Aggregation of chlorophylls in monolayers.

The interaction of dioxane vapor with monolayer and multilayers of chlorophyll has been studied using electronic and infarared spectroscopies. Our results indicate the formation of a complex implying the oxygene of the dioxanc molecules with the magnesiums of adjacent chlorophyll molecules. These results are consistent with the molecular orbital calculations, using the "free electron network" method done by Le Brech, Leblanc and Antippa [Chem. Phys. Letters 26(1974) 37-44].