Synthesis and photophysical properties of 1, 2‐diphenylindolizine derivatives: fluorescent blue‐emitting materials for organic light‐emitting device. (20th July 2015)

• Record Type: Journal Article
• Authors: Song, Yeong Ran; Lim, Choon Woo; Kim, Tae Woo
• Is Part Of: Luminescence. Volume 31:Number 2(2016:Mar./Apr.)
• Page Start: 364
• Page End: 371
• Publication Date: 2015-07-20
• Subjects: indolizine derivatives -- fluorescent blue‐emitting material -- microwave‐assisted Suzuki coupling reaction -- OLED; Luminescence -- Periodicals; Bioluminescence -- Periodicals; Chemiluminescence -- Periodicals; Luminescence -- Periodicals; 535.35
• DOI: 10.1002/bio.2968
• Languages: English
• ISSNs: 1522-7235

Abstract

Abstract: 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 (∆Tm > 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.