Symmetric, twinned, and double-decker phthalocyanines substituted by trialkylated pentaerythritol

摘要

Trialkylated pentaerythritol was chosen as a bulkysubstituent for a set of 3 free-base phthalocyanines: a symmetric, atwinned, and a double-decker derivative. The bulkiness of thissubstituent lowered the aggregation of the phthalocyanines. Theelectronic absorptions were comparatively investigated: the twinnedphthalocyanine exhibited a significant near-infrared shiftedabsorption. The neutral radical Eu(III) complex was oxidized bybromine. These 3 phthalocyanines are promising for use as molecularmaterials.