Abstract
Trace guest doping systems often show better room temperature phosphorescence (RTP), but trace guest doping role and mechanism are not recognized well. Here we cocrystallize commercial (CCZ) and self-made (LCZ) carbazole derivatives and verify that 0.2‰ isomer doping can afford the deserved crystal RTP, but further increasing the isomer amount hardly improves RTP. Isomer doping does not affect crystal stacking modes and intermolecular interactions and is inefficient in monomolecular and amorphous states. LCZ derivatives are intrinsically phosphorescent, but crystallization itself cannot effectively inhibit thermal deactivation, and isomer doping restricts nonradiative relaxation and reduces the energy level of the triplet emissive state via space action at a distance rather than currently described adjacent intermolecular interactions. This work has updated some existing views and represented an important conceptual advance in a fresh understanding of trace guest doping RTP systems.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
