Synthesis of T-shaped rod-coil copolymer from oligo(p-phenylenevinylene) and poly(ethylene oxide) and its self-assembling behavior

Noriyuki Hiraga, Toshihiko Harada, Takeshi Mori, Keiji Minagawa, Masami Tanaka

Research output: Contribution to conferencePaper

Abstract

T-shaped rod-coil molecules consisting of oligo(p-phenylenevinylene)(OPV) as rigid polymer and poly(ethylene oxide)(PEO) as flexible one were synthesized according to Scheme 1. Coupling reaction of 1a and 2 has not proceeded at all. Then coupling reaction between 1b and 2 was carried out. As a result, 3 of light yellow tar was obtained. The less reactivity of la was due to the large steric hindrance of large atomic radius of I. The synthesis of the T-shaped rod-coil molecules(4a, 4b) were carried out by Heck reaction between styrene and 3a, 3b. As a result, 4a and 4b were obtained. However, about 10 % of impurities were included. Purification of 4a and 4b by column chromatography were difficult. Therefore, in order to solve this problem, we considered the following synthetic scheme; first, synthesizing OPV and then, introducing PEO.

Original languageEnglish
Number of pages1
Publication statusPublished - Dec 1 2005
Externally publishedYes
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: May 25 2005May 27 2005

Other

Other54th SPSJ Annual Meeting 2005
CountryJapan
CityYokohama
Period5/25/055/27/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Hiraga, N., Harada, T., Mori, T., Minagawa, K., & Tanaka, M. (2005). Synthesis of T-shaped rod-coil copolymer from oligo(p-phenylenevinylene) and poly(ethylene oxide) and its self-assembling behavior. Paper presented at 54th SPSJ Annual Meeting 2005, Yokohama, Japan.