Clusters of noble metals, particularly gold, with precise nuclearity (number of atoms) and overall molecular composition continue to be a topic of intense experimental and theoretical research endeavors. These efforts aim at understanding the basic factors, such as electronic structure, atomic packing, and adsorbed layers that underlie the appearance of certain structural motifs and control the...

Two hybrid assemblies (3 and 4) with two kind of nanoscaled cluster units, the spherical [Co(24)(TC4A)(6)(MO(4))(8)Cl(6)](2+) cation (1 and 2) and Keggin-type [PM(12)O(40)](3-) anion (M = Mo (1/3), W (2/4)), were solvothermally prepared and characterized, in which the spherical units are constructed by six Co(4)-p-tert-butylthiacalix[4]arene (Co(4)-TC4A) SBUs linked by eight MO(4) tetrahedrons ...

A cage-like {[Ca(H(2)O)](6)(H(2)O)}(12+) cluster with a water molecule enwrapped, sandwiched by two novel [As(4)W(6)O(34)](12-) fragments, has been obtained, and the extension of these clusters from molecules into a 2-D layer occurs through [Ca(H(2)O)(5)](2+) linkers, which represents the first heteropolyoxoanion (HPA) constituted by [As(4)W(6)O(34)](12-) and the unprecedented high nuclearity {...

Current status of nanoscience research is briefly surveyed with special emphasis on monodisperse metal nanocrystals. Tunneling spectroscopy measurements on polymer protected magic nuclearity Pd561 nanocrystals have revealed single electron charging effects. Mesoscopic organizations resulting from self-assembly of these nanocrystals have been investigated. Giant clusters containing magic numbers...

Quantitative assessment of myocardial development and disease requires accurate measurement of cardiomyocyte volume, nuclearity (nuclei per cell), and ploidy (genome copies per cell). Current methods require enzymatically isolating cells, which excludes the use of archived tissue, or serial sectioning. We describe a method of analysis that permits the direct simultaneous measurement of cardiomy...

In nanocatalysis, clusters deposited on solid, well-defined surfaces play an important role. For the detection of size effects it is, however, important to prepare samples consisting of deposited clusters of a single size, as their chemical properties change with the exact number of atoms in the cluster. In this paper, the experimental tools are presented to prepare such model systems. The exis...

The behavior of single Pt atoms and small clusters was investigated for high-temperature oxidations. high stability these molecular sites in CHA is a key to intrinsic structure-performance descriptions elemental steps such as O2 dissociation, subsequent oxidation catalysis. Subtle changes the atomic structure are responsible drastic performance driven by specific gas/metal/support interactions....