Photoregulation of molecular orientation of stearic acid in a polyion complex LB film containing azobenzene derivative

Article Abstract:

The polyion complexes of stearic acid have been found to undergo photoregulated trans-cis photoisomerization when exposed to a temperature range between 45-65 degree Celsius. Such a phenomenon does not only provide concrete evidence for the role played by system temperature in photoregulating stearic acid orientation, but also shed light on the apparent use of long chain fatty acids in designing optical memory storage media. Exposure to ultraviolet radiation has also been shown to transform stearic acid to their initial stages.

Analysis, Thin films, Optical properties, Isomerization, Stearic acid

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A C82 carbon cage stable toward two different oxidation states of endohedral metal atoms

Article Abstract:

The existence of a special kind of C(sub 82) carbon cage is proven experimentally. This was done through an examination of the effect of transmutation of an encaged metal atom on the stability of M(at)C(sub 82). The carbon cage, which forms chemically stable metallofullerenes with metal atoms, is the same one that commonly forms M(at)C(sub 82)(C) with M in the +3 state. It is also the one that forms the minor isomers of M(at)C(sub 82)(C) and of Tm(at)C(sub 82)(C) for M in the +2 oxidation state.

Radioactivity, Organometallic chemistry, Carbon allotropes, Radioactive decay, Isomerism, Isomers (Chemistry)

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