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

Rvohei Tsuda, Hisashi Kokubo, Shinichiro Imabayashi, Masayoshi Watanabe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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-) 2 3+/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-) 2 3+/2+ unit.

Original languageEnglish
Title of host publicationPolymer Preprints, Japan
Pages1388
Number of pages1
Volume55
Edition1
Publication statusPublished - 2006
Externally publishedYes
Event55th SPSJ Annual Meeting - Nagoya
Duration: 2006 May 242006 May 26

Other

Other55th SPSJ Annual Meeting
CityNagoya
Period06/5/2406/5/26

Fingerprint

Polyethers
Metal complexes
Coordination reactions
Anionic polymerization
Ring opening polymerization
Polyethylene oxides
Ethers
Copolymers
Dyes
Oxidation
Temperature
Oxidation-Reduction

Keywords

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

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Tsuda, R., Kokubo, H., Imabayashi, S., & Watanabe, M. (2006). Synthesis of metal complex-thermosensitive polyether hybrids and their thermosensitive and redox properties. In Polymer Preprints, Japan (1 ed., Vol. 55, pp. 1388)

Synthesis of metal complex-thermosensitive polyether hybrids and their thermosensitive and redox properties. / Tsuda, Rvohei; Kokubo, Hisashi; Imabayashi, Shinichiro; Watanabe, Masayoshi.

Polymer Preprints, Japan. Vol. 55 1. ed. 2006. p. 1388.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tsuda, R, Kokubo, H, Imabayashi, S & Watanabe, M 2006, Synthesis of metal complex-thermosensitive polyether hybrids and their thermosensitive and redox properties. in Polymer Preprints, Japan. 1 edn, vol. 55, pp. 1388, 55th SPSJ Annual Meeting, Nagoya, 06/5/24.
Tsuda R, Kokubo H, Imabayashi S, Watanabe M. Synthesis of metal complex-thermosensitive polyether hybrids and their thermosensitive and redox properties. In Polymer Preprints, Japan. 1 ed. Vol. 55. 2006. p. 1388
Tsuda, Rvohei ; Kokubo, Hisashi ; Imabayashi, Shinichiro ; Watanabe, Masayoshi. / Synthesis of metal complex-thermosensitive polyether hybrids and their thermosensitive and redox properties. Polymer Preprints, Japan. Vol. 55 1. ed. 2006. pp. 1388
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N2 - 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-) 2 3+/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-) 2 3+/2+ unit.

AB - 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-) 2 3+/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-) 2 3+/2+ unit.

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