Porphyrin array exhibiting large two photon absorption property and including, as structural unit, bis (imidazolylporphyrin metal complex) linked with acetylenic bond and the derivative thereof, and method of producing the same

Abstract

A porphyrin array exhibiting a large two-photon absorption property, and being linked with an acetylenic bond(s), represented by the following formulas:wherein Rrepresents an alkyl or aryl group, Mrepresents a metal ion capable of serving as a core metal and forming a coordinate bond with Im, Mrepresents two protons or a metal ion incapable of forming a coordinate bond with Im, Rand Rrepresent a group selected from a porphyrin residue or porphyrin metal complex residue, a cyclic diimide residue, a dialkylviologen residue, a benzoquinone residue, an N-methylpyrrolidine-fullerene derivative residue and a ferrocene residue, Im is represented by Imor Im:(Rrepresents methyl or H), Lrepresents —(—C≡C—)— (m=1 to 3); n represents an integer of 1 or more; Rrepresents one of R, R, Rand Im.