| 초록 |
Layer-by-layer assembly technique is that the preparation of layered polymeric ultrathin films using oppositely charged polyelectrolytes dissolved in solvents. Polyelectrolyte multilayer thin films containing of poly(allylamine hydrochloride)(PAH) and poly(acrylic acid)(PAA) were assembled at different pHs. Depending on their pH conditions, the resulting films show sharp difference in their surface properties, such as wetting, morphology(porous transition), and biomolecular interactions. Polymer-on-polymer stamping(POPS) process was used for micropatterning of the film using charged polyelectrolytes as the ink. Patterned micron scale functional structures were created atop of the polyelectrolyte multilayer films using POPS technique. In our recent study using 293 epithelial cells, several polymeric surfaces were determined as cell adhesion controllable surfaces including the micro-patterning of cell interaction polyelectrolytes these multilayer films. |
