Photoreactive hole-transporting polymer bearing oxetane moieties and its application to green polymer light-emitting diodes

Min Ju Cho, Myung Hee Kim, Kyu Nam Kim, Jung Il Jin, Young Min Kim, Young Wook Park, Byeong Kwon Ju, Dong Hoon Choi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A new hole-transporting polymer was prepared by the copolymerization of 9-(4-vinyl-benzyl)-9H-carbazole and 3-methyl-3-(4-vinyl-benzyloxymethyl)-oxetane in the presence of α,α′-azobisisobutyronitrile (AIBN). The latter contains an oxetane unit that is cationically photopolymerizable. It was characterized by NMR, GPC, IR spectroscopy, TGA, and differential scanning calorimetry (DSC). Multilayer polymer light-emitting diodes (PLEDs) were fabricated layer by layer by using the spin-coating method with an organic solution of a photoreactive copolymer. Organic soluble poly[2-(carbazol-9-yl)-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (CzEh-PPV) that carries hole-transporting carbazole pendants was also synthesized and employed as a green-emitting material in PLEDs. After UV illumination for photoreaction in the new photoreactive oxetane-based copolymer (VCz-Ox), we could spin coat the CzEh-PPV solution for the next layer. The hole-transport capability of the copolymer was evaluated in multilayer PLEDs that were fabricated to test the device performances.

Original languageEnglish
Pages (from-to)785-789
Number of pages5
JournalSynthetic Metals
Volume158
Issue number21-24
DOIs
Publication statusPublished - 2008 Dec 1

Fingerprint

Bearings (structural)
Light emitting diodes
Polymers
light emitting diodes
copolymers
Copolymers
carbazoles
polymers
Multilayers
Spin coating
copolymerization
Copolymerization
coating
Differential scanning calorimetry
Infrared spectroscopy
heat measurement
Lighting
illumination
Nuclear magnetic resonance
nuclear magnetic resonance

Keywords

  • Carbazole
  • Cationic photopolymerization
  • Hole-transport materials
  • Photoreactive

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Photoreactive hole-transporting polymer bearing oxetane moieties and its application to green polymer light-emitting diodes. / Cho, Min Ju; Kim, Myung Hee; Kim, Kyu Nam; Jin, Jung Il; Kim, Young Min; Park, Young Wook; Ju, Byeong Kwon; Choi, Dong Hoon.

In: Synthetic Metals, Vol. 158, No. 21-24, 01.12.2008, p. 785-789.

Research output: Contribution to journalArticle

Cho, Min Ju ; Kim, Myung Hee ; Kim, Kyu Nam ; Jin, Jung Il ; Kim, Young Min ; Park, Young Wook ; Ju, Byeong Kwon ; Choi, Dong Hoon. / Photoreactive hole-transporting polymer bearing oxetane moieties and its application to green polymer light-emitting diodes. In: Synthetic Metals. 2008 ; Vol. 158, No. 21-24. pp. 785-789.
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