Optically Active Multilayer Films Based on Chitosan and an Azopolymer

• DOI: 10.1021/bm500014r
• Publication Date: 2014-02-24T21:37:40Z
• Authors: Raquel Fernández; Connie Ocando; Susana C. M. Fern...; Arantxa Eceiza; Agnieszka Tercjak
• Keywords: Layer by layer; Active layer

The layer-by-layer technique has been widely adopted for the fabrication of nanostructures with tailored properties. In this work, photoactive multilayer films consisting alternating layers chitosan and an azopolymer were developed by method. Taking into account that pH is factor controlling charge weak polyelectrolytes, influence parameter on structure properties was evaluated. Thus, different prepared varying conditions as well bilayer number. morphology analyzed diverse advanced techniques, such ultraviolet–visible spectroscopy, X-ray diffraction, atomic force microscopy equipped PeakForce QNM (Quantitative Nanomechanical Property Mapping). It found thickness, roughness elastic modulus increased decrease solution increase Furthermore, induced birefringence measurements revealed a higher level photo-orientation attained