Highly twisted pyrene derivatives for non-doped blue OLEDs
- Authors
- Lee, Sang Bong; Park, Kwang Hun; Joo, Chul Woong; Lee, Jeong-Ik; Lee, Jonghee; Kim, Yun-Hi
- Issue Date
- May-2016
- Publisher
- Elsevier BV
- Keywords
- Blue; Fluorescence; Organic light-emitting diode; Pyrene; Xylene; Non-coplanar structure
- Citation
- Dyes and Pigments, v.128, pp 19 - 25
- Pages
- 7
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Dyes and Pigments
- Volume
- 128
- Start Page
- 19
- End Page
- 25
- URI
- https://scholarworks.gnu.ac.kr/handle/sw.gnu/15520
- DOI
- 10.1016/j.dyepig.2015.12.024
- ISSN
- 0143-7208
1873-3743
- Abstract
- 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, H-1 NMR, C-13 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). (C) 2016 Elsevier Ltd. All rights reserved.
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