Weak-link capacitor
View Patent ↗A process for making a dielectric material where a precursor polymer selected from poly(phenylene vinylene) polyacetylene, poly(p-phenylene), poly(thienylene vinylene), poly(1,4-naphthylene vinylene), and poly(p-pyridine vinylene) is energized said by exposure by radiation or increase in temperature to a level sufficient to eliminate said leaving groups contained within the precursor polymer, thereby transforming the dielectric material into a conductive polymer. The leaving group in the precursor polymer can be a chloride, a bromide, an iodide, a fluoride, an ester, an xanthate, a nitrile, an amine, a nitro group, a carbonate, a dithiocarbamate, a sulfonium group, an oxonium group, an iodonium group, a pyridinium group, an ammonium group, a borate group, a borane group, a sulphinyl group, or a sulfonyl group.
1. A method of making a weak-link capacitor, comprising:
preparing a precursor polymer selected from the group consisting of a poly(phenylene vinylene), polyacetylene, poly(p-phenylene), poly(thienylene vinylene), poly(1,4-naphthylene vinylene), and polyp-pyridine vinylene), said precursor polymer comprising a leaving group;
casting said precursor polymer onto multiple individual substrates as thin films;
forming a capacitor by stacking said thin films using an offset technique; and
metalizing at least one end of said stack of thin films and attaching a contact to make a weak-link capacitor.
2. The method of claim 1 wherein said leaving group is selected from the group consisting of a chloride, a bromide, an iodide, a fluoride, an ester, an xanthate, a nitrile, an amine, a nitro group, a carbonate, a dithiocarbamate, a sulfonium group, an oxonium group, an iodonium group, a pyridinium group, an ammonium group, a borate group, a borane group, a sulphinyl group, and a sulfonyl group.
3. The method of claim 1 further comprising the step of metalizing said thin films using a metal selected from aluminum, gold, silver, copper and nickel.
4. The method of claim 1 wherein said weak-link capacitor is energized by a method selected from heating or ultraviolet radiation exposure to an energy level sufficient to eliminate said leaving groups.
5. The method of claim 1 wherein said poly(phenylene vinylene) precursor polymer comprising a leaving group is selected from C 20 H 16 Br 2 and C 20 H 16 I 2 .
6. A method comprising:
tethering a precursor polymer selected from the group consisting of poly(phenylene vinylene), polyacetylene, poly(p-phenylene), poly(thienylene vinylene), poly(1,4-naphthylene vinylene), and poly(p-pyridine vinylene), said precursor polymer comprising a leaving group to a polymer comprising an orthogonal photo-polymerizable group.
7. The method of claim 6 wherein said orthogonal photo-polymerizable group is polyacrylate.
8. The method of claim 6 wherein said precursor polymer comprising a leaving group tethered to a polymer comprising an orthogonal photo-polymerizable group is photo-chemically converted using a direct-write process to form a conductive material.