Synthesis of phthalocyanines functionalized by 4-fluorophenoxy moieties and their linear optical properties

Four kinds of phthalocyanines with 4-fluorophenoxy group (H₂Pc, CuPc, Li₂Pc, and FePc) are synthesized by the microwave-assisted method under 15min. The synthesized phthalocyanines have good solubility in aprotic polar solvents and do not form any new aggregation state with a concentration increase. The phthalocyanine coordinated with Li⁺ ion has a more stable and stronger absorption property in aprotic polar solvents than the phthalocyanine with Cu²⁺ or Fe²⁺ ion. The phthalocyanine coordinated with Fe²⁺ ion is more subject to H-aggregation than other phthalocyanines, especially in polar solvents.