title: Switches from pi- to sigma-bonding complexes controlled by gate voltages.
abstract: A conjugated polymer/metal ion/liquid-crystal molecular system was set between source and drain electrodes with a 100 nm gap. When gate voltage (Vg) increases, the current between source and drain electrodes increases. Infrared spectra show this system to be composed of pi and sigma complexes. At Vg = 0, the pi complex dominates the sigma complex, whereas the sigma complex becomes dominant when Vg is switched on. Calculations found that the pi complex has lower conductivity than the sigma complex.
authors.affiliation: Materials Laboratories, Sony Corporation, Atsugi, Kanagawa, Japan.
authors.forename: Eriko
authors.initials: E
authors.lastname: Matsui
authors.forename: Oliver
authors.initials: O
authors.lastname: Harnack
authors.forename: Nobuyuki N
authors.initials: NN
authors.lastname: Matsuzawa
authors.forename: Akio
authors.initials: A
authors.lastname: Yasuda
mesh_terms: D001665:Binding Sites; D004563:Electrochemistry / Q000295:instrumentation / Q000379:methods; D004566:Electrodes; D004574:Electromagnetic Fields; D004867:Equipment Design; D019544:Equipment Failure Analysis; D049329:Nanostructures / Q000032:analysis / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D011108:Polymers / Q000032:analysis / Q000737:chemistry*; D011758:Pyrroles / Q000032:analysis / Q000737:chemistry*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014173:Transistors, Electronic
chemical_list: D011108:Polymers; D011758:Pyrroles; C422409:liquid crystal polymer; C067635:polypyrrole