AUTHOR=Cao Jinzhu , Zhang Meng , Singh Manjeet , An Zhongfu , Ji Lingfei , Shi Huifang , Jiang Yijian TITLE=Highly Efficient Heavy Atom Free Room Temperature Phosphorescence by Host-Guest Doping JOURNAL=Frontiers in Chemistry VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2021.781294 DOI=10.3389/fchem.2021.781294 ISSN=2296-2646 ABSTRACT=

Recently, there has been remarkable progress of the host-guest doped pure organic room-temperature phosphorescence (RTP) materials. However, it remains a great challenge to develop highly efficient host-guest doping systems. In this study, we have successfully developed a heavy atom free pure organic molecular doped system (benzophenone-thianthrene, respectively) with efficient RTP through a simple host-guest doping strategy. Furthermore, by optimizing the doping ratios, the host-guest material with a molar ratio of 100:1 presented an efficient RTP emission with 46% quantum efficiency and a long lifetime of up to 9.17 ms under ambient conditions. This work will provide an effective way to design new organic doping systems with RTP.