-A A +A
The orientation of block copolymer (BCP) features in thin films can be obtained by spin-coating a BCP solution on a substrate surface functionalized by a polymer brush layer of the appropriate random copolymer (RCP). Although this approach is well established, little work reporting the amount and distribution of residual solvent in the polymer film after the spin-coating process is available. Moreover, no information can be found on the effect of trapped solvent on the interface between the BCP film and RCP brush. In this work, systems consisting of poly(styrene)-b-poly(methyl methacrylate) thin films deposited on poly(styrene-r-methyl methacrylate) brush layers are investigated by combining neutron reflectivity (NR) experiments with simulation techniques. An increase in the amount of trapped solvent is observed by NR as the BCP film thickness increases accompanied by a significant decrease of the …
American Chemical Society
Publication date: 
22 Jan 2020

Katia Sparnacci, Riccardo Chiarcos, Valentina Gianotti, Michele Laus, Tommaso J Giammaria, Michele Perego, Gianmarco Munao, Giuseppe Milano, Antonio De Nicola, Martin Haese, Lucas P Kreuzer, Tobias Widmann, Peter Müller-Buschbaum

Biblio References: 
Volume: 12 Issue: 6 Pages: 7777-7787
ACS applied materials & interfaces