| 摘要 |
A cationic bis-urea compound is disclosed of formula (1): wherein: each m is independently an integer of 0 to 4, each k is independently 0 or 1, each Z' is a monovalent radical independently selected from the group consisting of hydroxyl (*-OH), carboxyl (*-COOH), cyano (*-CN), nitro (*-NO2), sulfonate (*-SO3-), trifluoromethyl (*-CF3), halides, amine groups, ketone groups, alkyl groups comprising 1 to 6 carbons, alkoxy groups comprising 1 to 6 carbons, thioether groups comprising 1 to 6 carbons, and combinations thereof, each L' is independently a divalent alkylene group comprising 1 to 6 carbons, wherein a *-[-L'-]k- is a single bond when k is 0, each Y' is independently a monovalent non-polymeric radical comprising a positive charged amine, and each X' is independently a negative charged counterion. |
