作者:Ikuma Ohshiro、Masashi Ikegami、Yoshihiro Shinohara、Yoshinobu Nishimura、Tatsuo Arai
DOI:10.1246/bcsj.80.747
日期:2007.4.15
The synthesis and photophysical properties of a fluorescent anthracene–urea derivative, which can associate with anions, such as acetate or phosphate, by hydrogen-bonding, are reported. A new anthracene derivative bearing phenylurea group at the 9-position of anthracene, 1-anthracen-9-yl-3-phenylurea, (9PUA) was prepared. 9PUA was found to exhibit strong selectivity in relation to anions, some of which showed a remarkable change in emission. 9PUA had a monomer emission maximum at 450 nm, and the monomer emission was quenched to give a new emission with a maximum at 580 nm on the addition of acetate anion. The emission at 580 nm was assigned to a tautomer form of 9PUA generated by intermolecular proton transfer as a result of an excited-state reaction with acetate anion.
报道了荧光蒽-脲衍生物的合成和光物理性质,该衍生物可以通过氢键与阴离子(例如乙酸盐或磷酸盐)结合。制备了一种在蒽9位带有苯基脲基团的新型蒽衍生物1-蒽-9-基-3-苯基脲(9PUA)。 9PUA 对阴离子表现出很强的选择性,其中一些阴离子的发射量发生了显着的变化。 9PUA 在 450 nm 处具有单体发射最大值,并且在添加乙酸根阴离子后,单体发射被猝灭以产生在 580 nm 处具有最大值的新发射。 580 nm 处的发射被归属于 9PUA 的互变异构体形式,该互变异构体形式是由于与乙酸根阴离子发生激发态反应而通过分子间质子转移产生的。