Construction of unique photo-functional molecules based on thproperties of heteroatoms and azulene

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Construction of photo-functional molecules based on the properties of heteroatoms and azulene was tried by introduction of a heteroatom (phosphorus or boron) into the position adjacent to a coordinative functional group in the 5-membered ring of azulene. Thus, we revealed how the intramolecular coordination of a pyridyl group with a phosphorus atom affected the -electron system of azulene. Furthermore, we found that the iminoazulenes prepared by the condensation of an amino acid with 2-boryl-1-formylazulene showed a variety of coloration in solid states depending on the structure of the amino acid.