Lanthanide luminescent gold nanoparticles: pH-driven self-assembly formation between Eu(III)-cyclen conjugated AuNPs and sensitising β-diketonate antenna in water - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Organic & Biomolecular Chemistry Année : 2009

Lanthanide luminescent gold nanoparticles: pH-driven self-assembly formation between Eu(III)-cyclen conjugated AuNPs and sensitising β-diketonate antenna in water

Célia Bonnet
Julien Massue
Susan Quinn
  • Fonction : Auteur
Thorfinnur Gunnlaugsson
  • Fonction : Auteur

Résumé

The formation of a self-assembly between water soluble gold nanoparticlesAuNP-1.Eu, functionalised with a heptadentate macrocyclic Eu(III) cyclen conjugate via an alkyl thiol spacer, and a naphthalene β-diketone antenna was investigated as a function of pH in water. In the study, the changes in the absorption spectra of the antenna and the goldsurface plasmon resonance band, the fluorescence and the delayed Eu(III) emission of the self-assembly were all monitored. We demonstrate that the Eu(III) emission arising from the self-assembly formation on AuNP is significantly modulated as a function of pH, where within the physiological pH range, the emission is ‘switched on’ and that a direct connection can be made between theses changes and the quenching in the antenna as a function of pH.

Dates et versions

hal-02117719 , version 1 (02-05-2019)

Identifiants

Citer

Célia Bonnet, Julien Massue, Susan Quinn, Thorfinnur Gunnlaugsson. Lanthanide luminescent gold nanoparticles: pH-driven self-assembly formation between Eu(III)-cyclen conjugated AuNPs and sensitising β-diketonate antenna in water. Organic & Biomolecular Chemistry, 2009, 7 (15), pp.3074. ⟨10.1039/b904183d⟩. ⟨hal-02117719⟩
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