Design, Synthesis, and Photodynamics of Light-Harvesting Arrays Comprised of a Porphyrin and One, Two, or Eight Boron-Dipyrrin Accessory Pigments
作者:Feirong Li、Sung Ik Yang、Yangzhen Ciringh、Jyoti Seth、Charles H. Martin、Deepak L. Singh、Dongho Kim、Robert R. Birge、David F. Bocian、Dewey Holten、Jonathan S. Lindsey
DOI:10.1021/ja9812047
日期:1998.10.1
Light-harvesting arrays containing one, two, or eight boron-dipyrrin (BDPY) pigments and one porphyrin (free base or Zn chelate) have been synthesized using a modular building block approach. The reaction of pyrrole and 4-(BDPY)benzaldehyde or 3,5-bis(BDPY)benzaldehyde, prepared by Pd-mediated ethynylation with the corresponding iodo-benzaldehydes, affords the desired BDPY-porphyrin array in yields
已经使用模块化构建块方法合成了包含一种、两种或八种硼二吡喃 (BDPY) 颜料和一种卟啉(游离碱或锌螯合物)的捕光阵列。吡咯与 4-(BDPY) 苯甲醛或 3,5-双 (BDPY) 苯甲醛反应,通过 Pd 介导的乙炔化与相应的碘苯甲醛反应,以 10-58% 的产率提供所需的 BDPY-卟啉阵列。该阵列可溶于有机溶剂,并已通过静态和时间分辨吸收和荧光光谱进行表征。当存在八种 BDPY 辅助色素时,蓝绿色 BDPY 吸收补充了卟啉发色团的光谱覆盖范围,并与卟啉 Soret 带的强度相媲美。在每个卟啉含有一或两种 (>90%) 或八种 (>85%) 辅助颜料的阵列中观察到从 BDPY 色素到卟啉(游离碱或锌螯合物)的有效能量转移。BDPY 颜料在 Isol 中表现出双相激发态衰变行为...