Quadrupolar Dyes Based on Highly Polarized Coumarins.

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作者:Górski Krzysztof, Deperasińska Irena, Baryshnikov Glib V, Ozaki Shuhei, Kamada Kenji, à gren Hans, Gryko Daniel T
The fluorescence and other photophysical parameters of highly polarized, quadrupolar bis-coumarins possessing an electron-rich pyrrolo[3,2-b]pyrrole bridging unit are highly dependent on the linking position between both chromophores. Delocalization of the LUMO on the entire π-system results in intense emission and strong two-photon absorption.

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