ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,488, issued on Dec. 30, was assigned to Tiangong University (Tianjin, China).

"Fluorine-doped carbon dot (CD)-modified enrichment chromogenic membrane and use thereof in detection of three perfluorinated compounds (PFCs)" was invented by Jie Wang (Tianjin, China), Yang Yuan (Tianjin, China), Hui Jia (Tianjin, China), Xu Zhu (Tianjin, China) and Jialei Cao (Tianjin, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fluorine-doped CD is synthesized through one-pot solvothermal synthesis as follows: dissolving 4-(diethylamino)salicylaldehyde and sodium fluoride in deionized water to produce an aqueous solution, and ultrasonically mixing the aqueou...