2025-07-0 ミシガン大学
The new TGlu molecule is a small but powerful single benzene fluorophore with a quantum yield—percent light re-emitted versus light lost as heat—above 90% in both solution and solid. Caption. Image credit: Jinsang Kim Laboratory
＜関連情報＞
- https://news.umich.edu/displays-imaging-and-sensing-new-blue-fluorophore-breaks-efficiency-records-in-both-solids-and-solutions/
- https://www.nature.com/articles/s41467-025-60316-0
単一ベンゼン蛍光体の固相および溶液相を横断する効率的な発光の分子構造的起源を解明する Elucidating the molecular structural origin of efficient emission across solid and solution phases of single benzene fluorophores
Jung-Moo Heo,Jihyun Park,Maria F. Flórez-Angarita,Liangxuan Wang,Changhoon Yu,Jinho Choi,Hochul Woo,Begoña Milián-Medina,Adam J. Matzger,Min Sang Kwon,Johannes Gierschner & Jinsang Kim
Nature Communications Published:01 July 2025
DOI:https://doi.org/10.1038/s41467-025-60316-0
Abstract
Achieving high quantum yields for organic fluorophores in both solution and in the polycrystalline solid state is a significant yet challenging goal, as most fluorophores typically emit effectively in only one phase. In this study, we introduce 1,1’-(2,5-dimethoxyterephthaloyl)-bis(glutraimide) (TGlu), a novel ‘single benzene’-based organic fluorophore featuring an alkoxy donor and an N-acyl-glutarimide acceptor. TGlu achieves close-to-unity fluorescence quantum yields in both solution and in the polycrystalline state. Through systematic studies involving four additional structural analogues of TGlu, we unveiled that the acceptor group within the single benzene core plays a crucial steric and electronic role in achieving high fluorescence efficiency in both phases. Furthermore, we demonstrated the versatility of this new fluorophore in various applications. In solution, TGlu serves as a highly effective photocatalyst for photoinduced energy/electron transfer reversible addition−fragmentation chain-transfer polymerization while in its single-crystal form, TGlu exhibits highly efficient waveguiding properties.
