Authors: MUZAFFER KÖÇ, AYŞE GÜL GÜREK, FABIENNE DUMOULIN, VEFA AHSEN
Abstract: 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
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