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Efficient two- to five-photon excited violet emission of calix[4]arene-based multiple donor-acceptor assembly
Hai Hua Fan1, King Fai Li, Xiao Ling Zhang
1Centre for Advanced Luminescence Materials and Department of Physics, Hong Kong Baptist University, Hong Kong SAR, China.
Abstract:
Remarkably strong multiphoton, from two- to five-photon, upconverted violet fluorescence is first observed on a calix[4]arene-based multi-dipolar assembly which is strongly enhanced as compared to that of the corresponding dipolar counterparts.
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