High Upconversion Efficiency from Hetero Triplet-Triplet Annihilation in Multiacceptor Systems

被引：72
|
作者：
Cao, Xian [1 ]
Hu, Bo [1 ]
Zhang, Peng [1 ]
机构：
[1] Univ Cincinnati, Dept Chem, Cincinnati, OH 45221 USA
来源：
JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2013年 / 4卷 / 14期
基金：
美国国家科学基金会;
关键词：
DELAYED FLUORESCENCE; SINGLET FISSION; ANTHRACENE; BLUE;
D O I：
10.1021/jz401213w
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report the observation of very high triplet triplet annihilation (TTA) upconversion efficiency in single-sensitizer/multiacceptor systems. A hetero-TTA process between triplet acceptors of different types is believed to account for the synergistic effect leading to the high upconversion efficiency. The upconversion quantum yield of the dual-acceptor system is much higher than the sum of the two single-acceptor systems.
引用
收藏
页码：2334 / 2338
页数：5
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