Visible-to-UV Photon Upconversion in Nanostructured Chromophoric Ionic Liquids

Shota Hisamitsu, Junji Miyano, Keisuke Okumura, Joseph Ka-Ho Hui, Nobuhiro Yanai, Nobuo Kimizuka

Research output: Contribution to journalComment/debatepeer-review


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 10.1002/open.201900304.

Original languageEnglish
Pages (from-to)3
Number of pages1
Issue number1
Publication statusPublished - Jan 1 2020

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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