Capping Structure of Ligand-Cysteine on CdSe Magic-Sized Clusters.

ABSTRACT: Ligand molecules capping on clusters largely affect the formation and stabilization mechanism and the property of clusters. In semiconductor CdSe clusters, cysteine is used as one of the ligands and allows the formation of ultrastable (CdSe)₃₄ magic-sized clusters. Cysteine has sulfhydryl, amine, and carboxylate groups, all of which have coordination ability to the CdSe surface, and the bonding states of the three functional groups of ligand-cysteine on the CdSe core have not been determined. In this work, the capping structure of ligand-cysteine is examined by performing Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and multinuclear solid-state nuclear magnetic resonance (NMR) spectroscopy. FT-IR, XPS, and ¹H, ¹³C

SUBMITTER: Kurihara T 

PROVIDER: S-EPMC6648626 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature