A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
A novel method to prepare water dispersible poly(benzimidazobenzophenanthroline) (BBL) by partial substitution of chain ends with poly(ethylene oxide)
Tekijät: Hirvonen SP, Manttari M, Wigren V, Salomaki M, Kvarnstrom C, Tenhu H
Kustantaja: SPRINGER
Julkaisuvuosi: 2011
Journal: Colloid and Polymer Science
Tietokannassa oleva lehden nimi: COLLOID AND POLYMER SCIENCE
Lehden akronyymi: COLLOID POLYM SCI
Numero sarjassa: 9
Vuosikerta: 289
Numero: 9
Aloitussivu: 1065
Lopetussivu: 1072
Sivujen määrä: 8
ISSN: 0303-402X
DOI: https://doi.org/10.1007/s00396-011-2413-0
Tiivistelmä
Poly(benzimidazobenzophenanthroline) (BBL) was prepared according to literature method and modified with poly(ethylene oxide) in a one pot synthesis. After precipitation in aqueous sodium carbonate solution and subsequent purification, aqueous dispersions were prepared by ultrasonication. Particle sizes in the dispersions ranged from few tens of nanometers to several micrometers and most of the particles had sizes of 50-250 nm. Further studies indicated that the colloidal stability is a combined result of steric stabilization caused by excluded volume interactions of PEO chains on particle surface and electrostatic stabilization by the dissociated carboxylic acid groups on the particle surface. The product could be processed into uniform films 20-30 nm in thickness by spin coating onto gold-plated silicon substrates having aminethiol monolayer as the top most layer.
Poly(benzimidazobenzophenanthroline) (BBL) was prepared according to literature method and modified with poly(ethylene oxide) in a one pot synthesis. After precipitation in aqueous sodium carbonate solution and subsequent purification, aqueous dispersions were prepared by ultrasonication. Particle sizes in the dispersions ranged from few tens of nanometers to several micrometers and most of the particles had sizes of 50-250 nm. Further studies indicated that the colloidal stability is a combined result of steric stabilization caused by excluded volume interactions of PEO chains on particle surface and electrostatic stabilization by the dissociated carboxylic acid groups on the particle surface. The product could be processed into uniform films 20-30 nm in thickness by spin coating onto gold-plated silicon substrates having aminethiol monolayer as the top most layer.
Turun yliopiston Tutkimustietojärjestelmän portaali