Poly(ethylene glycol)-Thioxanthone Prepared by Diels-Alder Click Chemistry as One-Component Polymeric Photoinitiator for Aqueous Free-Radical Polymerization

Akat H., Gacal B., Balta D., ARSU N., Yağcı Y.

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, vol.48, no.10, pp.2109-2114, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 10
  • Publication Date: 2010
  • Doi Number: 10.1002/pola.23978
  • Journal Name: JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2109-2114
  • Keywords: aqueous free-radical polymerization, click chemistry, Diels Alder cycloaddition, macrophotoinitiator, photopolymerization, thioxanthone, IN-CHAIN THIOXANTHONE, COINITIATOR AMINE, 1,3-DIPOLAR CYCLOADDITIONS, BLOCK-COPOLYMERS, TERMINAL ALKYNES, PHOTOPOLYMERIZATION, BENZOPHENONE, AZIDES, ATRP, MACROPHOTOINITIATOR
  • Yıldız Technical University Affiliated: Yes

Abstract

Novel water-borne macrophotoinitiator containing thioxanthone (TX) end group was successfully synthesized by using Die Is Alder (DA) [4 + 2] click chemistry strategy. For this purpose, thioxanthone-anthracene (TX-A) and maleimide end-functionalized poly(ethylene glycol) (PEG-MI) were reacted in toluene at reflux temperature for 48 h. The final polymer (PEG-TX) and the intermediates were characterized in detail by spectral analysis. PEG-TX possesses absorption characteristics similar to the parent TX. The one-component photoinitiating nature of the photointiator was demonstrated by photopolymeization of several hydrophilic vinyl monomers, such as acrylic acid, acrylamide, 2-hydroxyethyl acrylate, and 1-vinyl-2-pyrrolidone. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 2109-2114, 2010