Synthesis of carbazole-containing PPV and its application to the electroluminescent devices

Jae Sung Lee, Eung Ju Oh, Jae Young Park, Moo Whan Shin, In Haeng Cho

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Carbazole-containing PPV (CC-PPV) was chemically synthesized and demonstrated to be electroluminescent for application to a light emitting diode (LED). Soluble CC-PPV copolymer was prepared from dialdehyde monomer and diphosphonium salt in a mixed solvent (ethanol/chloroform) by the well-known Wittig reaction. The UV-Vis absorption spectrum of CC-PPV copolymer in chloroform has a maximum absorption wavelength at 408 nm, which is caused by the π-π* transition of the conjugated system. In PL spectrum, maximum wavelength of emission was found at 512 nm. From the thermogravimetric analysis (TGA) it was confirmed that the synthesized CC-PPV has a thermal stability up to 180°C. For the fabrication of a LED, the synthesized CC-PPV was dissolved in toluene to prepare an 1.0 wt% solution and the film cast from this solution was demonstrated to be light-emitting at an applied voltage of 3.7 V.

Original languageEnglish
Pages (from-to)186-189
Number of pages4
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume85
Issue number2-3
DOIs
Publication statusPublished - 2001 Aug 22

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Luminescent devices
carbazoles
Chlorine compounds
Light emitting diodes
Copolymers
Wavelength
synthesis
Toluene
Thermogravimetric analysis
Absorption spectra
Chloroform
chloroform
Thermodynamic stability
Ethanol
Monomers
Salts
copolymers
Fabrication
light emitting diodes
Electric potential

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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abstract = "Carbazole-containing PPV (CC-PPV) was chemically synthesized and demonstrated to be electroluminescent for application to a light emitting diode (LED). Soluble CC-PPV copolymer was prepared from dialdehyde monomer and diphosphonium salt in a mixed solvent (ethanol/chloroform) by the well-known Wittig reaction. The UV-Vis absorption spectrum of CC-PPV copolymer in chloroform has a maximum absorption wavelength at 408 nm, which is caused by the π-π* transition of the conjugated system. In PL spectrum, maximum wavelength of emission was found at 512 nm. From the thermogravimetric analysis (TGA) it was confirmed that the synthesized CC-PPV has a thermal stability up to 180°C. For the fabrication of a LED, the synthesized CC-PPV was dissolved in toluene to prepare an 1.0 wt{\%} solution and the film cast from this solution was demonstrated to be light-emitting at an applied voltage of 3.7 V.",
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Synthesis of carbazole-containing PPV and its application to the electroluminescent devices. / Lee, Jae Sung; Oh, Eung Ju; Park, Jae Young; Shin, Moo Whan; Cho, In Haeng.

In: Materials Science and Engineering B: Solid-State Materials for Advanced Technology, Vol. 85, No. 2-3, 22.08.2001, p. 186-189.

Research output: Contribution to journalArticle

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AU - Lee, Jae Sung

AU - Oh, Eung Ju

AU - Park, Jae Young

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AU - Cho, In Haeng

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