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Article Dans Une Revue Journal of Photochemistry and Photobiology A: Chemistry Année : 2021

Mechanofluorochromism of pyrenyl acrylates with different substitutional position and steric hindrance

Résumé

Solid-state emission color change upon mechanical stimuli, known as mechanofluorochromism (MFC), is reported for pyrenyl acrylates. The C-1- and C-4-alkenylated pyrenes ((E)-Ethyl-3-(Pyren-1-yl)acrylate and (E)-Ethyl-3-(Pyren-4-yl)acrylate, respectively) exhibited distinct MFC behaviors (hypsochromic and bathochromic shifts). The introduction of bulky tert-butyl groups in 2,7-position ((E)-Ethyl-3-(2,7-Di-tert-butylpyren-4-yl)acrylate) also induced the shifted overlapping of pyrene moiety in pristine form and suppressed the thermal back reaction in ground form. These characteristic MFC behaviors of pyrene-derived acrylates are discussed on the basis of emission spectra and decay times in pristine and ground forms.
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hal-03058715 , version 1 (14-12-2020)

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Yuichi Hirai, Anna Wrona-Piotrowicz, Janusz Zakrzewski, Arnaud Brosseau, Rémi Métivier, et al.. Mechanofluorochromism of pyrenyl acrylates with different substitutional position and steric hindrance. Journal of Photochemistry and Photobiology A: Chemistry, 2021, 405, pp.112972. ⟨10.1016/j.jphotochem.2020.112972⟩. ⟨hal-03058715⟩
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