# Determining Fluorescence Quantum Yield of C60 in Toluene

For my experiment, I am trying to determine the fluorescence quantum yield of C60-fullerene in toluene (at room temperature). In order to do that, I need to have a standard sample with a valid and known fluorescence quantum yield. I have been looking for a standard sample with a known quantum yield in toluene, however, I am not sure of what to use.

Would it be better if I used a different solvent in determining the quantum yield and if so what solvent and standard should I use.

• A fairly popular standard is Rhodamine 6G, in some sort of alcohol. Be aware that if you decide to use a different solvent, you'll have to account for differences in refractive index. – chipbuster Mar 13 '14 at 2:04

The authors apparently used 9-cyanoanthracene in toluene as a standard to determine $\Phi_f$ of C60.