Journal
LUMINESCENCE
Volume 31, Issue 2, Pages 364-371Publisher
WILEY-BLACKWELL
DOI: 10.1002/bio.2968
Keywords
indolizine derivatives; fluorescent blue-emitting material; microwave-assisted Suzuki coupling reaction; OLED
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Funding
- Basic Science Research Program through National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2011-0024970, NRF-2013R1A1A2065643]
- National Research Foundation of Korea [2011-0024970] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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New blue-emitting materials based on 1,2-diphenylindolizine were designed and synthesized through a microwave-assisted Suzuki coupling reaction. The photophysical, electrochemical, and thermal properties of the 1,2-diphenylindolizine derivatives were investigated using UV-visible and fluorescence spectroscopy, cyclic voltammetry, thermogravimetric analysis, and differential scanning calorimetry. The 1,2-diphenylindolizine derivatives had band gaps of 3.1-3.4eV and indicated proper emission of around 450nm without significant difference between in solution and thin solid film. The indolizine derivatives show an enhanced thermal stability (T-m>100 degrees C), compared with 1,2-diphenylindolizine. These results suggest the 1,2-diphenylindolizine derivatives are suitable for blue-emitting materials in organic light-emitting devices. Copyright (c) 2015 John Wiley & Sons, Ltd.
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