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:
Sep. 17, 2013
Filed:
May. 25, 2006
Neil R. Branda, North Vancouver, CA;
Bettina Wuestenberg, Ritterhude, DE;
Vincent Lemieux, Mont-tremblant, CA;
Michael Adams, Vancouver, CA;
Simon Gauthier, Ottawa, CA;
Neil R. Branda, North Vancouver, CA;
Bettina Wuestenberg, Ritterhude, DE;
Vincent Lemieux, Mont-tremblant, CA;
Michael Adams, Vancouver, CA;
Simon Gauthier, Ottawa, CA;
Switch Materials Inc., Vancouver, British Columbia, CA;
Abstract
Photochromic and electrochromic hexadiene compounds that are reversibly convertible between ring-open and ring-closed isomeric forms. The conversion between the different isomeric forms may be induced by light or electricity. The compounds may include a charge transfer moiety including electron donor and acceptor groups. The electron donor and acceptor are linearly conjugated in the ring-open form to enable electron transfer but are electrically insulated in the ring-closed form. Photoresponsive compounds may be synthesized by any of several methods disclosed, e.g., by reacting diene precursors with dienophiles in a condensation reaction. The compounds may be utilized in reactivity-gated photochromic or electrochromic applications. Compounds may be used in a method to selectively release a releasable agent, such as a small molecule.