1 research outputs found
Polyelectrolyte Layer-by-Layer Assembly on Organic Electrochemical Transistors
Oppositely
charged polyelectrolyte multilayers (PEMs) were built up in a layer-by-layer
(LbL) assembly on top of the conducting polymer channel of an organic
electrochemical transistor (OECT), aiming to combine the advantages
of well-established PEMs with a high performance electronic transducer.
The multilayered film is a model system to investigate the impact
of biofunctionalization on the operation of OECTs comprising a poly(3,4-ethylenedioxythiophene)
polystyrenesulfonate (PEDOT:PSS) film as the electrically active
layer. Understanding the mechanism of ion injection into the channel
that is in direct contact with charged polymer films provides useful
insights for novel biosensing applications such as nucleic acid sensing.
Moreover, LbL is demonstrated to be a versatile electrode modification
tool enabling tailored surface features in terms of thickness, softness,
roughness, and charge. LbL assemblies built up on top of conducting
polymers will aid the design of new bioelectronic platforms for drug
delivery, tissue engineering, and medical diagnostics