title: Structure Formation of Ultrathin PEO Films at Solid Interfaces&#8212;Complex Pattern Formation by Dewetting and Crystallization.
abstract: The direct contact of ultrathin polymer films with a solid substrate may result in thin film rupture caused by dewetting. With crystallisable polymers such as polyethyleneoxide (PEO), molecular self-assembly into partial ordered lamella structures is studied as an additional source of pattern formation. Morphological features in ultrathin PEO films (thickness < 10 nm) result from an interplay between dewetting patterns and diffusion limited growth pattern of ordered lamella growing within the dewetting areas. Besides structure formation of hydrophilic PEO molecules, n-alkylterminated (hydrophobic) PEO oligomers are investigated with respect to self-organization in ultrathin films. Morphological features characteristic for pure PEO are not changed by the presence of the n-alkylgroups.
authors: Max Bergmann Center of Biomaterials, Leibniz Institute of Polymer Research Dresden, Hohe Strasse 6, D-01069 Dresden, Germany. Braun@ipfdd.de.
authors: Hans-Georg
authors: HG
authors: Braun
authors: Evelyn
authors: E
authors: Meyer
references: J Phys Chem B. 2007 Nov 15;111(45):12959-63
references: 17958351
references: Phys Rev Lett. 2001 Jun 11;86(24):5534-7
references: 11415294
references: ACS Macro Lett. 2012 Jan 17;1(1):217-221
references: 35578483
references: Langmuir. 2012 Apr 3;28(13):5724-8
references: 22390193
references: Nat Methods. 2012 Jul;9(7):671-5
references: 22930834
references: Chem Soc Rev. 2012 Jun 21;41(12):4430-43
references: 22491348
references: ACS Appl Mater Interfaces. 2009 Aug;1(8):1682-7
references: 20355783
references: Phys Rev Lett. 1992 Jan 6;68(1):75-78
references: 10045116