Preparation of non‐aggregating novel silicon phthalocyanines axially disubstituted with fluorinated functions

Abstract

This work reports on the synthesis, spectroscopic characterisation and aggregation behaviour of a range of new silicon phthalocyanines with 2‐[3‐(trifluoromethyl)phenoxy], 2‐{2‐[3‐(trifluoromethyl)phenoxy]ethoxy}, 2‐(2,3,5,6‐tetrafluorophenoxy) and 2‐[2‐(2,3,5,6‐tetrafluorophenoxy)ethoxy] groups as axial ligands. The new silicon phthalocyanine complexes were characterised, and their aggregation behaviour was investigated. Silicon phthalocyanine complexes were highly soluble in common organic solvents. The effect of solvents on absorption spectra were studied in various organic solvents.

Non-aggregated axially disubstituted silicon phthalocyanines bearing electropolymerizable ligands and their aggregation, electropolymerizaton and thermal properties

“…[16][17][18] However, the poor solubility and aggregation of phthalocyanines limits their applications. [21][22][23][24][25][26] The axial substitution of phthalocyanines can strongly influence the essential parameters of a phthalocyanine, such as its solubility, aggregation behavior, electronic absorption, photophysical, photochemical and electrochemical properties. 19 Also, aggregation is an unfavourable property of phthalocyanines.…”

“…In recent years, in order to improve the solubility of phthalocyanines, many axially disubstituted silicon phthalocyanine complexes have been synthesized. [21][22][23][24][25][26] The axial substitution of phthalocyanines can strongly influence the essential parameters of a phthalocyanine, such as its solubility, aggregation behavior, electronic absorption, photophysical, photochemical and electrochemical properties. 27 Axially disubstituted silicon phthalocyanines display very attractive electrochemical properties.…”