Nanometer Sized Direct Laser-Induced Gold Printing for Precise 2D-Electronic Device Fabrication.

Flexible electronics manufacturing technologies are essential and highly favored for future integrated photonic and electronic devices. Direct laser induced writing (DIW) of metals has shown potential as a fast and highly variable method in adaptable electronics. However, most of the DIW procedures use silver structures, which tend to oxidize and are limited to the micrometer regime.

Synthesis and characterisation of four bimetallic gold-gallium clusters with Au-Ga rings as a new structural motif in gold cluster chemistry.

Using the newly introduced reducing agent in gold cluster chemistry GaCp, four new bimetallic gold-gallium cluster compounds were synthesised, stabilised by alkylphosphine ligands. The gold core of Au(GaCl)(PEt), Au(GaCl)(P Pr) and Au(GaCl)(GaCl)(P Pr Bu) is composed of two, three and four Au tetrahedra, linked in different ways. This arrangement gives the last-mentioned cluster the shape of a five-pointed star.

Multilayer Langmuir Film of Monodisperse Au Nanoclusters: Unusual Growth via Bilayers.

The assembly of nanomaterials into thin films is an important area in the nanofabrication of novel devices. The monodispersity of nanoparticles plays an essential role in the resulting quality of the assembled mono- and multilayers. Larger polydispersity leads to smaller lateral correlation lengths and smaller domains of aligned nanoparticles, thus resulting in more point and line defects.

Au ( Bu P) : A Highly Symmetric Metalloid Gold Cluster in Oxidation State 0.

Metalloid gold clusters have unique properties with respect to size and structure and are key intermediates in studying transitions between molecular compounds and the bulk phase of the respective metal. In the following, the synthesis of the all-phosphine protected metalloid cluster Au ( Bu P) , solely built from gold atoms in the oxidation state of 0 is reported. Single-crystal X-ray analysis revealed a highly symmetric hollow cube-octahedral arrangement of the gold atoms, resembling gold bulk structure.

A new reductant in gold cluster chemistry gives a superatomic gold gallium cluster.

The low valent gallium(i) compound GaCp was primarily used in gold cluster chemistry to synthesize the superatomic cluster [(PPh)AuGaCl], complementing the borane-dominated set of reducing agents in gold chemistry, opening a whole new field for further research. Using density functional theory calculations, the cluster can be described by the jellium model as an 8-electron superatom cluster.

Structural order enhances charge carrier transport in self-assembled Au-nanoclusters.

The collective properties of self-assembled nanoparticles with long-range order bear immense potential for customized electronic materials by design. However, to mitigate the shortcoming of the finite-size distribution of nanoparticles and thus, the inherent energetic disorder within assemblies, atomically precise nanoclusters are the most promising building blocks. We report an easy and broadly applicable method for the controlled self-assembly of atomically precise Au(BuP)Cl nanoclusters into micro-crystals.

Synthesis and Characterization of Three Multi-Shell Metalloid Gold Clusters Au (R P) Cl.

Three multi-shell metalloid gold clusters of the composition Au (R P) Cl (R=Et, Pr, Bu) were synthesized in a straightforward fashion by reducing R PAuCl with NaBH in ethanol. The Au core comprises two shells, with the inner one constituting a tilted icosahedron and the outer one showing a distorted dodecahedral arrangement. The outer shell is completed by eight chloride atoms and twelve R P groups.