系统间交叉
激发态
自旋(空气动力学)
光化学
化学
激发电子态
物理
原子物理学
单重态
热力学
作者
Ruilei Wang,А. А. Суханов,Yue He,A. E. Mambetov,Jianzhang Zhao,Daniel Escudero,Violeta K. Voronkova,Mariangela Di Donato
标识
DOI:10.1021/acs.jpcb.4c04242
摘要
We studied the excited state dynamics of two bis-amino substituted anthraquinone (AQ) derivatives, with absorption in the visible spectral region, which results from the attachment of a electron-donating group to the electron-deficient AQ chromophore. Femtosecond transient absorption spectra show that intersystem crossing (ISC) takes place in 190-320 ps, and nanosecond transient absorption spectra demonstrated an unusually short triplet state lifetime (2.06-5.43 μs) for the two AQ derivatives. Pulsed laser-excited time-resolved electron paramagnetic resonance (TREPR) spectra show an inversion of the electron spin polarization (ESP) phase pattern of the triplet state at a longer delay time after laser flash. Spectral simulations show faster decay of the T
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