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Hyperbranched Conductive Polymers Constituted of Triphenylamine

Published online by Cambridge University Press:  10 February 2011

S. Tanaka ,
K. Takeuchi ,
M. Asai ,
T. Iso  and
M. Ueda
S. Tanaka
Affiliation:
National Institute of Materials and Chemical Research, 1–1 Higashi, Tsukuba 305–8565 JAPAN, [email protected]
K. Takeuchi
Affiliation:
National Institute of Materials and Chemical Research, 1–1 Higashi, Tsukuba 305–8565 JAPAN, [email protected]
M. Asai
Affiliation:
National Institute of Materials and Chemical Research, 1–1 Higashi, Tsukuba 305–8565 JAPAN, [email protected]
T. Iso
Affiliation:
Ibaraki Prefectural Industry and Technology Center, 189 Kanakubo, Yuhki 307–0015 JAPAN
M. Ueda
Affiliation:
Tokyo Institute of Technology, Ohokayama, Meguro-ku, Tokyo 152–8552 JAPAN
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Abstract

A hyperbranched conjugated polymer containing triphenylamine was prepared by the Grignard reaction of tris(4-bromophenyl)amine 1, via the coupling of N, N-bis(4-bromophenyl)-N-(4-bromomagnesiophenyl)amine 2 with the catalytic amount of Ni(acac)2. Grignard reagent 2 reacted as an AB2-type monomer to give hyperbranched conjugated polymer 3 in a one-step process. Polymer 3 was also obtained via the Pd-catalyzed coupling of N, N-bis(4-bromophenyl)-4-animobenzeneboronic acid 4. Polymer 3 had an average molecular weight of 4.0–6.3×103 and was found to be soluble in organic solvents such as THF and CHC13. A cast film had an anodic peak at 0.95–1.20 V vs. Ag wire. It was dark blue above the oxidation potential and brown-yellow in the neutral state. When polymer 3 was doped with iodine, its conductivity rose to 0.8–3.0 S/cm

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 600: Symposium FF – Electroactive Polymers , 1999 , 179
Copyright
Copyright © Materials Research Society 2000

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