Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems (CMS), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka, 819-0395, Japan.
JST-PRESTO, Honcho 4-1-8, Kawaguchi, Saitama, 332-0012, Japan.
ChemistryOpen. 2019 Dec 20;9(1):3. doi: 10.1002/open.201900358. eCollection 2020 Jan.
Invited for this month's cover picture is the group of Professor Nobuhiro Yanai and Nobuo Kimizuka at Kyushu University. The cover picture shows visible-to-ultraviolet (vis-to-UV) triplet-triplet annihilation-based photon upconversion (TTA-UC) via triplet exciton diffusion in a chromophoric ionic liquid (IL). Chromophore moieties spontaneously form continuous arrays in non-polar nano-domains of the IL. The close arrangement of the chromophores in the IL allowed effective diffusion of triplet excitons, resulting in the vis-to-UV TTA-UC at a low excitation intensity. Read the full text of their Communication at https://doi.org/10.1002/open.201900304.
本期封面的特邀作者是来自九州大学的Yanai 教授和 Kimizuka 教授课题组。该封面展示了发色离子液体（IL）中通过三重态激子扩散实现的可见-紫外（vis-to-UV）三重态-三重态湮灭上转换（TTA-UC）。发色团部分在 IL 的非极性纳米区域内自发形成连续的阵列。IL 中发色团的紧密排列允许三重态激子有效扩散，从而在低激发强度下实现了 vis-to-UV TTA-UC。阅读全文请访问 https://doi.org/10.1002/open.201900304。
