ArticleMacromolecular rapid communications2026
Chain-End Grafting of RAFT Polyelectrolyte Macroligands to Stabilize Near-Infrared-Emitting Gold Nanoclusters.
Article in Macromolecular rapid communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
With their photoluminescence properties, gold nanoclusters (AuNCs, d<2 nm) show great promise in various fields, including sensing, imaging and photosensitization. However, important challenges remain both regarding their colloidal stability and surface functionalization. Here, we investigate the synthesis of AuNCs with end-grafted polymer chains bearing multiple functional lateral groups. Water-soluble polymer chains are synthesized by RAFT controlled radical polymerization to present positive or negative lateral charges, and a thiol end-group to promote grafting to gold. These polyelectrolyte chains are obtained by copolymerization of N-acryloylmorpholine with a comonomer, either cationic (acryloylamino propyltrimethylammonium chloride, AAPTA) or anionic (2-acrylamido-2-methyl-1-propanesulfonate, AMPS), at different charge densities. The AuNCs are synthesized in situ in the presence of the macromolecular ligands, directly in water at room temperature. The cationic copolymers successfully lead to highly stable, NIR-emitting AuNCs fully characterized in terms of size (HR-TEM,
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