Photoactive Semiconducting Biopolymers

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The basic aims of this project are to elucidate, manipulate, and utilise the unique chemical and physical properties of a class of biopolymers called the melanins. These materials are the only known solid state semiconducting biopolymers, and are non-toxic, biocompatible, and biodegradable. Their use as active components in biomimetic soft electonic, optoelectronic or photovoltaic devices, has not hitherto been demonstrated. It is anticipated that the key outcomes from the project will be a demonstration of biopolymer-based photoelectrochemical and solid-state p-i-n solar cells, and an improved understanding of the physics and chemistry of these important biological macromolecules.