We report a scanning force microscopy study on the growth from solution of poly(ethylene-oxide) (PEO) architectures on solid surfaces. A systematic investigation performed varying the concentration of the solutions spin-coated on either mica or indium-tin-oxide revealed that different ordered assemblies, including fibers and layers, can be produced. While in ultrathin films the assembly at surfaces is governed by the interplay of intramolecular as well as intermolecular and interfacial interactions, in films with a nominal thickness of several nanometers the latter contribution appears to be minimal. Achieving a careful insight on the growth of PEO films on different substrates is important to better understand and control of PEO phases in light-emitting electrochemical cells which make use of blends of PEO and conjugated electroluminescent polymers. (C) 2004 Elsevier B.V All rights reserved.
Growth of ordered poly(ethylene-oxide) thin films from solutions: an SFM study
MARLETTA, Giovanni;
2004-01-01
Abstract
We report a scanning force microscopy study on the growth from solution of poly(ethylene-oxide) (PEO) architectures on solid surfaces. A systematic investigation performed varying the concentration of the solutions spin-coated on either mica or indium-tin-oxide revealed that different ordered assemblies, including fibers and layers, can be produced. While in ultrathin films the assembly at surfaces is governed by the interplay of intramolecular as well as intermolecular and interfacial interactions, in films with a nominal thickness of several nanometers the latter contribution appears to be minimal. Achieving a careful insight on the growth of PEO films on different substrates is important to better understand and control of PEO phases in light-emitting electrochemical cells which make use of blends of PEO and conjugated electroluminescent polymers. (C) 2004 Elsevier B.V All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
