Organic Materials, Table of Contents

CC BY-NC-ND 4.0 · Organic Materials 2020; 02(01): 001-010
DOI: 10.1055/s-0039-3402059

Original Article

The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/). (2020) The Author(s).

Lock-and-Key Exciplexes for Thermally Activated Delayed Fluorescence

Constantin-Christian A. Voll

^aDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States

,

Georgios Markopoulos

^aDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States

,

Tony C. Wu

^bDepartment of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States

,

Matthew Welborn

^aDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States

,

Jens U. Engelhart

^aDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States

,

Sébastien Rochat

^aDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States

,

Grace G. D. Han

^aDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States

,

Graham T. Sazama

^aDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States

,

Ting-An Lin

^bDepartment of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States

,

Troy Van Voorhis

^aDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States

,

Marc A. Baldo

^bDepartment of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States

,

Timothy M. Swager

^aDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States

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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.

Key words

Key words

TADF - exciplex - OLED - supramolecular chemistry - emitter

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Supplementary Material

Supplementary Material

Supporting Information