Electronically conductive polymer fibers with mesoscopic diameters show enhanced electronic conductivities

Abstract

Polyheterocyclics have been the subject of intense recent research interest.1 Registry No. PP, 30604-81-0; PMT, 84928-92-7.(5) Conductivity values for homogeneous PP films were obtained by using this method and the more conventional four-point method; identical values were obtained. The four-point method cannot be used on these ultranarrow fibers.(6) The surface layers are less than 200 nm thick and cover 100% of the surface area; the fibers are 10 ^m long and occupy 1% (or less) of the surface area.Furthermore, for several membranes, we measured the resistance, scraped off the surface layers, and then remeasured the resistance; Rm values with and without the surface layers were identical.

Synthesis of polymeric microcapsule arrays and their use for enzyme immobilization

“…14 Immobilized enzymes are used in bioreactors and biosensors (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). Current methods for immobilizing enzymes include adsorption or covalent attachment to a support (2)(3)(4), microencapsulation (5,6), and entrapment within a membrane/film (7,8,(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) or gel (9 The synthetic methods developed are related to our work on polymeric microtubules (21)(22)(23)(24). While such tubules (21)(22)(23)(24)(25)(26)(27...…”

“…Current methods for immobilizing enzymes include adsorption or covalent attachment to a support (2)(3)(4), microencapsulation (5,6), and entrapment within a membrane/film (7,8,(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) or gel (9 The synthetic methods developed are related to our work on polymeric microtubules (21)(22)(23)(24). While such tubules (21)(22)(23)(24)(25)(26)(27) are interesting microstructures, they are of doubtful utility for enzyme immobilization because they are microscopic cylinders that are open on both ends.…”

Understanding the Mechanisms that Affect the Quality of Electrochemically Grown Semiconducting Nanowires

“…Martin [53][54][55] subsequently created pores in polycarbonate membranes by track-etch method. In this work, polycarbonate membranes were purchased from Whatman and had pore lengths of 20 μm and diameter of the order of 200 nm.…”

Enhanced Sensitivity of PEDOT Microtubule Electrode to Hydrogen Peroxide by Treatment with Gold

“…Since Martin et al proposed the scheme of preparing conducting polymer microtubule by template synthesis method, 1 it was widely applied to such areas as microfiltration, sensor array, delivery system, and so on. [2][3][4][5][6] Among these applications, the sensor application was noticeable because of the advantages from its excellent collective properties and signal transducing capabilities.…”