Tuning the solid-state emission of small push-pull dipolar dyes to the far-red through variation of the electron-acceptor group - Aix-Marseille Université Access content directly
Journal Articles Dyes and Pigments Year : 2018

Tuning the solid-state emission of small push-pull dipolar dyes to the far-red through variation of the electron-acceptor group

Sébastien Redon
Martin Ipuy
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  • PersonId : 776185
  • IdRef : 18225884X
Erwann Jeanneau
Isabelle Gautier-Luneau
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  • PersonId : 948844
Alain Ibanez
Chantal Andraud
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  • PersonId : 829281
Yann Bretonnière

Abstract

Series of solid-state emitters based on the D-π-A dipolar structure and featuring various electron-donor and electron-acceptor groups were designed, and their spectroscopic properties studied. From weak emission in dilute solutions, intense emissions in aggregated state (AIE) and in the crystalline state were obtained. Analysis in light of crystal structures obtained by X-ray diffraction revealed specific crystal packing and presence of long chain of emitting aggregates. This simple molecular engineering around the D-π-A dipolar structure provides easy access to a wide range of effective solid-state emitters allowing modulation of emission wavelengths up to the near infrared (λem reaching 735 and 768 nm for compound 2f and 3f bearing the strongest electron-withdrawing group).
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Dates and versions

hal-01856313 , version 1 (10-08-2018)

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Sébastien Redon, Gwenaelle Eucat, Martin Ipuy, Erwann Jeanneau, Isabelle Gautier-Luneau, et al.. Tuning the solid-state emission of small push-pull dipolar dyes to the far-red through variation of the electron-acceptor group. Dyes and Pigments, 2018, 156, pp.116-132. ⟨10.1016/j.dyepig.2018.03.049⟩. ⟨hal-01856313⟩
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