Controlled electrochemical deposition of polysaccharide films and hydrogels, and materials formed therefrom

US7883615B2 · kind B2 · utility

Assignees

• UNIVERSITY OF MARYLAND, COLLEGE PARK · US
• UNIVERSITY OF MARYLAND, BALTIMORE · US

Inventors

• Gregory F. Payne · Cockeysville, US
• Li-Qun Wu · North Potomac, US
• Reza Ghodssi · Silver Spring, US
• William E. Bentley · Annapolis, US
• Gary W. Rubloff · Clarksville, US
• Hyunmin Yi · Ellicott City, US
• Rohan Fernandes · Bethesda, US
• Tianhong Chen · Newark, US
• David Small · Strafford, US

Key dates

• Filing date: Feb 11, 2004
• Grant date: Feb 8, 2011
• Expiry date: May 14, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D5/4419
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A method is provided for electrochemically depositing a polysaccharide mass having a selected physical state. According to an embodiment, an electrically conductive support of a substrate is contacted with an aqueous solution including a selectively insolubilizable polysaccharide, and the selectively insolubilizable polysaccharide is electrochemically deposited on the electrically conductive support while controlling deposition conditions to form the polysaccharide mass having the selected physical state, such as that of a hydrogel. Deposition may be performed in a spatially and/or temporally controlled manner.