期刊
MOLECULAR PHYSICS
卷 119, 期 17-18, 页码 -出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00268976.2021.1964043
关键词
Transition metal complexes; photochemistry; ultrafast spectroscopy
资金
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through the Priority Program SPP 2102 `Light-controlled reactivity of metal complexes' [VO-593/8-1, 404522842]
The elementary light-triggered dynamics of the transition metal complex were investigated using femtosecond mid-infrared and UV-Vis spectroscopies, revealing the sequential intramolecular electron transfer process involved in the system.
The elementary light-triggered dynamics of the transition metal complex, trans-[Co-III(acac)(2)(N-3)(py)] (trans-[1]), was investigated using femtosecond mid-infrared (mIR) and UV-Vis spectroscopies following ultrafast acetylacetonate-to-cobalt charge-transfer excitation at 266 nm. The spectro-temporal response is indicative of an ultrafast return to the electronic ground state via a sequential intramolecular electron transfer. The locally excited ligand-to-metal charge transfer state, (LMCTacac)-L-1, decays within 200 fs via azide-to-acac electron transfer to another charge-transfer state, (LMCTazide)-L-1, that features an azidyl radical ligand attached to a cobalt(II) center. A subsequent cobalt-to azidyl electron transfer occurring within 1.8 ps generates an excited metal centered state, (MC)-M-1, thereby re-establishing the fully closed-shell character of the anionic azido and acac ligands. The fully relaxed electronic ground state of trans-[1] is then recovered via internal conversion and vibrational energy relaxation on a 10 ps-time scale.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据