• 제목/요약/키워드: polythiophene derivatives

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전기적 활성을 갖는 폴리티오펜 유도체들의 합성과 생체계면에의 응용 (I) (Synthesis of Electroactive Polythiophene Derivatives and Its Application for Biointerface (I))

  • 정선형;배진영;김지흥;정동준
    • 폴리머
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    • 제26권1호
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    • pp.28-36
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    • 2002
  • 본 연구에서는 바이오칩 등에 응용 가능한 전도성 고분자 필름을 제조하기 위해 3-triophene acetic acid을 선택하여, 쉽게 전기적으로 산화되어 전기적 활성을 나타내는 고분자들을 형성하였다. 3-Thiophene acetic acid에 있는 카르복실기의 보호기들은 solid state에서 쉽게 제거되어질 수 있고, 그 결과 반응성 카르복실기가 전기적 활성을 나타내는 고분자 표면 위에 재생되어질 수 있었다. 즉, 카르복실기의 보호를 통한 전기중합과 뒤이은 보호기의 제거로 반응성인 카르복실기를 갖는 새로운 고분자 담체를 제조할 수 있었고, 기존의 방법으로 합성한 macromonomer를 필름 표면에 도입하여 전기적 활성을 나타내며 동시에 고분자 전해질이 도입된 전도성 고분자 필름을 얻었다. 합성한 전도성 단량체들과 macromonomer의 도입여부는 FT-IR과 $^1H-NMR$ 및 ESCA측정으로 확인하였고, 전극표면에 형성된 필름들의 형태는 SEM을 통해서 관찰하였다. 전기적 활성은 cyclic voltammogram(CV)을 통하여 확인하였으며, 얻어진 고분자 필름들은 0.7~0.9 V의 영역에서 전형적인 poly(3-alkylthiophene)의 전기 화학적 거동을 나타내었다.

Functional Polythiophene Bearing Hydroxyethyl Groups and Their Derivatives

  • Kim Hyun-Chul;Kim Jong-Seong;Baek Sung-Sik;Ree Moon-Hor
    • Macromolecular Research
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    • 제14권2호
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    • pp.173-178
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    • 2006
  • Poly(3-(2-hydroxyethyl)thiophene) (P3HET) was synthesized using oxidative coupling polymerization that involved the protecting and deprotecting of hydroxyl groups but not the chlorine substitution or oxidative decomposition of the hydroxyl groups. The resulting P3HET exhibited good solubility in aprotic solvents, in contrast to the insoluble polymer product synthesized directly from the monomer, 3-(2-hydroxyethyl)thiophene (3HET). P3HET had low conductivity due to the strong hydrogen bonding of its hydroxyl groups. The ester-functionalized poly(3-(2-acetoxyethyl)thiophene) and poly(3-(4-pentylbenzoateethyl)thiophene) were also prepared with reasonably high molecular weights in order to examine how this functionalization modified the physical and chemical properties of P3HET. These polymers exhibited better solubility in common solvents and higher conductivity than P3HET. All these polymers exhibited bathochromic shifts of their film state absorption maxima with respect to those found in the UV-visible spectra of their solution phases. The extent of the bathochromic shift was found to vary with the lengths of the side chains of the ester-functionalized polymers.

Physical effect of annealing conditions on soluble organic semiconductor for organic thin film transistors

  • Kim, Dong-Woo;Kim, Doo-Hyun;Kim, Keon-Soo;Kim, Hyung-Jin;Lee, Dong-Hyuck;Hong, Mun-Pyo
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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    • pp.268-269
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    • 2008
  • We have examined the effect of physical drying and annealing conditions for the soluble derivatives of polythiophene as p-type channel materials of organic thin film transistors (OTFTs) in our special designed drying system; performances of the jetting-processed OTFTs can be improved more than 10 times just by optimizing the physical conditions of drying and annealing.

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Fabrication of soluble organic thin film transistor with ammonia ($NH_3$) plasma treatment

  • Kim, Dong-Woo;Kim, Doo-Hyun;Kim, Keon-Soo;Kim, Hyoung-Jin;Choi, Hong;Lee, Dong-Hyeok;Hong, Mun-Pyo
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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    • pp.566-567
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    • 2009
  • We have examined the silicon nitride ($SiN_x$) as gate insulator with the ammonia ($NH_3$) plamsa treatment for the soluble derivatives of polythiophene as p-type channel materials of organic thin film transistors (OTFTs). Fabrications of the jetting-processed OTFTs with $SiN_x$ as gate insulator by $NH_3$ plasma treatment can be similar to performance of OTFTs with silicon dioxide ($SiO_2$) insulator.

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