期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 8, 期 11, 页码 2475-2479出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.7b00942
关键词
-
类别
资金
- Research Grants Council of the Hong Kong Special Administrative Region, China [HKU700613E, AoE/P-03/08]
- University Grants Committee Special Equipment Grant [SEG HKU07, HKU09]
- University of Hong Kong Development Fund project New Ultrafast Spectroscopy Experiments for Shared Facilities
We report the synthesis and characterization of a conjugated polymer incorporated with cyclometalated platinum complexes on the main chain. The polymer may serve as an efficient triplet sensitizer in light-harvesting systems. The photophysical properties of the polymer were studied by nanosecond and femtosecond time-resolved transient absorption spectroscopies. After excitation, an energy-transfer process from the thiophene units on the conjugated main chain to the singlet excited state of the Pt complex moieties occurred in less than 150 fs. The subsequent intersystem crossing process resulted in the formation of a triplet excited state at the Pt complex moieties in similar to 3.2 ps, which was then followed by an efficient triplet diffusion process that led to the formation of triplet excitons on the polymer main chain in similar to 283 ps. This proposed efficient triplet sensitized Polymer system not only enhances the exciton diffusion length but also reduces energy loss in the process, which displays remarkable implications in the design of novel materials for triplet sensitized solar cells.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据