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Issue 35, 2017
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Molecular design of thermally activated delayed fluorescent emitters for blue-shifted emission by methoxy substitution

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Abstract

The molecular design method of thermally activated delayed fluorescent emitters for blue-shifted emission was developed by modifying a phenyl linker using a methoxy substituent. One methoxy or two methoxy groups were introduced into the phenyl linker connecting a diphenyltriazine acceptor and a dimethylacridine donor to manage the emission spectrum. Substitution of one methoxy group shifted the emission color to a short wavelength while preserving the external quantum efficiency of the pristine material without the methoxy substituent. A high external quantum efficiency of over 20% was obtained while blue-shifting the emission wavelength by 12 nm. However, the substitution of two methoxy groups decreased the quantum efficiency of the devices although the emission color was shifted to a short wavelength.

Graphical abstract: Molecular design of thermally activated delayed fluorescent emitters for blue-shifted emission by methoxy substitution

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Publication details

The article was received on 26 Jun 2017, accepted on 11 Aug 2017 and first published on 12 Aug 2017


Article type: Paper
DOI: 10.1039/C7TC02859H
Citation: J. Mater. Chem. C, 2017,5, 9106-9114
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    Molecular design of thermally activated delayed fluorescent emitters for blue-shifted emission by methoxy substitution

    C. S. Oh, S. H. Han and J. Y. Lee, J. Mater. Chem. C, 2017, 5, 9106
    DOI: 10.1039/C7TC02859H

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