作者
Yubing Hu, Fengyan Song, Zeng Xu, Yujie Tu, Haoke Zhang, Qian Cheng, Jacky WY Lam, Dongge Ma, Ben Zhong Tang
发表日期
2019/1/7
期刊
ACS Applied Polymer Materials
卷号
1
期号
2
页码范围
221-229
出版商
American Chemical Society
简介
Pure organic materials with circularly polarized luminescence (CPL) and delayed fluorescence have gained increasing interest from academic and technological areas. To enhance the solid-state emission and exciton utilization in chiral optoelectronic devices, a synthetic strategy to impart conjugated polymers with CPL and aggregation-induced delayed fluorescence was proposed. Herein, two conjugated macromolecules with electron-donating poly(carbazole-ran-acridine) backbones, electron-withdrawing dibenzothiophen-2-yl(phenyl)methanone, and chiral alanine moieties were designed and synthesized. Their neat films exhibited strong green emission with quantum yields of 6.7 and 10.3% and delayed fluorescence with a lifetime of 1.358 and 1.366 μs, respectively. Both the Cotton effect and CPL with a dissymmetry factor of −2.01 × 10–3 and −1.39 × 10–3 were determined in the solid state. Such unique …
引用总数
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