Nanocluster growth "graft-onto": effects on geometric structures and optical properties.

Atomically precise engineering on the nanocluster surface remains highly desirable for the fundamental understanding of how surface structures of a nanocluster contribute to its overall properties. In this paper, the concept of "graft-onto" has been exploited to facilitate nanocluster growth on surface structures. Specifically, the Ag(DPPM)Cl complex is used for re-constructing the surface structure of (SR)(PPh) ( , SR = 1-adamantanethiolate) and producing a size-growth nanocluster - (SR)(DPPM)Cl ( ).

Polymorphism of Au(PR)Cl clusters: understanding C-H⋯π interaction and C-H⋯Cl-C van der Waals interaction on cluster assembly by surface modification.

The C-H⋯π interaction and the C-H⋯Cl-C van der Waals interaction play a crucial role in the crystallization of nanoclusters. In this paper, we present an example of a crystal system transformation of Au(PR)Cl from monoclinic (M) to trigonal (T) by surface modification. Atomically-resolved gold nanoclusters containing tris(4-chlorophenyl)phosphine and chloride ligands were synthesized and determined to be Au(-ClPPh)Cl (-ClPPh = tris(4-chlorophenyl)phosphine) by X-ray crystallography.

Assembly of the Thiolated [Au Ag (S-Adm) ] Superatom Complex into a Framework Material through Direct Linkage by SbF Anions.

Building framework materials with desirable properties and enhanced functionalities with nanocluster/superatom complexes as building blocks remains a challenge in the field of nanomaterials. In this study, the chiral [Au Ag (S-Adm) ] nanocluster/superatom complex (SC, in which S-Adm=1-adamantanethiol) was employed as a building block to construct the three-dimensional (3D) superatom complex inorganic framework (SCIF) materials SCIF-1 and SCIF-2 through inorganic SbF linkers. SCIF-1 is racemic due to the assembly of two SC enantiomers in a single crystal.

Metal synergistic effect on cluster optical properties: based on Ag series nanoclusters.

Due to their high biological stability and strong fluorescence, thiolated metal nanoclusters have shown great potential as a new generation of bio-nano-materials. However, the ambiguous mechanism of fluorescence impedes the design and synthesis of highly fluorescent nanoclusters. In this work, Ag nanocluster and its dopants were chosen as a model to study the effect of metal synergy on the optical properties.