Rational Materials Design for In Operando Electropolymerization of Evolvable Organic Electrochemical Transistors

Organic electrochemical transistors formed by in operando electropolymerization of the semiconducting channel are increasingly becoming recognized as a simple and effective implementation synapses neuromorphic hardware. However, very few studies have reported requirements that must be met to ensure polymer spreads along substrate form functional conducting channel. The nature interface between various monomer precursors polymers through molecular dynamics simulations is investigated, showing adsorption produces an increase concentration at surface. By evaluating combinatorial couples monomers baring sidechains with differently functionalized substrates, it shown interactions precursor control lateral growth film inert substrate. This effect has implications for fabricating synaptic systems on inexpensive, flexible substrates.