Recoverable reusable polyisobutylene (PIB)-Bound ruthenium bipyridine (Ru(PIB-bpy)3Cl2) photoredox polymerization catalysts

Nilusha Priyadarshani, Yannan Liang, Jakkrit Suriboot, Hassan S. Bazzi, David E. Bergbreiter

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Polyisobutylene (PIB)-bound ruthenium bipyridine [Ru(PIB-bpy) 3]2+ metal complexes were prepared from PIB ligands formed by alkylation of 4,4′-dimethylbipyridine with polyisobutylene bromide. The product Ru(PIB-bpy)3Cl2 complexes with at least one PIB ligand per bipyridine unit function as soluble recyclable photoredox catalysts in free radical polymerization of acrylate monomers under visible light irradiation at 25 C with ethyl 2-bromoisobutyrate as the initiator in the presence of diisopropylethylamine. The polyacrylate products contained only about 1 ppm Ru contamination. This PIB-bound catalyst was recyclable and showed about 50-fold less Ru leaching as compared to Ru leaching in a polymerization catalyzed by the low molecular weight Ru catalyst, Ru(bpy)3(PF 6)2.

Original languageEnglish
Pages (from-to)571-574
Number of pages4
JournalACS Macro Letters
Volume2
Issue number7
DOIs
Publication statusPublished - 2013

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Ruthenium
Polymerization
Leaching
Catalysts
Ligands
Alkylation
Free radical polymerization
Metal complexes
Polyacrylates
Contamination
Monomers
Molecular weight
Irradiation
Coordination Complexes
Bromides
polyisobutylene

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Recoverable reusable polyisobutylene (PIB)-Bound ruthenium bipyridine (Ru(PIB-bpy)3Cl2) photoredox polymerization catalysts. / Priyadarshani, Nilusha; Liang, Yannan; Suriboot, Jakkrit; Bazzi, Hassan S.; Bergbreiter, David E.

In: ACS Macro Letters, Vol. 2, No. 7, 2013, p. 571-574.

Research output: Contribution to journalArticle

Priyadarshani, Nilusha ; Liang, Yannan ; Suriboot, Jakkrit ; Bazzi, Hassan S. ; Bergbreiter, David E. / Recoverable reusable polyisobutylene (PIB)-Bound ruthenium bipyridine (Ru(PIB-bpy)3Cl2) photoredox polymerization catalysts. In: ACS Macro Letters. 2013 ; Vol. 2, No. 7. pp. 571-574.
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