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  • 09월 20일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제126회 대한화학회 학술발표회 및 총회 High Performance Solution-Processable Thermally Activated Delayed Fluorescent OLEDs with Organoboron Acceptor Monomer in Copolymer Host Materials

2020년 9월 17일 12시 48분 18초
POLY.P-39 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 21일(수) 17:00~17:30
Polymer Chemistry
저자 및
Jinhyo Hwang, Hyung Jong Kim, Young Un Kim, Nayeon Kwon, Chai Won Kim, Dong Hoon Choi*
Department of Chemistry, Korea University, Korea
In particular, polymer hosts in organic light emitting diodes (OLED) have superior characteristics, including facile functionality to introduce various electron donor and acceptor entities, and ability to uniformly disperse and contain small molecular dopants. In this study, we designed and developed three new styrene-based copolymers (ABP91, ABP73, and ABP55) bearing 2,12-di-tert-butyl-7-phenyl-5,9-dioxa-13b-boranaphtho[3,2,1-de]anthracene as the electron acceptor and diphenylacridine as the electron donor. In particular, ABP91, ABP73, and ABP55 were synthesized via variations in the ratio of donor to acceptor monomers to substantiate their influence in OLED applications. Consequently, solution-processable OLEDs fabricated using the newly synthesized copolymers as host materials and the familiar t4CzIPN as a green emissive TADF dopant deliver state-of-the-art performance, with maximum EQEs of 21.8, 22.2, and 19.7% for ABP91, ABP73, and ABP55, respectively. To our knowledge, this is the best performance reported when organic polymers are used as host materials in solution-processable TADF OLEDs. The pragmatic outcomes obtained in this study can provide useful insights into the structure–property relationship to the OLED community for the further development of efficient polymer hosts for use in solution-processable TADF OLEDs.