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A series of transition metal coordination complexes designed to assemble on gold surfaces was synthesized, their electronic structure and transitions analyzed, and their magnetic properties studied. The assembled molecules exhibit properties similar to that of the bulk molecules, indicating little change in molecular structure outside of chemisorption.

The various procedures for the enrichment of single-walled carbon nanotube (SWNT) types by simple filtration of the functionalized SWNTs through silica gel are discussed. The relative peak intensity changes in Raman spectra, which can be caused by morphological changes in SWNT bundling based on differing flocculation or deposition methods, is demonstrated.

A route to direct covalent bonds between pi-conjugated organic molecules on material surfaces like-Si, GaAs and Pd is described using aryldiazonium salts that are air-stable and easily synthesized. A data-encompassing explanation for the mechanism is provided.

A study is conducted to demonstrate a simple technique for depositing thiolate-based self-assembled monolayer onto gold without the need for ancillary reagents during deprotection and assembly. This technique is ideal for aromatic systems and dithiol-derived molecules and is suitable for use with alkanethiols, provided that the lower packing density is acceptable.

Photoluminescent nanocrystalline silicon was examined and exciton-mediated hydrosilylation observed.

Research is presented demonstrating Lewis acid mediated hydrosilylation on porous silicon surfaces which stabilize and protect these surfaces from chemical or atmospheric attack, without affecting the porosity, visible room-temperature luminescence and surface area.

A series of mononuclear nickel(II) bis(diphosphine) complexes [Ni(P(Ph)(2)N(C6H4X)(2))(2)](BF(4))(2) (P(Ph)(2)N(C6H4X)(2) = 1,5-di(para-X-phenyl)-3,7-diphenyl-1,5-diaza-3,7-diphosphacyclooctane; X = OMe, Me, CH(2)P(O)(OEt)(2), Br, and CF(3)) have been synthesized and characterized. X-ray diffraction studies reveal that [Ni(P(Ph)(2)N(C6H4Me)(2))(2)](BF(4))(2) and [Ni(P(Ph)(2)N(C6H4OMe)(2))(2)](BF(4))(2) are tetracoordinate with distorted square planar geometries. The Ni(II/I) and Ni(I/0) redox couples of each complex are electrochemically reversible in acetonitrile with potentials that are increasingly cathodic as the electron-donating character of X is increased. Each of these complexes is an efficient electrocatalyst for hydrogen production at the potential of the Ni(II/I) couple. The catalytic rates generally increase as the electron-donating character of X is decreased, and this electronic effect results in the favorable but unusual situation of obtaining higher catalytic rates as overpotentials are decreased. Catalytic studies using acids with a range of pK(a) values reveal that turnover frequencies do not correlate with substrate acid pK(a) values but are highly dependent on the acid structure, with this effect being related to substrate size. Addition of water is shown to dramatically increase catalytic rates for all catalysts. With [Ni(P(Ph)(2)N(C6H4CH2P(O)(OEt)2)(2))(2)](BF(4))(2) using [(DMF)H](+)OTf(-) as the acid and with added water, a turnover frequency of 1850 s(-1) was obtained.