Originally Posted by Photo Engineer
With few exception (Erythrosine and Chlorophyll being two I can name OTOMH), emulsion sensitizing dyes have positively charged Nitrogen atoms in them.
See attached. There is a resonance plus charge carried by one of the Nitrogens as the electrons resonate. Compare with Rhodamine.
Ok Ron, here is rhodamine 6G and B's structure. And I included the one you posted, which is....? Are those just "cyanines"?
This is a completely foreign language to me, but I'd like to learn it. What do you call these kinds of diagrams?
No better workshops than at George Eastman House...