	US 11,857,944 B2
	Metal organic resins with zirconium nodes
Mercouri G. Kanatzidis, Wilmette, IL (US); Debajit Sarma, Chicago, IL (US); and Emmanouil Manos, Ioannina (GR)
Assigned to Northwestern University, Evanston, IL (US)
Filed by Northwestern University, Evanston, IL (US)
Filed on May 10, 2021, as Appl. No. 17/315,833.
Application 17/315,833 is a continuation of application No. 15/772,385, granted, now 11,020,724, previously published as PCT/US2016/061241, filed on Nov. 10, 2016.
Claims priority of provisional application 62/253,425, filed on Nov. 10, 2015.
Prior Publication US 2021/0299634 A1, Sep. 30, 2021
Int. Cl. B01J 20/22 (2006.01); B01D 53/02 (2006.01); B01J 41/08 (2017.01); B01J 20/32 (2006.01); B01J 41/12 (2017.01); B01J 41/05 (2017.01); C08L 5/04 (2006.01); B01J 47/018 (2017.01); B01J 47/02 (2017.01)

CPC B01J 20/226 (2013.01) [B01D 53/02 (2013.01); B01J 20/3206 (2013.01); B01J 20/3208 (2013.01); B01J 20/3274 (2013.01); B01J 41/05 (2017.01); B01J 41/08 (2013.01); B01J 41/12 (2013.01); C08L 5/04 (2013.01); B01D 2253/204 (2013.01); B01D 2253/206 (2013.01); B01J 47/018 (2017.01); B01J 47/02 (2013.01)]

11 Claims

1. A method of detecting metal ions in a sample, the method comprising:

contacting the sample comprising the metal ions with a metal organic resin comprising metal organic frameworks and associated counter anions, wherein the metal organic frameworks comprise metal nodes coordinated via organic molecular linkers to form a connected porous network and the organic molecular linkers are protonated and amine-functionalized, and further wherein the metal organic resin is able to absorb ultraviolet radiation and produce fluorescence emission;

illuminating the sample with ultraviolet radiation, whereby the metal organic resin absorbs the ultraviolet radiation; and

measuring the fluorescence emission intensity, the fluorescence emission profile, or both.