• Title/Summary/Keyword: Thiophene

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DEPOSITION OF BUFFER LAYER USING PLASMA POLYMERIZATION TECHNQUE FOR OLED DEVICE (플라즈마 중합법에 의한 OLED 소자용 버퍼층의 제작)

  • Lim, J.S.;Kim, H.G.;Kim, Y.H.;Lim, Y.C.;Jung, G.H.;Lee, B.S.;Shin, P.K.;Lee, D.C.
    • Proceedings of the KIEE Conference
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    • 2004.07c
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    • pp.1567-1569
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    • 2004
  • 유기발광 소자의 전공 수송층 재료로 많이 쓰이고 있는 N,N'-diphenyl-N,N'-(3-methylphenyl)-1,1'-biphenyl-4-4'-diamine(TPD)는 OLED소자가 연속적으로 작동하게 되면 TPD박막이 결정화되는데, 이러한 결정화는 디스플래이 소자에 dark spot(흑점)의 문제점을 가져왔다. 이러한 원인을 제거하기 위해서 ITO위에 PolyThiophene을 완충층으로 제작함으로써, OLED 소자의 효율에 미치는 영향은 크다고 할수 있다. 자체 제작한 플라즈마 중합장치의 중합조건과 중합체 PolyThiophene의 분자구조를 알아보았다.

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Effects of Fused Thiophene Bridges in Organic Semiconductors for Solution-Processed Small-Molecule Organic Solar Cells

  • Lee, Jae Kwan;Lee, Sol;Yun, Suk Jin
    • Bulletin of the Korean Chemical Society
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    • v.34 no.7
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    • pp.2148-2154
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    • 2013
  • Three push-pull organic semiconductors, TPA-$Th_3$-MMN (1), TPA-ThTT-MMN (2), and TPA-ThDTT-MMN (3), comprising a triphenylamine donor and a methylene malononitrile acceptor linked by various ${\pi}$-conjugated thiophene units were synthesized, and the effects of the ${\pi}$-conjugated bridging unit on the photovoltaic characteristics of solution-processed small-molecule organic solar cells based on these semiconductors were investigated. Planar bridging units with extended ${\pi}$-conjugation effectively facilitated intermolecular ${\pi}-{\pi}$ packing interactions in the solid state, resulting in enhanced $J_{sc}$ values of the SMOSCs fabricated with bulk heterojunction films.

Studies on the effect of the intermolecular hydrogen bonding on the vibrational frequencies of the acetonitrile under matrix isolation conditions at liquid-$N_2$ temperature (액체질소온도에서 매트릭스에 의해 격리된 아세토니트릴 분자의 진동주파수에 미치는 분자간 수소결합의 영향에 관한 연구)

  • Ma, Keum Ja;Jeong, Jong Hak;Jeong, Gi Ho
    • Analytical Science and Technology
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    • v.7 no.1
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    • pp.79-89
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    • 1994
  • Interactions between the acetonitrile and other organic molecules such as furan, pyrrole, pyrrolidine, thiophene, tetrahydrothiophene and acetaldehyde was studied with the infrared absorption spectroscopy under matrix isolation conditions. Xe was used as a major matrix material. Acetonitrile showed strong interactions with pyrrole and thiophene, and little interactions with pyrrolidine and acetaldehyde.

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Hyper Functionalized Nanoparticle Technology and their Applications

  • Lee, Sun-Jong;Jung, Yeon-Jae;Lee, Jung-Min;Lee, Jun-Young;Kim, Jung-Hyun
    • Proceedings of the Polymer Society of Korea Conference
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    • 2006.10a
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    • pp.83-84
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    • 2006
  • In aqueous phase, we directly prepared conducting and photoluminescent nano-structured particles by oxidation polymerization. Thiophene(PT) was initiated by $FeCl_{3}/H_{2}O_{2}$ (catalyst/oxidant) combination system. And, polydispersed core-shell poly(styrene/thiophene) and polyaniline(PANI)-coated multi core-shell polystyrene latex particles were successfully prepared by oxidative and radical polymerization. The resulting latex particles have fine improved luminescence and conductive efficiency and dispersion state due to the PT and PANI shell. Hyper functionalized nanoparticle would be expected to increase the processibility in various electrical and electro-optical fields.

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POTENT INHIBITION OF HUMAN CYTOCHROME P450 1 ENZYMES BY DIMETHOXYPHENYL VINYL THIOPHENE.

  • Lee, Sangk wang;Kim, Sanghee;Kim, Mie young;Chun, Young-Jin
    • Proceedings of the Korean Society of Toxicology Conference
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    • 2002.05a
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    • pp.92-92
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    • 2002
  • Recently we have reported that various hydroxystilbenes show strong inhibition of human P450 1 activity. A series of synthetic trans-stilbene derivatives were prepared and their inhibitory potentials were evaluated with the bacterial membrane of recombinant human P450 1A1, 1A2 or 1B1 coexpressed with human P450/NADPH-450 reductase to find new candidates for cancer chemoprevention.(omitted)

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PREPARATION OF ELECTROCONDUCTIVE POLY(THIOPHENE-CO-PYRROLYL UNDECANOIC ACID) LANGMUIR-bLODGETT FILMS (Poly(thiophene-co-pyrrolyl undecanoic acid) LB film 제조 및 성질)

  • 장지임;박연흠;김건형;조원호
    • Proceedings of the Korean Fiber Society Conference
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    • 2003.10b
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    • pp.159-160
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    • 2003
  • 금속과 유사한 전도성을 가진 공액이중결합의 전기전도성 고분자를 사용한 Langmuir-Blodett (LB) 막의 제조에 관한 연구는 그 범위가 넓으며, 지금까지 많은 연구 논문들이 보고되고 있다[1]. 특히 전도성이 뛰어난 polyaniline, polypyrrole, polythiophene은 전도성과 stability가 우수하여 전기 전도성 LB 막에 대한 연구들이 많이 진행되어 왔다[2]. 본 연구에서는 이와 같은 전기전도성 유기물질을 사용한 전도성 LB막이 수직방향에 비해 수평방향의 전기전도도가 크다는 전기적 장점을 이용하여 전도성 LB막을 제조하기 위해 새로운 전도성 고분자를 합성하여 전기 전도성을 띄는 LB 막을 제조하였다[3,4]. (중략)

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Synthesis and Herbicidal Activities of 5-benzyloxymethyl-3-(thiophen-4-yl)-1,2-isoxazoline derivatives (5-Benzyloxymethyl-3-(thiophen-4-yl)-1,2-isoxazoline 유도체의 합성과 제초활성)

  • Song, Jong-Hwan;Jeon, Dong-Ju
    • The Korean Journal of Pesticide Science
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    • v.12 no.2
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    • pp.197-200
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    • 2008
  • Novel series of 5-benzyloxymethyl-3-(thiophen-5-yl)-1,2-isoxazoline derivatives were designed and synthesized, and their herbicidal activities to diverse weeds were tested under flooded paddy conditions in a greenhouse. Among them, some compounds (3d-f) showed good activities to dominant weeds such as Echinocloa orizycola and Monochoria vaginalis presl. at a rate of 0.063 kg/ha without the serious injury toward rice.