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CC BY-NC-ND 4.0 · Organic Materials 2020; 02(01): 001-010
DOI: 10.1055/s-0039-3402059
DOI: 10.1055/s-0039-3402059
Original Article
Lock-and-Key Exciplexes for Thermally Activated Delayed Fluorescence
Authors
Funding Information This study was funded by the Air Force Office of Scientific Research (FA9550-18-1-0341), the Department of Energy, Labor and Economic Growth (DE-FG02-07ER46474), DFG (EN 1138/1-1), NIH (GM112272), and Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (PA00P2-145389).
Further Information
Publication History
Received: 19 October 2019
Accepted after revision: 05 November 2019
Publication Date:
16 January 2020 (online)
Abstract
We combine synthetic supramolecular chemistry and materials science to develop novel exciplexes for thermally activated delayed fluorescence. Our approach starts from a bowl-shaped acceptor molecule for which we synthesize tailor-made donors that bind in a lock-and-key fashion. The donor design is guided by extensive density functional theory calculations of three independent donor families. The investigation of a large number of custom-synthesized donors allows us to derive empirical relationships for the prediction of the exciplex emission color. Incorporated within organic light-emitting devices, the lock-and-key exciplexes yield external quantum efficiencies of up to 5.4%, with potentially tunable emission color across the blue and green visible spectrum.
Supporting Information
Supporting information for this article is available online at https://doi.org/10.1055/s-0039-3402059.
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