2 results match your criteria: "Univ. Lyon 69622[Affiliation]"

One- and two-photon brightness of proteins interacting with gold. A closer look at gold-insulin conjugates.

Nanoscale

August 2024

Institut lumière matière, UMR5306, Université Claude Bernard Lyon1-CNRS, Univ. Lyon 69622, Villeurbanne cedex, France.

Red luminophores displaying large Stokes shift and high-quantum yields are obtained when gold salts are reacted with proteins under strongly alkaline conditions. Although bovine serum albumin (BSA) has mainly been used as a protein template, other attempts to prepare red luminophores have been proposed using other proteins. Here, we report on the structural characterization and nonlinear optical properties of insulin-gold conjugates.

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Incorporating anisotropic surface charges on atomically precise gold nanoclusters (Au NCs) led to a strong absorption in the near-infrared region and could enable the formation of self-assembled Au NCs exhibiting an intense absorption band at ∼1000 nm. This surface modification showed a striking enhancement of the photoluminescence in the Shortwave Infrared (SWIR) region with a quantum yield as high as 6.1% in water.

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