Block copolymers of N-vinyl carbazole and alpha,omega-dihydroxy polydimethylsiloxane

Akar A., KIZILCAN N., Ustamehmetoglu B., COLAK D., SARAC A. S., COLAK C.

JOURNAL OF APPLIED POLYMER SCIENCE, cilt.106, sa.6, ss.3694-3702, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 106 Sayı: 6
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1002/app.26937
  • Dergi Adı: JOURNAL OF APPLIED POLYMER SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3694-3702
  • Anahtar Kelimeler: block copolymers, conducting polymers, fluorescence, polylsiloxanes and radical polymerization, OXIDATIVE POLYMERIZATION, REDOX POLYMERIZATION, VINYLCARBAZOLE, POLYPYRROLE, ACRYLAMIDE
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

The redox system of ceric ammonium nitrate (Ce4+) and alpha,pi-dihydroxy polydimethylsiloxane (DH.PDMS) was used to polymerize N-vinyl carbazole (NVCz) to produce poly(N-vinylcarbazole)-b-alpha,pi-dihydroxy polydimethylsiloxane(PNVCz-b-DH.PDMS). The ratio of NVCz/ceric salt/DH.PDMS has an important effect on the properties of formed copolymers. White insulating PNVCz-b-PDMS copolymers with high fluorescence intensity are produced if the ratio of ceric salt/ NVCz is below 0.2. Green conductive PNVCz-b-PDMS copolymers are produced if this ratio is well above 0.2. The concentration and the type of DH.PDMS affected the polymerization yield. PNVCz-b-DH.PDMS copolymers were also prepared by electroinduced polymerization in the presence of catalytic amount of Cc (4+) in a divided electrochemical cell where Ce3+ is readily oxidized to Ce4+ at the anode. White insulating PNVCz-b-DH.PDMS copolymers show higher contact angle value and lower Tg values than of white poly(N-vinyl carbazole) (PNVCz).