Singlet-triplet gap in 1,2,3-butatriene and its consequences on the mechanism of its spontaneous polymerization

Article Abstract:

Research was conducted to examine the reactivity of 1,2,3-butatriene, C4H4. The objective of the study is to use the calculated energies, harmonic frequencies and spin distributions for the lowest-lying electronic states of butatriene to gain an insight into its reactivity. Results indicate that the magnitude of the singlet-triplet gap for the monomer and its relatively high positive heat of formation does not permit a mechanism involving the direct formation of an isolated triplet species.

Polymerization, Monomers

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Fabrication and alignment of wires in two dimensions

Article Abstract:

A study was conducted to characterize a novel approach in preparing aligned, high-aspect ratio nanometer scale wires. The approach was based on the preparation of a low-density Langmuir monolayer film of alkylthiol-passivated silver quantum dots. The particles were ligand exchanged with shorter octanethiol molecules. Results indicated that the approach allowed the easy manipulation of wire structures on the water surface.

Nanotechnology, Monomolecular films, Thin films, Multilayered, Multilayered thin films

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