Journal
DYES AND PIGMENTS
Volume 184, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2020.108874
Keywords
Anthracene; Deep blue; Molecular twisting; Organic light-emitting diode
Funding
- Thailand Research Fund [RTA6080005]
- National Nanotechnology Center, National Science and Technology Development Agency, Ministry of Higher Education, Science, Research and Innovation, Thailand, through its program of Research Network National Nanotechnology Center
- Vidyasirimedhi Institute of Science and Technology
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By using molecular twisting and different side group substitutions, three anthracene-based deep blue emitters were effectively developed, exhibiting strong deep blue photoluminescence and high OLED device performance.
By using molecular twisting 2,2'-dimethylbiphenyl core and different side group substitutions, three anthracene-based deep blue emitters, 10,10'-(2,2'-dimethyl-[1,1'-biphenyl]-4,4'-diyl)bis(9-phenylanthracene) (PABP), 10,10'-(2, 2'-dimethyl-[1,1'-biphenyl]-4,4'-diyl)bis(9-(naphthalen-2-yl)anthracene) (beta NABP) and 10,10'-(2,2'-dimethyl-[1,1'-biphenyl]-4,4'-diyl)bis(9-(naphthalen-1-yl)anthracene) (alpha NABP), were effectively developed. These three twisted anthracene derivatives exhibited strong deep blue photoluminescence which remarkably surpassed the standard blue for the high-definition television (HDTV). Particularly, PABP with high hole mobility of 1.67 x 10(-5) cm(2) V-1 s(-)(1) delivered a high OLED device performance with external quantum efficiency (EQE) of 4.04% and deep blue emission colour with CIE coordinates of (0.15, 0.05).
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