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Synthesis and photophysical properties of 1,2‐diphenylindolizine derivatives: fluorescent blue‐emitting materials for organic light‐emitting device
Author(s) -
Song Yeong Ran,
Lim Choon Woo,
Kim Tae Woo
Publication year - 2016
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2968
Subject(s) - indolizine , fluorescence , thermal stability , cyclic voltammetry , thermogravimetric analysis , differential scanning calorimetry , photochemistry , suzuki reaction , materials science , luminescence , electrochemistry , oled , chemistry , analytical chemistry (journal) , optoelectronics , organic chemistry , nanotechnology , electrode , optics , palladium , catalysis , physics , thermodynamics , layer (electronics)
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 3.1–3.4 eV and indicated proper emission of around 450 nm without significant difference between in solution and thin solid film. The indolizine derivatives show an enhanced thermal stability (∆T m > 100 °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 © 2015 John Wiley & Sons, Ltd.