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Turkish Journal of Chemistry, Vol.36, No.4, 493-502, 2012
Symmetric, twinned, and double-decker phthalocyanines substituted by trialkylated pentaerythritol
Trialkylated pentaerythritol was chosen as a bulky substituent for a set of 3 free-base phthalocyanines: a symmetric, a twinned, and a double-decker derivative. The bulkiness of this substituent lowered the aggregation of the phthalocyanines. The electronic absorptions were comparatively investigated: the twinned phthalocyanine exhibited a significant near-infrared shifted absorption. The neutral radical Eu(III) complex was oxidized by bromine. These 3 phthalocyanines are promising for use as molecular materials.
Keywords:Phthalocyanine;twinned;alkylated pentaerythritol;europium;double-decker;electronic near-infrared delocalization