The Geometry of the Excited Charge Transfer States: Flattening or Twisting?
作者： J. Dobkowski , I. Sazanovich
DOI: 10.12693/APHYSPOLA.112.S-127
关键词: Single bond 、 Electron acceptor 、 Materials science 、 Atomic physics 、 Spectroscopy 、 Acceptor 、 Relaxation (NMR) 、 Excitation 、 Electron donor 、 Excited state
摘要: Numerous molecules built of an electron acceptor and donor units linked together by single bond exhibit a peculiar behavior in their low-lying electronically excited states. N,N-diethylaminoacetophenone 4-acetyl-4 0 -dimethylamino-biphenyl, having acetophenone as the difierentiated donors groups N(CH3)2 dimethylaniline, respectively, were selected subject study. To recognize state relaxation paths stationary time-resolved spectroscopy absorption emission was applied. Experimental results indicate that after excitation polar solvents reduces to minimum overlap between …-electron systems relaxing twisted internal charge-transfer state; contrary that, ∞attening -dimethylamino-biphenyl skeleton generates increase systems.
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