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Park, Lee Soon
School of Materials Science and Engineering
Research Interests
  • Flexible OLED new materials, process and fabrication
  • Touch Screen Panel(TSP) new materials and process new materials and process
  • Nano-materials synthesis and application (Ag nano-wire and metal mesh electrode)

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Synthesis and electroluminescent properties of conjugated copolymer containing phenothiazine and phenanthridine unit

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Title
Synthesis and electroluminescent properties of conjugated copolymer containing phenothiazine and phenanthridine unit
Author
Han, Yoon SooKim, Sang DaeKwon, YounghwanChoi, Kyu-HanPark, Lee Soon
Keywords
azomethine, hole transporting, phenothiazine, phenyl phenanthridine, polymer light emitting diode
Issue Date
2006-12
Publisher
TAYLOR & FRANCIS LTD
Citation
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.459, no., pp.119 - 128
Abstract
Conjugated copolymer, poly[N-(2-ethylhexyl)phenothiazine-alt-6-phenyl phenanthridine] [poly(PZ-PTI)], with azomethine linkage was synthesized by Schiff-base reaction. This new conjugated copolymer exhibited improved solubility in common organic solvents due to the presence of alkyl side chains on phenothiazine rings as well as polar azomethine groups in main chains. Single-layered PLED made with poly(PZ-PTI) as an emitting layer exhibited EL (emission) at 572 nm (yellow; color coordinates of x = 0.51, y = 0.48). Double-layered PLED fabricated with the synthesized polymer as an emitting layer and Alq(3) as an electron transporting layer exhibited enhanced EL emission and efficiency compared to that of single-layered PLED. With increasing the thickness of Alq(3) layer in double-layered PLED the emission peak gradually shifted to the single-layered PLED made with only Alq(3) as an emitting layer, confirming good hole transporting behaviour of the synthesized conjugated copolymer
URI
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DOI
10.1080/15421400600922133
ISSN
1542-1406
Appears in Collections:
MSE_Journal Papers
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