Synthesis of quinoline based heterocyclic compounds for blue lighting application

Vinod Kumar, Mukut Gohain, Johannes H. Van Tonder, S. Ponra, B. C.B. Bezuindenhoudt, O. M. Ntwaeaborwa, H. C. Swart

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


2,4-Diphenylquinoline (DPQ), derivatives 6-chloro-2,4-diphenylquinoline (DPQ-Cl) and 4′,6-dichloro-2,4-diphenylquinoline (DPQ-Cl2) were synthesized using a three-component domino reaction. The DPQ, DPQ-Cl and DPQ-Cl2 were characterized by nuclear magnetic resonance spectroscopy, scanning electron microscopy, thermogravimetric analysis (TGA). Fourier transformed infra-red spectroscopy, X-ray photoelectron spectroscopy (XPS), Ultraviolet-visible (UV-vis) spectroscopy and photoluminescence spectroscopy. The TGA results showed that the DPQ was more thermally stable with respect to the DPQ-Cl and DPQ-Cl2. The synthesized organic phosphors showed bright emission in the blue region under an UV excitation wavelength of 325 nm with the power of 18 mW. These organic phosphors were found to be efficient candidate and may be used in organic blue light emitting devices.

Original languageEnglish
Pages (from-to)275-281
Number of pages7
JournalOptical Materials
Publication statusPublished - Dec 2015
Externally publishedYes


  • Blue emission
  • Diphenylquinoline
  • NMR
  • XPS

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Computer Science
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering


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