Synthesis and properties of bipolar derivatives of 1,3,5-triazine and carbazole

被引：46
作者：
Matulaitis, T. [1 ]
Kostiv, N. [1 ]
Grazulevicius, J. V. [1 ]
Peciulyte, L. [1 ]
Simokaitiene, J. [1 ]
Jankauskas, V. [2 ]
Luszczynska, B. [3 ]
Ulanski, J. [3 ]
机构：
[1] Kaunas Univ Technol, Dept Polymer Chem & Technol, Radvilenu Pl 19, LT-50254 Kaunas, Lithuania
[2] Vilnius State Univ, Dept Solid State Elect, Sauletekio Al 9, LT-10222 Vilnius, Lithuania
[3] Lodz Univ Technol, Dept Mol Phys, Lodz, Poland
来源：
DYES AND PIGMENTS | 2016年 / 127卷
关键词：
Triazine; Carbazole; Photoluminescence; Solvatochromism; Hole mobility; Theoretical study; LIGHT-EMITTING-DIODES; ELECTRON-TRANSPORT MATERIALS; BLUE; PHOSPHORESCENT; TRIAZINE; MOLECULES; TIME; UNITS; HOST;
D O I：
10.1016/j.dyepig.2015.11.001
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Three new bipolar star-shaped derivatives of 2,4,6-triphenyl-1,3,5-triazine containing carbazolyl groups were designed, synthesized and characterized. All the materials possess high thermal stability and high glass transition temperatures ranging 97-226 degrees C. Photophysical study of the dilute solutions and neat films of the synthesized compounds was performed. Lippert-Mataga plots revealed linear dependence of Stokes shifts on the orientation polarizability for all the compounds. The dilute solutions of the triazine derivatives exhibited high photoluminescence quantum yields reaching 0.85, while for the neat films photoluminescence efficiency of 0.20-0.33 was observed. Ionization potentials of the solid layers of carbazole-triazine adducts estimated by photoelectron spectroscopy were found to be in the range of 5.49-5.97 eV. Hole drift mobility of the materials well exceeded the magnitude of 10(-3) cm(2) V-1 s(-1) at an electric field of 6.4 . 10(5) V/cm. The selected compounds were tested as light emitting materials in organic light emitting diodes based on host-guest systems. (C) 2016 Published by Elsevier Ltd.
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页码：45 / 58
页数：14
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