Preparation of 3,4-Ethylenedioxythiophene (EDOT) and N-4-butylphenyl-N,Ndiphenylamine (BTPA) Copolymer Having Hole Transport Ability

Jae Ho Sim; Hisaya Sato

Macromolecular Research, Vol.17, No.9, 714-717, September, 2009

Jae Ho Sim^†, and Hisaya Sato¹

R&D Center, NPI Co. Ltd., Wonju-City, Gangwon 220-811, Korea
¹Faculty of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184, Japan

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Hole transport copolymers consisting of 3,4-ethylenedioxythiophene (EDOT) and N-4-butylphenyl-N,Ndiphenylamine (BTPA) were synthesized by oxidative coupling reaction using FeCl3 as an oxidant. These copolymers showed good solubility and their thin films showed sufficient morphological stability. The copolymers showed an absorption maximum around 320 nm. Copolymers had an oxidation peak at approximately 1.03~1.14 V versus the Ag/AgCl electrode. The hole mobility increased with increasing portion of the EDOT unit. The hole mobility of the copolymer containing 57% of the EDOT unit showed the highest mobility of 3×10^(-5) cm2/V·s.

Keywords:hole transport polymer;charge transport;oxidation polymerization;cyclic voltammogram;electro luminescence.

[References]

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Strzelec K, Fugino N, Ha J, Ogino K, Sato H, Macromol. Chem. Phys., 203, 2488 (2002)
Sim JH, Yamada K, Lee SH, Yokokura S, Sato H, Synthetic Met., 157, 940 (2007)
Sim JH, Ueno U, Natori I, Ha JK, Sato H, Synthetic Met., 158, 345 (2008)
Stephan O, Tran-Van F, Chevrot C, Synthetic Met., 131, 31 (2002)

[1] Bert Groenendaal L, Jonas F, Freitag D, Pielartzik H, Reynolds JR, Adv. Mater., 7, 12 (2000)

[2] Ashizawa S, Horikawa R, Okuzaki H, Synthetic Met., 153, 5 (2005)

[3] Kim JY, Jung JH, Lee DE, Joo J, Synthetic Met., 126, 311 (2002)

[4] Miyata S, Nalwa HS, Organic Electroluminescence Materials and Device, Gordon and Breach, Amsterdam (1999)

[5] Son JM, Nakao M, Ogino K, Sato H, Macromol. Chem. Phys., 200, 65 (1999)

[6] Ha JK, Vacha M, Khanchaitit P, Ath-Ong D, Lee SH, Ogino K, Sato H, Synthetic Met., 144, 151 (2004)

[7] Yang Y, Pei Q, Heeger AJ, J. Appl. Phys., 79, 934 (1996)

[8] Louie J, Hartwig JF, Fry AJ, J. Am. Chem. Soc., 119(48), 11695 (1997)

[9] Lin CP, Tsutsui T, Saito S, New Polym. Mater., 4277 (1995)

[10] Kim DU, Aminaka E, Tsutsui T, Saito S, Jpn. Appl. Phys., 34, 6255 (1995)

[11] Kolb ES, Gaudiana RA, Mehta PG, Macromolecules, 29(7), 2359 (1996)

[12] Kraft A, Burn PL, Holmes AB, Bradley DDC, Friend RH, Martens JHF, Synthetic Met., 55, 4163 (1993)

[13] Ogino K, Kanegae A, Yamaguchi R, Sato H, Kurjata J, Macromol. Rapid Commun., 20(3), 103 (1999)

[14] Strzelec K, Fugino N, Ha J, Ogino K, Sato H, Macromol. Chem. Phys., 203, 2488 (2002)

[15] Sim JH, Yamada K, Lee SH, Yokokura S, Sato H, Synthetic Met., 157, 940 (2007)

[16] Sim JH, Ueno U, Natori I, Ha JK, Sato H, Synthetic Met., 158, 345 (2008)

[17] Stephan O, Tran-Van F, Chevrot C, Synthetic Met., 131, 31 (2002)