Synthesis of metal complex-thermosensitive polyether hybrids and their thermosensitive and redox properties

Rvohei Tsuda, Hisashi Kokubo, Shin Ichiro Imabayashi, Masayoshi Watanabe

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)

Abstract

We synthesize terpyridine(Tpy)-terminated thermosensitive poly(ethyl glycidyl ether)-block-poly(ethylene oxide) by ring-opening anionic polymerization, followed by modification of Tpy terminal group. Coordination reaction of one Ru2+ and two Tpy-terminated copolymers yields metal complex-thermosensitive polyether hybrids. The cloud point (Tc) of thermosensitive block is revealed to be around 20 °C by dye solubilization method with 1,6-diphenyl-1,3,5-hexatriene. The redox response of Ru(Tpy-) 23+/2+ appears at +960 mV vs. Ag|AgCI|saturated NaCI at 10 °C. Temperatures above 20-25 °°C, however, a coil-globule transition of the PEGE block brings about the positive shift in the redox potential and saturation of the oxidation current for the Ru(Tpy-) 23+/2+ unit.

Original languageEnglish
Number of pages1
Publication statusPublished - 2006 Oct 19
Externally publishedYes
Event55th SPSJ Annual Meeting - Nagoya, Japan
Duration: 2006 May 242006 May 26

Conference

Conference55th SPSJ Annual Meeting
CountryJapan
CityNagoya
Period06/5/2406/5/26

Keywords

  • Anionic polymerization
  • Metal complex
  • Redox reaction
  • Self organization
  • Terpyridine
  • Thermosensitive polymer

ASJC Scopus subject areas

  • Engineering(all)

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