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Journal Articles Chemical Communications Year : 2023

Realization of nitroaromatic chromophores with intense two-photon brightness

Abstract

Strong fluorescence is a general feature of dipyrrolonaphthyridinediones bearing two nitrophenyl substituents. Methyl groups simultaneously being weakly electron-donating and inducing steric hindrance appear to be a key structural parameter that allows for significant emission enhancement, whereas Et2N groups cause fluorescence quenching. The magnitude of two-photon absorption increases if 4-nitrophenyl substituents are present while the contribution of Et2N groups is detrimental.
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Dates and versions

hal-04311533 , version 1 (28-11-2023)

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Bartłomiej Sadowski, Marzena Kaliszewska, Guillaume Clermont, Yevgen Poronik, Mireille Blanchard-Desce, et al.. Realization of nitroaromatic chromophores with intense two-photon brightness. Chemical Communications, 2023, 59 (78), pp.11708-11711. ⟨10.1039/D3CC03347C⟩. ⟨hal-04311533⟩
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