Fluorescent behavior of 2-(3,4,5,6-tetrafluoro-2-hydroxyphenyl)imidazo-[1,2-<i>a</i>]pyridine in the presence of metal perchlorate
作者:Kiyoshi Tanaka、Tohru Kurushima、Satoru Iwata、Syunsuke Shimada
DOI:10.1002/jhet.5570440204
日期:2007.3
2-(3,4,5,6-Tetrafluoro-2-hydroxyphenyl)imidazo[1,2-a]pyridine (1) emits long wavelength light around 540 nm both in polar and in nonpolar solvents. Zn2+ perchlorate in acetonitrile causes the intermediate wavelength emission around 430 nm, which is ascribed to the species where the imidazole nitrogen atom and the phenolate oxygen atom bridge Zn2+. In the presence of Hg2+ and Al3+ perchlorates, short
2-(3,4,5,6-四氟-2-羟基苯基)咪唑并[1,2- a ]吡啶(1)在极性和非极性溶剂中均发出约540 nm的长波长光。乙腈中的高氯酸Zn 2+引起大约430 nm的中间波长发射,这归因于咪唑氮原子和酚盐氧原子桥接Zn 2+的物质。在Hg 2+和Al 3+高氯酸盐的存在下,370 nm附近的短波发射强烈增加,这种荧光增强不是Hg 2+和Al 3+与1的配位,而是由于Hg 2+和Al 3+的盐的形成。高氯酸1。