| 摘要 |
Disclosed is a dye having the chemical formula: or a mixture thereof. Each R1 is independently selected from hydrogen, halogen, cyano, alkyl, alkenyl, alkynyl, alkoxyl, alkylthio, alkylamino, dialkylamino, alkylaminocarbonyl, dialkylaminocarbonyl, aryl, heteroaryl, phosphoric acid, or sulfonic acid. Each R2 is independently selected from Each n is independently selected from an integer of 2 to 10. |
