Hybrid host materials for highly efficient electrophosphorescence and thermally activated delayed fluorescence independent of the linkage mode

Literature Information

Publication Date 2017-01-18
DOI 10.1039/C6CP08334J
Impact Factor 3.676
Authors

Chao Wu, Qingxun Guo, Wujun Ma, Xiaoping Li, Panlong Qiu, Jianyong Hu, Qiang Wang


View Original

Abstract

Three non-conjugated hybrid host materials, tBu-OXD-o-L-TPA, tBu-OXD-m-L-TPA, and tBu-OXD-p-L-TPA, have been synthesized and characterized for their thermal, electrochemical, fluorescence, phosphorescence, and electroluminescence properties. Due to the non-conjugated spacer, the three hosts have a similar ET value as high as 2.71 eV, which is sufficiently high for blue phosphorescent and thermally activated delayed fluorescent (TADF) emitters. Different from the hosts with a direct linkage between a donor and an acceptor showing significantly distinct properties depending on linkage modes, the three new hosts demonstrate similar photophysical, electrochemical, and organic light-emitting device performances. Both phosphorescent and TADF devices with high efficiencies have been realized using all the three hosts. These results reveal a new merit of employing a non-conjugated spacer, which enables the synthesized hosts to show properties independent of the linkage mode. This might facilitate choosing materials with an economical synthesis process while not influencing their properties and thus enhance the potential of universal host materials.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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