華南理工大学 (South China University of Technology) の留学生 Ming Liu 君と Shi-Jian Su 教授との青色熱活性化遅延蛍光材料（TADF）の共同研究論文に関する「Introduction of Twisted Backbone: a New Strategy to Achieve Efficient Blue Fluorescence Emitter with Delayed Emission」と題する論文が Wiley の Advanced Optical Materials (IF: 5.36) にアクセプトされました。一緒に研究を進めてくれた D3 小松君、D2 鎌田君、M2 中尾君、おめでとうございます！
Title: Introduction of Twisted Backbone: a New Strategy to Achieve Efficient Blue Fluorescence Emitter with Delayed Emission
By M. Liu, R. Komatsu, X. Cai, T. Kamata, K. Nakao, H. Sasabe,* J. Kido*, S.-J. Su*, Advanced Optical Materials, accepted.
Abstract: By introducing an acceptor which contains double sulfonyl groups and a twisted biphenyl core, an efficient blue thermally activated delayed fluorescent (TADF) emitter was successfully developed. Comparative study and analysis were carried out on it with an analogous molecule, which also imports two sulfonyl groups as acceptors and exactly same donor units but shows stretched shape and displays green emission. Results of quantum chemistry computation estimate the introduction of such a twisted backbone is beneficial to increase energies of both singlet and triplet states. As a contrast to its counterpart, the newly developed blue compound with contorted structure enables a desirable emission with a peak wavelength of 460 nm and superior photoluminescence quantum yield up to 82%. Moreover, remarkable external quantum efficiency over 24% was achieved from electroluminescent device based on the blue emitter, while this value was almost twice to that of the green device based on its analog as emitter.
