Molecular design of thermally activated delayed fluorescent emitters for blue-shifted emission by methoxy substitution,Journal of Materials Chemistry C

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Molecular design of thermally activated delayed fluorescent emitters for blue-shifted emission by methoxy substitution
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2017-08-12 00:00:00 , DOI: 10.1039/c7tc02859h
Chan Seok Oh _{1,

2,

3,

4,

5} , Si Hyun Han _{1,

2,

3,

4,

5} , Jun Yeob Lee _{1,

2,

3,

4,

5}

Affiliation

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.

中文翻译：

通过甲氧基取代进行蓝移发射的热活化延迟荧光发射体的分子设计

通过使用甲氧基取代基修饰苯基接头，开发了用于蓝移发射的热活化延迟荧光发射体的分子设计方法。将一个甲氧基或两个甲氧基引入连接二苯基三嗪受体和二甲基ac啶供体的苯基接头中，以控制发射光谱。一个甲氧基的取代将发射色移至短波长，同时保留了没有甲氧基取代基的原始材料的外部量子效率。在将发射波长蓝移12 nm的同时，获得了超过20％的高外部量子效率。然而，两个甲氧基的取代降低了器件的量子效率，尽管发射颜色转移到了短波长。

更新日期：2017-09-14

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