oligothiophenes;
optical absorption and emission spectroscopy;
photoluminescence;
D O I:
10.1016/S0379-6779(98)00322-1
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
The optical properties and the photoexcitation dynamics of quasi-planar thiophene oligomers included in perhydrotriphenylene are reported. The spectroscopical properties of different oligothiophene conformers are studied with both cw site selective and time resolved photoluminescence measurements. A fast torsional relaxation in the excited state before radiative recombination is proposed as the main photoexcitation mechanism.