The cationic dye may be chosen from azo dyes, azomethine dyes, methine dyes and xanthene dyes.
优选地，阳离子染料选自偶氮染料、偶氮甲碱染料、次甲基染料和？吨染料。
As the chromophore relaxes, the twist of the C15 methine bridge about its two dihedral angles is reversed.
当发光基团松弛，C15次甲基桥的两个二面角的扭曲是相反的。
The meso carbon atom of the methine linkage of the dye is attached to the nitrogen atom of an amino group.
该染料的甲川链上的中位碳原子与氨基的氮原子相连。
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