TL;DR: Especially in the field of enantioselective synthesis, vicinal diamines (1,2-diamines) 1 and compounds easily prepared from them are widely used by organic chemists and various strategies have been developed to produce these compounds selectively.
Abstract: Especially in the field of enantioselective synthesis, vicinal diamines (1,2-diamines) 1 and compounds easily prepared from them-such as 1,2-bisimines, 1,2-diamides, or imidazolidin-2-ones-are widely used by organic chemists. Various strategies have been developed to produce these compounds selectively. Many natural products and medicinal agents also contain a 1,2-diamino unit.
TL;DR: In this article, a simple extension of the reflection high energy electron diffraction oscillation technique to vicinal surfaces provides a means of studying surface diffusion during molecular beam epitaxial growth, and some preliminary results for Ga diffusion during the growth of GaAs films with (001) 2×4 and 3×1 reconstructed surfaces are presented.
Abstract: A simple extension of the reflection high‐energy electron diffraction oscillation technique to vicinal surfaces provides a means of studying surface diffusion during molecular beam epitaxial growth. The basis of the method is described and some preliminary results for Ga diffusion during the growth of GaAs films with (001) 2×4 and 3×1 reconstructed surfaces are presented.
TL;DR: In this paper, hyperfine control of the interface structure and composition between GaAs and AlAs films grown by molecular beam epitaxy has been achieved by deposition on vicinal (100) GaAs substrates.
Abstract: Hyperfine control of the interface structure and composition between GaAs and AlAs films grown by molecular beam epitaxy has been achieved by deposition on vicinal (100) GaAs substrates. This control is demonstrated by producing (GaAs)m‐(AlAs)n submonolayer (m and/or n<1) superlattices over a wide temperature range. Analysis of these submonolayer superlattices by transmission electron microscopy shows that the layer growth regime is dominant and that layer nucleation is initiated preferentially at the step edges on the (100) vicinal surface. Potential applications of submonolayer superlattices including the growth of superlattice layers perpendicular to the substrate surface are described.