Two-Photon Absorption Cross-Sections of Fluorene Derivatives with Cationic Substituents
CHEMISTRY LETTERS(2004)
摘要
Two novel fluorene derivatives having cationic substituents were synthesized. Two-photon absorption (TPA) properties of the derivatives were evaluated using the fluorescence-based technique with a femtosecond pulse emitted from a Ti:sapphire laser. Maximum TPA cross-sections of the compounds were estimated from the TPA spectra. TPA cross-sections of compounds with cationic substituents were found to be significantly larger than those of the compounds without cationic substituents.
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关键词
cross section,two photon absorption
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