期刊
ACS CENTRAL SCIENCE
卷 6, 期 11, 页码 2088-2096出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscentsci.0c01044
关键词
-
资金
- King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia, under the KFUPM-Caltech Research Collaboration
- Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub through Office of Science of the U.S. Department of Energy [DE-SC0004993]
- Caltech
- Dow Next Generation Educator Fund
Singlet fission has the potential to surpass current efficiency limits in next-generation photovoltaics and to find use in quantum information science. Despite the demonstration of singlet fission in various materials, there is still a great need for fundamental design principles that allow for tuning of photophysical parameters, including the rate of fission and triplet lifetimes. Here, we describe the synthesis and photophysical characterization of a novel bipentacene dipyridyl pyrrole (HDPP-Pent) and its Li- and K-coordinated derivatives. HDPP-Pent undergoes singlet fission at roughly 50% efficiency (tau(SF) = 730 ps), whereas coordination in the Li complex induces significant structural changes to generate a dimer, resulting in a 7-fold rate increase (tau(SF) = 100 ps) and more efficient singlet fission with virtually no sacrifice in triplet lifetime. We thus illustrate novel design principles to produce favorable singlet fission properties, wherein through-space control can be achieved via coordination chemistry-induced multipentacene assembly.
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