The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 21, 2020
Filed:
Jan. 12, 2018
The University of Western Ontario, London, ON, CA;
Joe B. Gilroy, London, CA;
Giovanni Fanchini, London, CA;
Joseph A. Paquette, Blind River, CA;
Sabastine C. Ezugwu, London, CA;
THE UNIVERSITY OF WESTERN ONTARIO, London, ON, CA;
Abstract
Disclosed herein are redox-active 6-oxoverdazyl polymers having structures (S1) and (S2) synthesized via ring-opening metathesis polymerization (ROMP) and their solution, bulk, and thin-film properties investigated. Detailed studies of the ROMP method employed confirmed that stable radical polymers with controlled molecular weights and narrow molecular weight distributions (Ð<1.2) were produced. Thermal gravimetric analysis of a representative example of the title polymers demonstrated stability up to 190° C., while differential scanning calorimetry studies revealed a glass transition temperature of 152° C. An ultrathin memristor device was produced using these polymers, namely a 10 nm homogeneous thin film of poly-[1,5-diisopropyl-3-(cis-5-norbornene-exo-2,3-dicarboxiimide)-6-oxoverdazyl] (P6OV), a poly-radical with three tunable charge states per each radical monomer: positive, neutral and negative.