Journal Article organic field-effect transistors Research Support, Non-U.S. Gov't ambipolar transport anadromous fish climate change composites conductive hydrogel composites density-functional theory device stability donor-acceptor conjugated copolymers electron injection endangered species environmental variability exciton binding energy fluorinated phenylenes high temperature electronics hydrologic variability liquid metals long-range asymptotic potential error materials science multifunctional optical transition energies in materials organic semiconductors plane-wave basis set quasiparticle bandgap reconfigurable conductors reversible conductive networks salmon soft conductive materials