Moorlag Carolyn, Sarkar Biprajit, Sanrame Carlos N, Bäuerle Peter, Kaim Wolfgang, Wolf Michael O
Department of Chemistry, University of British Columbia, Vancouver, British Columbia, V6T 1Z1 Canada.
Inorg Chem. 2006 Sep 4;45(18):7044-6. doi: 10.1021/ic060912n.
Photoexcitation of a bis(bipyridyl) Ru(II) complex bearing a phosphinopentathiophene ligand results in formation of a transient species with a lifetime of 2.2 micros. The transient is attributed to the product of an intramolecular charge transfer from the pentathiophene ligand. EPR and UV/vis spectroelectrochemistry show that the HOMO is pentathienyl-based, while corresponding complexes with shorter conjugation length ligands have a metal-based HOMO and do not exhibit long-lived transients.
对带有膦基五噻吩配体的双（联吡啶）钌（II）配合物进行光激发，会形成一种寿命为2.2微秒的瞬态物种。该瞬态归因于分子内从五噻吩配体发生电荷转移的产物。电子顺磁共振（EPR）和紫外/可见光谱电化学表明，最高占据分子轨道（HOMO）基于五噻吩基，而具有较短共轭长度配体的相应配合物具有基于金属的HOMO，并且不会表现出长寿命的瞬态。
