Hyperbranched Polymers by Visible Light Induced Self-Condensing Vinyl Polymerization and Their Modifications

Bektas S., Çiftçi M., Yagci Y.

MACROMOLECULES, vol.46, no.17, pp.6751-6757, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 46 Issue: 17
  • Publication Date: 2013
  • Doi Number: 10.1021/ma401534w
  • Journal Name: MACROMOLECULES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.6751-6757
  • Istanbul Technical University Affiliated: Yes


Visible light induced self-condensing vinyl polymerization is explored using 2-bromoethyl methacrylate (2-BEMA) and methyl methacrylate (MMA) as inimer and comonomer, respectively, in the presence of dimanganese decacarbonyl (Mn-2(CO)(10)) for the preparation of hyper-branched polymers. Upon photoexcitation in the visible range, Mn-2(CO)(10) undergoes irreversible decomposition leading to the formation of initiating radicals through bromine abstraction from 2-BEMA. Depending on the concentrations of 2-BEMA and Mn-2(CO)(10) and irradiation time, hyperbranched polymers with different branching density and cross-linked polymers were formed. The resulting polymers possess unreacted bromide groups in the structure which allow postfunctionalization through visible light photopolymerization and Cu(I)-catalyzed click reactions.