A t-butyl modification approach of acceptor moiety for stable deep blue emission in thermally activated delayed fluorescent devices

作者：Kang Yu Jin; Lee Jun Yeob

来源：Dyes and Pigments, 2017, 138: 176-181.

DOI：10.1016/j.dyepig.2016.11.036

• Deep blue
• Thermally activated delayed fluorescent emitter
• Color stability
• t-butyl

A t-butyl modification method of an acceptor moiety was developed as a molecular design approach of blue emitters to shift the emission color to deep blue region and to stabilize the emission color according to doping concentration. A phenyl unit of triphenyltriazine acceptor moiety of blue thermally activated delayed fluorescent emitter was modified with either one or two t-butyl units to study the effect of the t-butyl unit on the electroluminescence emission of the blue thermally activated delayed fluorescent emitters. It was found that two t-butyl units introduced in the phenyl unit of the triphenyltriazine shifted the emission color to deep blue emission while keeping the deep blue color over wide doping concentration range.

• 出版日期2017-3