| abstract |
Kind Code: A1 The present invention has a property of forming a long-lived triplet state with high yield, acting as an efficient photosensitizer in forming singlet oxygen, and having high chemical stability and a polar solvent such as water. Obtaining compounds that enhance their usefulness in combination with appropriate solubility in water. SOLUTION: The following structure: Embedded image (Wherein the substituents R 1 , R 2 , R 3 , R 4 and R 5 are each independently H, alkyl, amino, hydroxy, alkoxy, carboxy, carboxamide, ester, amide, sulfonato, substituted alkyl, substituted ester, A substituted ether or substituted amide, M is a divalent or trivalent metal cation, and n is between -5 and +5). [Selection diagram] None |