Allen, William E.Causey, Corey2016-02-052016-02-052006-07-18U.S. Patent No. 7,078,528http://hdl.handle.net/10342/5164Biimidazole diamide compounds that are useful for binding anions such as sulfate are described, along with the use thereof for purposes such as extracting anions from a waste stream and/or detecting anions.Patent