Photoinduced Metal-Free Atom Transfer Radical Polymerization Using Highly Conjugated Thienothiophene Derivatives


Kutahya C., Allushi A., Isci R., Kreutzer J., Öztürk T., Yilmaz G., ...More

MACROMOLECULES, vol.50, no.17, pp.6903-6910, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 50 Issue: 17
  • Publication Date: 2017
  • Doi Number: 10.1021/acs.macromol.7b01335
  • Journal Name: MACROMOLECULES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.6903-6910
  • Istanbul Technical University Affiliated: Yes

Abstract

Photoinduced metal-free atom transfer radical polymerization (ATRP) activated by highly conjugated electron-rich thienothiophene derivatives, namely 4-[2-(4-diphenylaminophenyl)-thieno[3,2-b]thiophen-3-yl]benzonitrile (TT-TPA), 4-[2,5-bis(4-diphenylaminophenyl)-thieno[3,2-b]thiophen-3-yl]benzonitrile (TPA-TT-TPA), 4-(2-(4-(1,2,2-triphenylvinyl)phenyl) thieno[3,2-b]-thiophen-3-yl)benzonitrile (TT-TPE) and 4-(2,5-bis(4-(1,2,2-triphenylvinyl)phenyl)thieno[3,2-b]thiophen-3- yl)benzonitrile (TPE-TT-TPE) is reported. Polymerization of methyl methacrylate (MMA) is efficiently activated and deactivated with light, forming polymers with controlled the molecular weight characteristics, dispersity, and chain end functionality. Polymerization studies and DFT calculations revealed that TT-TPA is the most efficient activator due to the favorable thermodynamic properties.