Room‐Temperature Phosphorescence Enhanced by Narrowing Down ΔEST through Tuning Excited States Energy Levels
Source abstract
Abstract
Abstract In this work, two spiro‐type compounds are investigated with similar molecular structure and stacking structure. By simply altering the acceptor's heteroatoms, a strategy to enhance room temperature phosphorescence (RTP) performance is presented. The intersystem crossing process can effectively be accelerated by reducing the energy gap between the singlet and triplet states (ΔEST) through adjusting the molecular energy level. Besides, thermally activated delayed fluorescence (TADF) is emerging in dilute solution due to such small ΔEST. This is helpful for deeply understanding the mechanism of competition in different radiative decay pathways (RTP and TADF).
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Research context
OpenAlex topics: Luminescence and Fluorescent Materials · Organic Light-Emitting Diodes Research · Perovskite Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Chemistry Fuzhou University Fuzhou 350116 P. R. China
CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Chinese Academy of Sciences Fujian Institute of Research on the Structure of Matter Fuzhou Fujian 350002 P. R. China
School of Materials Science and Engineering Fujian University of Technology Fuzhou 350108 P. R. China
University of Chinese Academy of Sciences Beijing 100049 P. R. China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Fujian Province
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