Intense fluorescence of 1-aryl-2,3,4,5-tetraphenylphosphole oxides in the crystalline state
作者:Aiko Fukazawa、Yasunori Ichihashi、Shigehiro Yamaguchi
DOI:10.1039/c0nj00155d
日期:——
A series of 2,3,4,5-tetraphenylphosphole oxides with various aryl groups on the phosphorus atoms were synthesized and their fluorescence properties in the crystalline state were investigated. Some of these compounds showed an intense fluorescence with the quantum yields of 0.75–0.91. These intense emissions are attributable not only to the restricted rotation of the peripheral phenyl rings, but also to the long intermolecular distances between the adjacent molecules in the crystal packing.
研究人员合成了一系列在磷原子上带有不同芳基的 2,3,4,5- 四苯基膦氧化物,并研究了它们在晶体状态下的荧光特性。其中一些化合物显示出强烈的荧光,量子产率为 0.75-0.91。这些强烈的发射不仅归因于外围苯基环的旋转受限,还归因于晶体堆积中相邻分子之间的分子间距较长。