Synthesis and characterization of a double photochromic initiator for cationic polymerization

KREUTZER J., DEMIR K. D., Yagci Y.

EUROPEAN POLYMER JOURNAL, vol.47, no.4, pp.792-799, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47 Issue: 4
  • Publication Date: 2011
  • Doi Number: 10.1016/j.eurpolymj.2010.09.025
  • Journal Name: EUROPEAN POLYMER JOURNAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.792-799
  • Istanbul Technical University Affiliated: Yes

Abstract

A novel cationic photoinitiator namely, 2-benzyl-2-(N,N-dimethyl-2-oxo-2-phenylethyl) ammonium hexafluoroantimonate-1-(4-morpholinophenyl)-butane-1-one (BDMPP(+) SbF(6)(-)), carrying two photochromophoric groups was synthesized and characterized. Theoretical absorption characteristics of the salt were studied and compared with those obtained experimentally. Photoinitiation activity of this salt was demonstrated by polymerization of various monomers at lambda = 350 nm. Upon irradiation by UV light, cationic species formed from homolytic dissociation followed by electron transfer or directly by heterolytic scission initiate cationic polymerization. (C) 2010 Elsevier Ltd. All rights reserved.