Add time:08/18/2019         Source:sciencedirect.com

The determination of fluorescence quantum yields (Φf) of deep red dyes emitting at 635–900 nm is difficult due to lack of suitable standards. In this work, we propose a commercial dye, RHODAMINE 800 (cas 101027-54-7) (Rho800), as reference standard which belongs to the family of xanthenes. The quantum yield of rhodamine 800 in absolute ethanol has been studied using a relative method with cresyl violet (CV) and rhodamine 101 (Rho101) as references, and an absolute fluorometric method by integrating sphere measurements.

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