381079 Imprinting of Metal Receptors into Layer-By-Layer Polyelectrolyte Films for Antifouling Applications

Tuesday, November 18, 2014: 10:15 AM
International 10 (Marriott Marquis Atlanta)
Sreenivasa Reddy Puniredd1, Dominik Janczewski1, Dewi Pitrasari Go1, Xiaoying Zhu1, Shifeng Guo1, Teo Lay Ming Serena2, Lee Siew Chen Serina2, Lim Chin Sing2 and G. Julius Vancso3,4, (1)Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore, Singapore, (2)Tropical Marine Science Institute, National University of Singapore,18 Kent Ridge Road, Singapore, (3)Institute of Chemical and Engineering Sciences, A*STAR, 1, Pesek Road, Jurong Island, Singapore, (4)MESA+ Institute for Nanotechnology, Materials Science and Technology of Polymers, University of Twente, P.O. Box 217, Enschede, Netherlands

Imprinting of Cu2+ selective layer-by-layer (LbL) films have been investigated and their antifouling performance has been evaluated. Adsorption of polycation having histidne grafted poly (allylamine) (PAH) and methyl ester containing polyanions yields polymer films with histidine ligands that bind metal ions. Ester groups within the polyanion are favorable for covalent cross linking with the histidine grafted polycation. Two methods of LbL film formation have been demonstrated alternate deposition poly anion with high density methyl esters and poly cation with histidine ligand (non-imprinted LbLA), PAH-Histidine is coordinated with Cu2+ ions in solution and then assembled into multilayer films with poly anion containing high density of methyl esters (imprinted LbLB). In the end, both the LbL films are cross linked at mild temperature to yield the covalent bridging of the layers. Comparative study of the non- imprinted LbLA films and imprinted LbLB films for the Cu2+ ions binding capacity, leaching rate and stability of the films have been investigated and demonstrated that the imprinted films are better than the non-imprinted films; thereby the processing method of LbL assembly template is vital for imprinting of metals.

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See more of this Session: Nanostructured Polymer Films
See more of this Group/Topical: Materials Engineering and Sciences Division