Table 8.
Chemical structures and λmax of diphenylmethane and triphenylmethane dyes.
| Dyes | p-dimethylamino-phenylethynyl | Light green |
|---|---|---|
| Chemical structures |  |
 |
| λmax (nm) | 727 | 660 |
| Type of dyes | diphenylmethane | triphenylmethane |
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