|About this Abstract
||Materials Science & Technology 2011
||Next Generation Biomaterials
||Probing Molecular Polarization at Interfaces of De Novo Proteins and Electrode Surfaces
||Kendra Kathan-Galipeau, Bohdana Discher,, Dawn Bonnell
|On-Site Speaker (Planned)
Novel approaches to energy harvesting and biosensing would exploit optoelectronic processes such as those found in proteins that occur in nature. The ability to engineer simpler proteins with optoelectronic function enables control over assembly, and properties. In order to design systems the proteins need to be attached to electrodes and the properties in non-liquid environments must be understood. This talk will describe the simultaneous detection of electron transport and of optical absorption on dielectric polarizability in oriented peptide single molecular layers. This requires a peptide design strategy to control protein/electrode interface interactions and induce optical activity. A new method to probe electronic, dielectric, and optical properties at the single molecular layer level is demonstrated. The combination enables a quantitative comparison of the change in polarization volume between the ground state and excited state in a single molecular layer in a manner that allows spatial mapping relevant to ultimate device design.