期刊
DYES AND PIGMENTS
卷 205, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2022.110505
关键词
Deep-blue fluorescent dopants; 8-Diisopropyl-substituted pyrene; 7-Disubstituted pyrene; Positional effect of arylamines; Highly efficient blue OLEDs
资金
- National Research Foundation of Korea (NRF) - Ministry of Education [2018R1A6A1A03023788, 2020R1I1A3073592, 2021R1A2C1008725]
- Korea Institute for Advancement of Technology (KIAT) - Korea Government (MOTIE) [P0008500]
- Industrial Strategic Technology Development Program [20011059]
- Technology Innovation Program - Ministry of Trade, Industry & Energy (MOTIE, Korea) [20010443]
- Ministry of Trade, Industry & Energy (MOTIE, Korea)
- Korea Evaluation Institute of Industrial Technology (KEIT) [20010443, P0008500] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2020R1I1A3073592, 2021R1A2C1008725] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
New blue fluorescent dopant materials based on pyrene moieties were synthesized by varying the positions of functional groups, and the dopant with functional groups at the 1, 6 position exhibited the highest photoluminescence quantum yield.
New blue fluorescent dopant materials based on pyrene moieties were synthesized by variation of the positions of N-phenylnaphthalene-1-amine functional groups to minutely control the molecular geometry and photophysical properties. A blue dopant with the functional groups at the 1, 6 position exhibited the highest photoluminescence quantum yield. 3,8-Diisopropyl-N1,N6-di(naphthalen-1-yl)-N1,N6-diphenylpyrene-1,6-diamine (DI-1,6-DAP) exhibited the best performances with a current efficiency of up to 6.89 cd/A and external quantum efficiency of 5.45% among the new synthetic dopants prepared in this study. In terms of color purity, the case of substituting arylamine groups at the 1,7 position of the pyrene core unit [N1,N7-di(naphthalen-1-yl)-N1,N7-diphenylpyrene1,7-diamine (1,7-DAP)] was superior to the case of attaching them at the 1,6 position of the same core unit [N1, N6-di(naphthalen-1-yl)-N1,N6-diphenylpyrene-1,6-diamine (1,6-DAP)] (y < 0.098).
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