyclam based chromogenic sensors for recognition of atp in a  cMAR  a4162–41700 v503 a<p>Two chromogenic complexes, L.Zn (where L is (E)-4-((4-(1,4,8,11-tetraazacyclotetradecan-1-ylsulfonyl)phenyl)diazenyl)-N,N-dimethylaniline) and its [2]pseudorotaxane form (α-CD.L.Zn), were found to bind preferentially to adenosine triphosphate (ATP), among all other common anions and biologically important phosphate (AMP, ADP, pyrophosphate, and phosphate) ions in aqueous HEPES buffer medium of pH 7.2. Studies with live cell cultures of prokaryotic microbes revealed that binding of these two reagents to intercellular ATP, produced in situ, could be used in delineating the Gram-positive and the Gram-negative bacteria. More importantly, these dyes were found to be nontoxic to living microbes (eukaryotes and prokaryotes) and could be used for studying the cell growth dynamics. Binding to these two viable staining agents to intercellular ATP was also confirmed by spectroscopic studies on cell growth in the presence of different respiratory inhibitors that influence the intercellular ATP generation.</p>1 aMahato, Prasenjit1 aGhosh, Amrita1 aMishra, Sanjiv, K.1 aShrivastav, Anupama1 aMishra, Sandhya1 aDas, Amitava  uhttps://library.ncl.res.in/content/znii-cyclam-based-chromogenic-sensors-recognition-atp-aqueous-solution-under-physiological