Enhancing two-photon uncaging sensitivity in symmetrical dimeric conjugated coumarin cages: Role of the coupling core

Dubois, Victor; Klausen, Maxime; Castet, Frédéric; Verlhac, Jean‐Baptiste; Desce, Mireille Blanchard

doi:10.1016/j.jphotochem.2023.114544

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2024

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“…In addition, it has been reported that the two-photon uncaging action crosssections of coumarin-type caging groups can be significantly enhanced when coumarin caging groups are combined with other chromophores to form donor-π-acceptor systems. 21) Since this concept can be applied to the 8-azacoumarins, this study would not only expand the repertoire of two-photon excitable coumarin caging groups but also lead to the development of caging groups with even higher two-photon uncaging action cross-sections.…”

Section: Discussionmentioning

confidence: 99%

Effect of Two-Photon Excitation to 8-Azacoumarin Derivatives as Photolabile Protecting Groups

Kobayakawa,

Takano,

Ishii

et al. 2024

CHEMICAL & PHARMACEUTICAL BULLETIN

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An improvement of the two-photon excitation was achieved using 8-azacoumarin-type caged compounds, which showed large values of the two-photon uncaging action cross-section (δ u >0.1 Goeppert-Mayer (GM)). In particular, the 7-hydroxy-6-iodo-8-azacoumarin (8-aza-Ihc)-caged compound showed an excellent uncaging action cross-section value (δ u 1.28 GM). Therefore, 8-azacoumarin-type photolabile protecting groups (PPGs) can be used as two-photon excitation sources.

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Section: Discussionmentioning

confidence: 99%