Attack or defend! A smart polymer surface has two reversiblyswitchable equilibrium states, a cationic N,N‐dimethyl‐2‐morpholinone (CB‐Ring) and a zwitterionic carboxy betaine (CB‐OH). CB‐Ring will kill bacteria upon contact under dry conditions, whereas CB‐OH will release the previously attached and dead bacteria and further resist adhesion of bacteria under wet conditions.
SWITCHABLE POLYMERS AND SURFACES WITH REVERSIBLY SWITCHABLE PROPERTIES
申请人:Jiang Shaoyi
公开号:US20120269870A1
公开(公告)日:2012-10-25
Reversibly switchable polymers, surfaces that include the polymers, and methods for making and using the polymers and surfaces. The switchable polymers are non-fouling in their zwitterionic form and are antimicrobial in their cationic form.
Sticky and non‐sticky, together? A newly developed zwitterionic material (CB‐OH; blue structure in scheme) has an equilibrium counterpart (CB‐Ring; red). This interchangeable material allows control over two distinct properties: “non‐sticky” CB‐OH (biomolecular resistance) and “sticky” CB‐Ring (binding by covalent bonds).