Silicon-Phthalocyanine-Cored Fullerene Dendrimers: Synthesis and Prolonged Charge-Separated States with Dendrimer Generations
作者:Mohamed E. El-Khouly、Eui Su Kang、Kwang-Yol Kay、Chan Soo Choi、Yasuyuki Aaraki、Osamu Ito
DOI:10.1002/chem.200601254
日期:2007.3.26
Silicon-phthalocyanine-cored fullerodendrimers with up to eight fullerene substituents (SiPc-n C(60); n=2, 4, and 8) have been synthesized. Photophysical properties of newly synthesized SiPc-n C(60) have been investigated by time-resolved fluorescence and transient absorption analysis with pulsed laser light. Laser photolysis measurements suggest the occurrence of a charge-separation process from (1)SiPc*
已经合成了具有多达八个富勒烯取代基(SiPc-n C(60); n = 2、4和8)的硅酞菁为芯的全树状大分子。通过时间分辨荧光和脉冲激光的瞬态吸收分析,研究了新合成的SiPc-n C(60)的光物理性质。激光光解测量表明,发生了从(1)SiPc *到C(60)亚基的电荷分离过程。近红外区的纳秒瞬态吸收光谱表明,形成的自由基离子对的寿命按SiPc-8 C(60)> SiPc-4 C(60)> SiPc-2 C(60)的顺序延长。 ,这可能与C(60)亚基之间的电子迁移有关。SiPc-n C(60)作为光收集系统的有用性,以电荷复合速率与电荷分离速率之比来评估,