Surface engineering using layer-by-layer assembly of pH-sensitive polymers and nanoparticles

PMSE 176

Robert E. Cohen, recohen@mit.edu, Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
An electrostatic layer-by-layer deposition scheme has been used successfully to produce conformal ultrathin films on a variety of three dimensional objects, including colloidal particles, membrane pores and nanofluidic channels as well as on conventional flat substrates. Various charged macromolecules and/or nanoparticles have been employed; in some cases suitable post-treatment of the films provides enhanced functionality. There is potential for applications of these films in areas such as structural color, antireflection, self-decontamination, antifogging, non-wetting and water-gathering.