The intensity of two-photon-excited fluorescence measured relative to the intensity of hyper-Rayleigh scattering in the same apparatus was used to determine the two-photon-excited fluorescence cross sections of the xanthene dyes Rhodamine B, Rhodamine 6G, and Fluorescein. The measured cross sections at l0 5 1064 nm are s2PF (2) 5 1.5 6 0.3 3 10250 cm4 s, 2.0 6 0.4 3 10250 cm4 s, and 1.4 6 0.3 3...

ess as: P r visibl niversity 2013.11.0 Abstract In this study, laponite and montmorillonite clays were found to be able to decompose rhodamine B upon visible light irradiation (k > 420 nm). Very interestingly, it was found that rhodamine B on laponite underwent a stepwise N-deethylation and its decomposition was terminated once rhodamine 110, as a decomposition product, was formed, whereas the ...