Rational Design of Color‐Pure Blue Organic Emitters by Poly‐Heteroaromatic Omni‐Delocalization
Source abstract
Abstract
Abstract Current research on organic light emitters which utilize multiple resonance‐induced thermally activated delayed fluorescence (MR‐TADF) materials is gaining significant interest because of the materials’ ability to efficiently generate color‐pure blue emission. However, the underlying reasons for high color purity remain unclear. It is shown here that these emitters share a common electronic basis, which is deduced from resonance structure considerations following Clar's rule, and which is termed as “poly‐heteroaromatic omni‐delocalization” (PHOD). The simple and clear design rules derived from the PHOD concept allow extending the known chemical space by new structural motifs. Based on PHOD, a set of novel high‐efficiency color‐pure emitters with brilliant deep‐blue hue is specifically designed.
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Research context
OpenAlex topics: Organic Light-Emitting Diodes Research · Luminescence and Fluorescent Materials · Organic Electronics and Photovoltaics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Materials Science and Engineering Research Institute of Advanced Materials Seoul National University Seoul 08826 Republic of Korea
Madrid Institute for Advanced Studies IMDEA Nanoscience, C/ Faraday 9 Ciudad Universitaria de Cantoblanco Madrid 28049 Spain
Institute of Physical and Theoretical Chemistry Eberhard Karls University Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
Department of Electrical and Computer Engineering Inter‐University Semiconductor Research Center Seoul National University Seoul 08826 Republic of Korea
Department for Physical Chemistry Faculty of Chemistry University of Valencia Burjassot Valencia 46100 Spain
Funding
China Scholarship Council · Comunidad de Madrid · National Research Foundation of Korea · Ministerio de Ciencia e Innovación
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