期刊
ORGANIC LETTERS
卷 11, 期 4, 页码 795-798出版社
AMER CHEMICAL SOC
DOI: 10.1021/ol802537c
关键词
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资金
- National Science Foundation of China [20571043, 20631020, 90713001, 20871066, 20721002]
- Natural Science Foundation of Jiangsu Provence [BK2008015]
- High Performance Computing Center of Nanjing University
A fluorescent Zn2+ sensor based on the 2-(2'-pyridinyl)benzoimidazole (2-PBI) fluorophore has been devised by incorporation with a Zn2+ ionophore, bis(pyridin-2-ylmethyl)amine. The sensor (PBITA) demonstrates a Zn2+-specific emission shift and enhancement with a 1:1 binding ratio. Due to the Zn2+-induced coplanation of 2-PBI via reversion/rotation, PBITA is shown to behave as a ratiometric sensor. The intracellular Zn2+ imaging ability of the sensor has been tested in HeLa cells using a confocal microscope.
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