TY - JOUR
T1 - Enhancement of the growth of polymer brushes via ATRP initiated from ions-releasing indium tin oxide substrates
AU - Gruszkiewicz, Anna
AU - Słowikowska, Monika
AU - Grześ, Gabriela
AU - Wójcik, Artur
AU - Rokita, Joanna
AU - Fiocco, Alice
AU - Wytrwal-Sarna, Magdalena
AU - Marzec, Mateusz
AU - Trzebicka, Barbara
AU - Kopeć, Maciej
AU - Wolski, Karol
AU - Zapotoczny, Szczepan
PY - 2019/3/1
Y1 - 2019/3/1
N2 - Surface-initiated atom transfer radical polymerization (SI-ATRP) was used for grafting of model brushes (PNIPAM and PMMA) from various planar surfaces: indium tin oxide (ITO), glass and silicon oxide. All polymerizations for a given monomer were conducted at the same conditions in the presence of a sacrificial initiator. Both PNIPAM and PMMA brushes were found to be thicker when grafted from ITO with respect to the other surfaces demonstrating a significant influence of the ITO substrate on SI-ATRP kinetics. It was shown that ITO significantly increases the polymerization rate of the grafted chains due to not negligible desorption of metal ions which may undergo redox reactions also with the copper catalyst. Moreover, the molar masses of the grafted PNIPAM and PMMA chains were found generally larger (3–6 times for PNIPAM) than the ones of free polymers generated in solution, regardless of the substrate type, indicating significant differences in the rates of SI-ATRP and ATRP in the solution.
AB - Surface-initiated atom transfer radical polymerization (SI-ATRP) was used for grafting of model brushes (PNIPAM and PMMA) from various planar surfaces: indium tin oxide (ITO), glass and silicon oxide. All polymerizations for a given monomer were conducted at the same conditions in the presence of a sacrificial initiator. Both PNIPAM and PMMA brushes were found to be thicker when grafted from ITO with respect to the other surfaces demonstrating a significant influence of the ITO substrate on SI-ATRP kinetics. It was shown that ITO significantly increases the polymerization rate of the grafted chains due to not negligible desorption of metal ions which may undergo redox reactions also with the copper catalyst. Moreover, the molar masses of the grafted PNIPAM and PMMA chains were found generally larger (3–6 times for PNIPAM) than the ones of free polymers generated in solution, regardless of the substrate type, indicating significant differences in the rates of SI-ATRP and ATRP in the solution.
KW - ATRP
KW - Grafting density
KW - Indium tin oxide
KW - Polymer brushes
UR - http://www.scopus.com/inward/record.url?scp=85056232723&partnerID=8YFLogxK
U2 - 10.1016/j.eurpolymj.2018.11.004
DO - 10.1016/j.eurpolymj.2018.11.004
M3 - Article
AN - SCOPUS:85056232723
SN - 0014-3057
VL - 112
SP - 817
EP - 821
JO - European Polymer Journal
JF - European Polymer Journal
ER -