Sterically demanding methoxy and methyl groups in ruthenium complexes lead to enhanced quantum yields for blue light triggered photodissociation
作者:Fengrui Qu、Kristina Martinez、Ashley M. Arcidiacono、Seungjo Park、Matthias Zeller、Russell H. Schmehl、Jared J. Paul、Yonghyun Kim、Elizabeth T. Papish
DOI:10.1039/c8dt03295e
日期:——
phen = 1,10-phenanthroline) and [(dop)2Ru(6,6′-dmbp)]Cl2 (3OMe, dop = 2,3-dihydro-[1,4]dioxino[2,3-f][1,10]phenanthroline), have been fully characterized and display enhanced quantum yields for blue light triggered photodissociation of 0.024(6) and 0.0030(2), respectively. We have also synthesized 4OH = [(dmphen)2Ru(4,4′-dhbp)]Cl2 wherein dmphen = 2,9-dimethyl-1,10-phenanthroline and 4,4′-dhbp = 4,4′-dihydroxybipyridine
通过光活化化学疗法(PACT),含有空间上拥挤的金属中心的钌配合物可以用作光活化的前药。在这项工作中,我们改性的含6,6'- dihydroxybipyridine(6,6'- DHBP)PACT剂(Papish等人,Inorg。化学式,2017年,56,7519)通过用空间庞大配体等电子取代它, 6,6'-二甲氧基联吡啶(6,6'-dmbp)。生成的络合物[[(phen)2 Ru(6,6'-dmbp)] Cl 2(2 OMe,phen = 1,10-菲咯啉)和[(dop)2 Ru(6,6'-dmbp)] Cl 2(3 OMe,dop = 2,3-dihydro- [1,4] dioxino [2,3- f] [1,10]菲咯啉)已被充分表征,并显示出增强的量子产率,用于蓝光触发的光解离分别为0.024(6)和0.0030(2)。我们还合成了4 OH = [(dmphen)2 Ru(4,4'-dhbp)]