| 主权项 |
1. A pyridinium-based compound represented by Formula 1: (wherein, in Formula 1, R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 are each independently hydrogen, a hydroxyl group, an amino group (—NH2), a nitro group (—NO2), a cyano group (—CN), a C1 to C10 alkyl group, a C6 to C20 aryl group, a C1 to C10 alkoxy group, a C3 to C10 cycloalkyl group, R—C(═O)—* (where R is a C1 to C10 alkyl group, and * is a binding site between elements), or R′—SO2—* (where * is a binding site between elements, and R′ is a C1 to C10 alkyl group or C6 to C20 aryl group); R11 and R12 are each independently hydrogen, a C1 to C10 alkyl group, a C6 to C20 aryl group, or a hydroxyl group; and X is *—NRaRb (where Ra and Rb are each independently hydrogen, a C1 to C10 alkyl group, a C6 to C20 aryl group, a C1 to C10 alkoxy group, a C6 to C20 aryloxy group, or a C7 to C20 arylalkyl group, and * is a binding site between elements) or *—ORc (where Rc is hydrogen, a C1 to C10 alkyl group, a C6 to C20 aryl group, a C1 to C10 alkoxy group, a C6 to C20 aryloxy group, or a C7 to C20 arylalkyl group, and * is a binding site between elements). |
