Highly efficient photoproduction of charge-separated states in donor-acceptor-linked bis(acetylide) platinum complexes.
Highly efficient photoproduction of charge-separated states in donor-acceptor-linked bis(acetylide) platinum complexes.
复制标题
DOI：
10.1021/ja904241r
复制
发表时间：
2009-07
影响因子：
15
通讯作者：
Shuichi Suzuki;Ryoji Sugimura;M. Kozaki;Kazutoshi Keyaki;K. Nozaki;N. Ikeda;K. Akiyama;K. Okada
中科院分区：
文献类型：
--
作者：
Shuichi Suzuki;Ryoji Sugimura;M. Kozaki;Kazutoshi Keyaki;K. Nozaki;N. Ikeda;K. Akiyama;K. Okada
我们报道了一个高效的电荷分离体系，D-Pt-A，其中D（三苯胺）和A（萘二酰亚胺）通过高度扭曲的亚苯基乙炔基键合到Pt部分。形成电荷分离态的量子产率被确定为接近1。D（+）-Pt-A（-）的寿命在室温下约为1 μ s，在低温下更长。通过时间分辨EPR谱直接观察到自旋相关自由基离子对。
We report a highly efficient charge separation system, D-Pt-A, where D (triphenylamine) and A (naphthalenediimide) are bonded to the Pt moiety through highly twisted phenylene ethynylene linkages. The quantum yields for the formation of the charge-separated state were determined to be nearly unity. The lifetimes of D(+)-Pt-A(-) were approximately 1 micros at room temperature and much longer at low temperature. The spin-correlated radical ion pair was directly observed by means of time-resolved EPR spectroscopy.