Issue 39, 2011
From the journal:

Physical Chemistry Chemical Physics

Pyrene-cored dendrimer with carbazole derivatives as dendrons: synthesis, properties and application in white light-emitting diode†

Jia You,a   Guiyang Li,a   Renjie Wang,b   Qiuping Nie,a   Zhonggang Wang*ab  and  Jiuyan Li*b  

* Corresponding authors

a Department of Polymer Science and Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, China
E-mail: zgwang@dlut.edu.cn
Fax: 0086-411-84986096
Tel: 0086-411-84986096

b State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, China
E-mail: jiuyanli@dlut.edu.cn

Abstract

A new dendrimer using pyrene as core and carbazole derivative as dendron has been successfully prepared via Suzuki coupling reaction. Its chemical structure was confirmed through 1H NMR, elemental analysis and MALDI-TOF MS methods. The dendrimer synthesized possessed excellent thermal stability with initial decomposition temperature over 470 °C and high fluorescence quantum yield of 86%. The luminescence spectra showed that, relative to the solution sample, the emission peaks of the solid dendrimer film were apparently broadened and red-shifted, indicating the strong π–π stacking effect between the pyrene moieties. By doping 1.5% of the dendrimer in 4,4′-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (NPB), a light-emitting diode device was fabricated in the ITO/NPB/NPB : dendrimer (1.5%)/TPBI/Mg : Ag configuration, which emitted a white color with Commission Internationale de L'Eclairage (CIEx,y) coordinates of (0.29, 0.34) and a maximum brightness of 1300 cd m−2, exhibiting promising potential in white light-emitting diode application.

Graphical abstract: Pyrene-cored dendrimer with carbazole derivatives as dendrons: synthesis, properties and application in white light-emitting diode

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Article information

DOI
https://doi.org/10.1039/C1CP21848D
Article type
Paper
Submitted
08 Jun 2011
Accepted
17 Aug 2011
First published
06 Sep 2011

Phys. Chem. Chem. Phys., 2011,13, 17825-17830

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Pyrene-cored dendrimer with carbazole derivatives as dendrons: synthesis, properties and application in white light-emitting diode

J. You, G. Li, R. Wang, Q. Nie, Z. Wang and J. Li, Phys. Chem. Chem. Phys., 2011, 13, 17825 DOI: 10.1039/C1CP21848D

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