Article

Near-infrared electroluminescence from fluorene-based copolymers

  1. Mingliang Sun,
  2. Xi Jiang,
  3. Li Wang,
  4. Chao He,
  5. Bin Du,
  6. Renqiang Yang,
  7. Yong Cao*

Article first published online: 24 MAR 2008

DOI: 10.1002/pola.22638

Issue

Journal of Polymer Science Part A: Polymer Chemistry

Journal of Polymer Science Part A: Polymer Chemistry

Volume 46, Issue 9, pages 3007–3013, 1 May 2008

Additional Information

How to Cite

Sun, M., Jiang, X., Wang, L., He, C., Du, B., Yang, R. and Cao, Y. (2008), Near-infrared electroluminescence from fluorene-based copolymers. Journal of Polymer Science Part A: Polymer Chemistry, 46: 3007–3013. doi: 10.1002/pola.22638

Author Information

  1. Institute of Polymer Optoelectronic Materials and Devices, Key Laboratory of Special Functional Materials, South China University of Technology, Guangzhou 510640, People's Republic of China

*Institute of Polymer Optoelectronic Materials and Devices, Key Laboratory of Special Functional Materials, South China University of Technology, Guangzhou 510640, People's Republic of China

Publication History

  1. Issue published online: 24 MAR 2008
  2. Article first published online: 24 MAR 2008
  3. Manuscript Accepted: 23 JAN 2008
  4. Manuscript Received: 13 NOV 2007

Funded by

  • National Natural Science Foundation of China. Grant Number: Project No. 50433030
  • Ministry of Science and Technology Project. Grant Number: 2002CB613404

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Keywords:

  • conjugated polymers;
  • fluorescence;
  • light-emitting diodes (LED);
  • near-infrared electroluminescence

Graphical Abstract

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Fluorene-based copolymers for near-infrared emitter containing narrow band gap chromophores have been synthesized. Devices from the resulted polymers emit 0.8–0.9μm wavelength light with the maximum external quantum efficiency 0.30%.

Abstract

A series of random low band-gap conjugated copolymers (PFO-DDTQ) derived from 9,9-dioctylfluorene (DOF) and 6,7-dimethyl-4,9-di(4-hexylthien-2-yl)-[1,2,5]thiadiazolo[3,4-g]quinoxalines (DDTQ) are prepared by the palladium-catalyzed Suzuki coupling reaction. The obtained polymers are readily soluble in common organic solvents. The thin solid films of the polymers absorb light from 300 to 840 nm with two absorbance peaks at around 380 and 710 nm. Electroluminescent peaks are between 0.8 and 0.9 μm based on the polymers. The maximal external quantum efficiency reaches 0.30% with the emission peak at 824 nm from PFO-DDTQ1 based devices. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 3007–3013, 2008

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