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Table 1 Two-photon action cross sections of fluorescein (in 0.1 M NaOH, pH 11) and rhodamine B (in methanol). Excitation wavelength, 760 nm

From: Water-Soluble Fullerenol with Hydroxyl Group Dependence for Efficient Two-Photon Excited Photodynamic Inactivation of Infectious Microbes

 Fluorescein (in ddH2O, pH = 11)Rhodamine B (in methanol)
Excitation wavelength at 760 nm action cross section, ησ2 (GM, 10−50cm4s/photon)36.566.1