Voltage-Dependent Assembly of the Polysaccharide Chitosan onto an Electrode Surface

Citations Over TimeTop 10% of 2002 papers

Abstract

We examined the assembly of the amine-rich polysaccharide chitosan from solution onto electrode surfaces as a result of voltage bias on the electrode. Chitosan is positively charged and water soluble under mildly acidic conditions and is uncharged and insoluble under basic conditions. We observed that chitosan is deposited from acidic solution onto the surface of a negative electrode and the thickness of the deposited layer is on the order of a micron. The thickness of the deposited layer was observed to be dependent upon the deposition time, the applied voltage, and the chitosan concentration. No deposition was observed on the positive electrode or on an “electrode” that had no applied voltage. Once deposited and neutralized, the chitosan layer can be retained on the electrode surface without the need for an applied voltage. Infrared (FT-IR) and electrospray mass spectrometry confirmed that the deposited material was chitosan. These results demonstrate that chitosan can be deposited and retained on electrode surfaces, and the potential advantages for applications in microfabricated devices are discussed.

Related Papers

• → Chitosan and Low Molecular Weight Chitosan: Biological and Biomedical Applications(2014)21 cited
• Chitosan 첨가가 Poly(3 - hydroxybutyric acid) 필름의 물리적 특성 및 결정구조에 미치는 영향(2002)
• Chitosan을 이용한 감식초의 청징화(2001)
• 연구논문 / 게껍질에서 추출한 chitosan 필름의 이용에 관한 연구 1. 도포재로써의 chitosan 물성에 영향을 미치는 인자(1999)
• 무의 염장과정 중 조직감의 변화에 대한 예열처리 및 Chitosan 첨가효과(1994)