Photo-driven chemical transformations are ubiquitous across multiple scientific disciplines, from catalysis, to polymer dynamics, to control of gene expression. In comparison, light-driven formation of nanoparticles remains limited in scope, though the use of light as a reagent has several advantages, including the ability to control reaction outcomes via irradiation wavelength, intensity, and timing, among other parameters. Here, we use molecular photocatalytic reduction to synthesize bimetallic nanoparticles and demonstrate that this approach not only produces a range of particle compositions, it also reveals a new nanoparticle formation pathway involving continuous nucleation. These results demonstrate the versatility of light-driven nanoparticle formation.

Photocatalytic synthesis of bimetallic nanoparticles via continuous nucleation

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