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Dr. Yevgen M. Poronik, Vincent Hugues, Dr. Mireille Blanchard-Desce and Prof. Dr. Daniel T. Gryko Octupolar Merocyanine Dyes: A New Class of Nonlinear Optical Chromophores Chemistry - A European Journal 18

Article first published online: 21 JUN 2012 | DOI: 10.1002/chem.201200718

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Octupolar merocyanine chromophores displayed very high molar absorption coefficients and high two-photon absorption cross-sections in the spectral range of interest for biological imaging. Changing the end heterocyclic moieties allowed the tuning of optical properties to approach the cyanine limit (i.e., polymethine state); this resulted in a red-shift of the linear absorption band, as well as in the rise of a two-photon band in the NIR region.

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