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:
Jun. 02, 2026
Filed:
Jul. 25, 2023
The Regents of the University of California, Oakland, CA (US);
Ever O. Velasquez, Berkeley, CA (US);
Mercedes K. Taylor, Berkeley, CA (US);
Colin A. Gould, Berkeley, CA (US);
Jeffrey R. Long, Lafayette, CA (US);
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US);
Abstract
Metal organic frameworks are provided that exhibit a reversible phase change from a collapsed state to an expanded state. Due to this material property, these adsorbents exhibit stepped isotherms that have relevance in chemical storage and separations. The metal organic framework is M(LDP), where M is a metal selected from the group of Zn, Fe or Co and L is a ligand selected from the group of 1,4-benzenedipyrazolate (HBDP), 2,5-pyridinedipyrazolate (HPyDP), 2,5-pyrimidinedipyrazolate (HPymDP), 2,5-pyrazinedipyrazolate (HPyzDP), and 3,6-pyridazinedipyrazolate (HPydDP). The step pressure position in the isotherm was changed by using nitrogen instead of carbon in the ring allowing for tunable aromatic interactions.