아세토니트릴/TBADS 용액에서의 폴리피롤의 전기중합

민경선; 김재경; 이회우; 김정엽

Polymer(Korea), Vol.17, No.3, 301-307, May, 1993

Export Citation

아세토니트릴/TBADS 용액에서의 폴리피롤의 전기중합

Electrochemical Polymerization of Pyrrole in Acetonitrile/TBADS Solution

민경선, 김재경, 이회우, 김정엽

초록

긴 지방족기가 있는 계면활성제로서 유기용매에 용해되는 새로운 전해질인 테트라부틸암모니움 도데실설페이트(TBADS)를 합성하였으며, 이를 전해질로 사용하여 아세토니트릴(AN) 용매에서 전기중합한 폴리피롤 필름은 전기전도도가 110S/cm이며, 전기화학적 가역성도 우수하여 순환전류 전위곡선에서 산화와 환원피크의 차가 110mv밖에 되지 않았다. 인장강도간 6.08kg/mm²이고 신률이 11.2%가 되어 무기음이온을 도판트로 사용하였을 때보다 훨씬 우수한 기계적 강도를 나타내었다. 또한 수용액하에서 도데실설페이트를 도판트로 했을 때의 폴리피롤 필름보다 우수한 전기특성 필름을 얻었다.

A new electrolyte, tetrabutylammonium dodecylsulfate(TBADS), which is a surfactant with a long aliphatic chain and is soluble in an organic solvent, is synthesized. A polypyrrole film on platinum electrode is formed electrochemically in acetonitrile using TBADS as an electrolyte and shows electrical conductivity of 110S/cm. The electrically conducting polymer reveals a good electrochemical reversibility in cyclic voltammetry and the peak difference in a redox cycle is mere 100mV. The polymer shows tensile strength of 6.08kg/mm² and elongation of 11.2%, which values exceed those of the polymer formed with an inorganic ion as tile dopant. The polypyrrole film formed in the organic system has better electrical and electrochemical properties than a film formed in an aqueous system with the same dopant.

[References]

Su WP, Schrieffer JR, Heeger AJ, Phys. Rev. Lett., 42, 1698 (1979)
Scott JC, Pflunger P, Krounbi M, Street GB, Phys. Rev., B, Condens. Matter, 28, 2140 (1983)
Yoshino K, Kaneto K, Inuish Y, Jpn. J. Appl. Phys., 22, L157 (1983)
Yoshino K, Kaneto K, Mol. Cryst. Liq. Cryst., 121, 247 (1985)
Skotheim TA, Handbook of Conducting Polymers, Marcel Dekker, N.Y. (1986)
Noak RJ, Kitner W, Mark HB, MacDiarmid AG, J. Electrochem. Soc., 125, 232 (1978)
Diaz AF, Kanazawa KK, J. Chem. Soc.-Chem. Commun., 635 (1979)
Iyoda T, Ohtani A, Shimidsu T, Honda K, Synth. Met., 18, 747 (1987)
Wernet W, Monkenbusch M, Wegner G, Mol. Cryst. Liq. Cryst., 118, 193 (1985)

[Referenced By]

[1] Su WP, Schrieffer JR, Heeger AJ, Phys. Rev. Lett., 42, 1698 (1979)

[2] Scott JC, Pflunger P, Krounbi M, Street GB, Phys. Rev., B, Condens. Matter, 28, 2140 (1983)

[3] Yoshino K, Kaneto K, Inuish Y, Jpn. J. Appl. Phys., 22, L157 (1983)

[4] Yoshino K, Kaneto K, Mol. Cryst. Liq. Cryst., 121, 247 (1985)

[5] Skotheim TA, Handbook of Conducting Polymers, Marcel Dekker, N.Y. (1986)

[6] Noak RJ, Kitner W, Mark HB, MacDiarmid AG, J. Electrochem. Soc., 125, 232 (1978)

[7] Diaz AF, Kanazawa KK, J. Chem. Soc.-Chem. Commun., 635 (1979)

[8] Iyoda T, Ohtani A, Shimidsu T, Honda K, Synth. Met., 18, 747 (1987)

[9] Wernet W, Monkenbusch M, Wegner G, Mol. Cryst. Liq. Cryst., 118, 193 (1985)