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학술지 Highly Twisted Pyrene Derivatives for Non-Doped Blue OLEDs
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저자
이상봉, 박광훈, 주철웅, 이정익, 이종희, 김윤희
발행일
201605
출처
Dyes and Pigments, v.128, pp.19-25
ISSN
0143-7208
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.dyepig.2015.12.024
협약과제
15PB1500, AMOLED TV용 soluble TFT 및 화소 형성 소재/공정 기술 개발, 이종희
초록
New highly twisted rigid blue light-emitting materials were designed, composed of pyrene with a xylene core unit and either naphthalene or phenyl end units. These blue-emitting materials were synthesized via the Suzuki cross-coupling reaction and their structures were confirmed using FT-IR, 1H NMR, 13C NMR, and mass spectroscopy. The optical, electrochemical and thermal properties of the materials were investigated. The non-coplanar structure introduced by highly twisted xylene units provides steric hindrance, resulting in very deep blue emission. The fabricated devices exhibited a maximum external quantum efficiency (EQE) of 3.69% with CIE color coordinates (x, y: 0.15, 0.06).