Question

Difference between rhodamine b and rhodamine 6g

Answer 1

Fluorescence quantum yields of seven rhodamine dyes were measured relative to quinine sulfate dihydrate (QSH) in 1.0 NH 2 SO 4. The values obtained were rhodamine 6G (0.95), B (0.65), 3B (0.45), 19 (0.95), 101 (0.96), 110 (0.92), 123 (0.90) at 25.0° C. Effects of temperature on the quantum yields of rhodamine B and QSH show a large temperature coefficient for rhodamine B and a significant one for QSH. Dye concentration was found to be critical in reporting obp