Sequential Infiltration Synthesis of Cadmium Sulfide Discrete Atom Clusters.

ABSTRACT: Exposure of soft material templates to alternating volatile chemical precursors can produce inorganic deposition within the permeable template (e.g. a polymer thin film) in a process akin to atomic layer deposition (ALD). While such sequential infiltration synthesis (SIS) processes have now been demonstrated for many metal oxides, we report an SIS process for a transition metal sulfide - CdS. Gas phase dimethyl cadmium and hydrogen sulfide precursors infiltrated into poly(4-vinylpyridine) thin films result in the 3D-nucleation of clusters consistent with a cubane-type Cd₄S₄ core that are variably terminated with methyl, thiol and hydroxy capping ligands. First principles models and simulation of few-atom Cd-based clusters are consistent with electronic and vibrational

SUBMITTER: Jayaweera NP 

PROVIDER: S-EPMC11878342 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature