Chitosan-Mediated and Spatially Selective Electrodeposition of Nanoscale Particles
Citations Over TimeTop 10% of 2005 papers
Abstract
Nanoscale particles offer a variety of interesting properties, and there is growing interest in their assembly into higher ordered structures. We report that the pH-responsive aminopolysaccharide chitosan can mediate the electrodeposition of model nanoparticles. Chitosan is known to electrodeposit at the cathode surface in response to a high localized pH. To demonstrate that chitosan can mediate nanoparticle deposition, we suspended fluorescently labeled latex nanoparticles (100 nm diameter spheres) in a chitosan solution (1%) and performed electrodeposition (0.05 mA/cm2 for several minutes). Results demonstrate that chitosan is required for nanoparticle electrodeposition; chitosan confers spatial selectivity to electrodeposition; and nanoparticles distribute throughout the electrodeposited chitosan film. Additionally, we observed that the deposited films reversibly swell upon rehydration. This work indicates that chitosan provides a simple means to assemble nanoparticles at addressable locations and provides further evidence that stimuli-responsive biological materials may facilitate fabrication at the microscale.
Related Papers
- → Review: Developments in micro/nanoscale fabrication by focused ion beams(2011)197 cited
- → Design and Optical Trapping of a Biocompatible Propeller-like Nanoscale Hybrid(2012)25 cited
- → Self-Assembly of Colloidal Nanoscale Particles: Fabrication, Properties and Applications(2010)17 cited
- → Exploring fabrication methods to highly sensitive and selective InP nanowire biosensors(2020)3 cited
- → (2002)