Song Xingjian, Liu Qiming, Yu Bingzhe, Dubois Davida, Chen Shaowei
Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, California 95064, United States.
Langmuir. 2024 Oct 22;40(42):22394-22400. doi: 10.1021/acs.langmuir.4c03199. Epub 2024 Oct 9.
Metal chalcogenide nanoparticles have been attracting extensive attention in diverse fields. Traditionally these nanoparticles are stabilized by organic ligands such as thiols and amines involving nonconjugated core-ligand interfacial interactions. In the present study, a facile wet-chemistry method is described for the synthesis of palladium disulfide (PdS) nanoparticles capped with acetylene derivatives. Spectroscopic and electrochemical measurements suggest that conjugated Pd-C≡ linkages are formed at the core-ligand interface and facilitate electronic coupling and hence manipulation of the nanoparticle optical and electronic properties. The unique interfacial linkages also allow further functionalization of the nanoparticles by metathesis reaction with olefin derivatives, as manifested in the reaction with vinylferrocene. This research opens new avenues for the structural engineering and functionalization of metal chalcogenide nanoparticles.
金属硫族化物纳米粒子在多个领域一直备受广泛关注。传统上，这些纳米粒子通过硫醇和胺等有机配体来稳定，涉及非共轭的核-配体界面相互作用。在本研究中，描述了一种简便的湿化学方法来合成用乙炔衍生物包覆的二硫化钯（PdS）纳米粒子。光谱和电化学测量表明，在核-配体界面形成了共轭的Pd-C≡键，促进了电子耦合，从而实现了对纳米粒子光学和电子性质的调控。这种独特的界面键合还允许通过与烯烃衍生物的复分解反应对纳米粒子进行进一步功能化，如与乙烯基二茂铁的反应所示。该研究为金属硫族化物纳米粒子的结构工程和功能化开辟了新途径。
