Dinuclear Zinc(II) Macrocyclic Complex as Receptor for Selective Fluorescence Sensing of Pyrophosphate
作者： Lígia M. Mesquita , Vânia André , Catarina V. Esteves , Tiago Palmeira , Mário N. Berberan-Santos
DOI: 10.1021/ACS.INORGCHEM.5B02596
关键词: Pyrophosphate 、 Sodium borohydride 、 Zinc 、 Adenosine triphosphate 、 Chemistry 、 Adenosine diphosphate 、 Medicinal chemistry 、 Stereochemistry 、 Adenosine monophosphate 、 Fluorescence 、 Schiff base
摘要: A new diethylenetriamine-derived macrocycle known as L, bearing 2-methylquinoline arms and containing m-xylyl spacers, was prepared in good yield by a one-pot [2 + 2] Schiff base condensation procedure, followed reduction with sodium borohydride. Up to now this is the first hexaazamacrocycle appended fluorophore units. Single-crystal X-ray diffraction determination of dinuclear zinc(II) complex L showed that metal centers are located at about 7.20(2) from one another. This exhibits only weak fluorescence aqueous solution, but addition 1 equiv pyrophosphate (PPi) caused 21-fold enhancement intensity. The sensor response linear up value 10 μM HPPi3– has detection limit 300 nM. receptor behaves highly selective for other anions, including phosphate, phenylphosphate (PhP), adenosine monophosphate (AMP), diphosphate (ADP), triphosphate (ATP), failed induce any fluorescence...
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