Analysis on the mechanism of photoluminescence quenching in π-conjugated polymers in photo-oxidation process with broadband transient grating

Wang, Ying-hui; Peng, Ya-jing; Mo, Yue-qi; Yang, Yan-qiang; Zheng, Xian-xu
December 2008
Applied Physics Letters;12/8/2008, Vol. 93 Issue 23, p231902
Academic Journal
Photoinduced oxidation process of poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene] is probed by using broadband transient grating technique. The results suggest that the damage of bonds in the side and main chains leads to the line shape variation and efficiency decreasing of luminescence in photoluminescence quenching, and their temporal evolution and damage rates are found to vary with molecular energy states.


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