Abstract
This paper presents the use of polyelectrolyte-decorated amyloid fibrils
as gate electrolyte in electrochromic electrochemical transistors. Conducting
polymer alkoxysulfonate poly(3,4-ethylenedioxythiophene) (PEDOT-S) and luminescent
conjugate polymer poly(thiophene acetic acid) (PTAA) are utilized to decorate
insulin amyloid fibrils for gating lateral poly(3,4-ethylenedioxythiophene):poly(styrene
sulfonate) (PEDOT:PSS) electrochemical transistors. In this comparative work,
four gate electrolytes are explored, including the polyelectrolytes and their
amyloid-fibril complexes. The discrimination of transistor behaviors with
different gate electrolytes is understood in terms of an electrochemical mechanism.
The combination of luminescent polymers, biomolecules and electrochromic transistors
enables multi functions in a single device, for example, the color modulation
in monochrome electrochromic display, as well as biological sensing/labeling.
© 2013 IEEE
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