Molecular and supermolecular origins of enhanced electric conductivity in template-synthesized polyheterocyclic fibrils. 1. Supermolecular effects

Template Synthesis of Electronically Conductive Polymers

“…Finally, we have previously shown that these enhancements in electronic conductivity results from enhancements in molecular and supermolecular order in the template-synthesized conductive polymers (6). In particular, we have These striations arise because the membrane .…”

A Review on Electronic Transport Properties of Individual Conducting Polymer Nanotubes and Nanowires

“…The dependence of electrical conductivity on the diameter of the polymer nanotubes/wires (prepared by the template method) at room temperature has been widely reported (Cai et al, 1991;Martin et al, 1995;Granström & Inganäs, 1995;Duchet et al, 1998). It was found that the room-temperature conductivities of nanotubes/wires of conducting polypyrrole, polyaniline et al can increase from 10 -1 -10 0 to about 10 3 S/cm with the decrease of their outer diameters from 1500 to 35 nm.…”

“…By now, conducting polymer nanotubes and nanowires can be prepared by various methods such as the template-guided synthesis (Martin, 1994), template-free method (Wan, 1999), interfacial polymerization (Huang et al, 2003), electrospinning (MacDiarmid, 2001), dilute polymerization (Chio & Epstein, 2005), reverse emulsion polymerization method , etc. The template method of polymerization proposed by Martin et al is an effective technique to synthesize polymer micro-/nanotubes and wires with controllable length and diameter (Cai & Martin, 1989;Cai et al, 1991;Martin, 1994Martin, & 1995. The disadvantage of this method is that a post-synthesis process is needed in order to remove the template.…”

“…There are several strategies for measuring the conductivity of the template-synthesized fibres. The easiest and usual way is to leave the fibres in the pores of the template membrane and measure the resistance across the membrane (Cai & Martin, 1989;Cai et al, 1991;Martin, 1995;Granström and Inganäs, 1995;Duchet et al, 1998;Mativetsky and Datars, 2002;Duvail et al, 2002Duvail et al, & 2004. Provided the number and diameter of the fibres are known, the measured trans-membrane resistance can be used to calculate the conductivity of a single fiber.…”

Overview of nanoelectronic devices

“…Bein and coworkers [202] used substrates with nanometer-scale pores [203] as templates to create carbonbased conducting polymer wires 3 nm in diameter. A similar method developed by Martin and coworkers [204] also polymerizes wires inside small channels. These nanowires show high conductivity compared to bulk polymers, suggesting that the wires are not amorphous but have regular structure.…”