Light-Activated Molecular Conductivity in the Photoreactions of Vitamin D3
- 21 May 2009
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry A
- Vol. 113 (24), 6740-6744
- https://doi.org/10.1021/jp811224h
Abstract
In this theoretical-experimental approach, we show using ab initio calculations behavior consistent with the activation of 7-dehydrocholesterol, provitamin D(3), as an initial reactant toward ultraviolet-activated reactions of vitamin D(3). We find using molecular orbital theory that a conformation between the provitamin and the vitamin shows higher conductance than those of the reactant and product. We also find experimental evidence of this electrical character by directly measuring current-voltage characteristics on irradiated and nonirradiated samples of the provitamin. The activation of the provitamin D(3) is characterized with an increase in current during the irradiation.Keywords
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