Selective Population of then, ?* and ?, ?* Triplet States of 1-Indanones
作者:Walter Amrein、Inga-Mai Larsson、Kurt Schaffner
DOI:10.1002/hlca.19740570826
日期:——
The two components of the dual phosphorescence of 1-indanone (1) and six relatedketones (2–7) possess different excitation spectra exhibiting the vibrational progression characteristic of the S0 S1 (n, π*) transition (shorter-lived emission) and two bands of the S0 S2 and 3 (π,π*) 0–0 transitions, respectively. The most favorable intersystem crossing routes are S1 (n, π*) T (n, π*) and S2,3 (π*) T
1-茚满酮(1)和六个相关酮(2-7)的双重磷光的两个成分具有不同的激发光谱,这些光谱显示出S 0 S 1(n,π*)跃迁的振动进展特征(发射寿命更短) )和S 0 S 2和3(π,π*)0-0跃迁的两个频带。最有利的系统间交叉路径是S 1(n,π*)T(n,π*)和S 2,3(π*)T(π,π*)。内部转换为S 1仅在S 2和S 3状态的较高振动水平下,与S(π,π*)T(π,π*)系统间交叉更有效地竞争。