| abstract |
The present invention provides a porphyrin derivative having improved water solubility, desirably having both water solubility and lipophilicity. Specifically, the present invention provides a water-soluble porphyrin consisting of a tetraphenylporphyrin derivative represented by Formula (1): n nwherein m represents an integer of 1 to 30; n represents an integer of 2 to 4; R represents a hydrogen atom or an optionally substituted alkyl or aromatic group; Ph represents an optionally substituted phenyl group; and X − is a counterion and represents a halide ion, PF 6 − , or BF 4 − . |