Details

Autor(en) / Beteiligte

• Lu, Jitao
• Zhou, Liang
• Meng, Qingguo
• Sui, Haiyan
• Li, Yi
• Tai, Xishi

Titel

Self-assembly of sandwich-type (phthalocyaninato)(porphyrinato) europium double-decker complexes: Effects of hydrogen bonding on intermolecular stacking mode and morphology of self-assembled nanostructures

Ist Teil von

• Dyes and pigments, 2015-02, Vol.113, p.138-144

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Two novel sandwich-type (phthalocyaninato)(porphyrinato) europium double-decker complexes, namely Eu(Pc)[(NHC8H17)PP] (1) and Eu(Pc)[(NHC8H17)4PP] (2), have been designed and synthesized. Their self-assembly properties, in particular the effect of the numbers of octylaminophenyl groups on the morphology of self-assembled nanostructures of these double-decker complexes, have been comparatively and systematically studied. Depending mainly on the hydrogen bond between one octylaminophenyl group at meso-attached phenyl group of porphyrin ligand in 1 and one aza-nitrogen atom of the phthalocyanine ring in the neighboring molecule of 1, 1 self-assembled into nano-rods with J-type aggregation. In good contrast, introduction of four octylaminophenyl groups onto the meso-attached phenyl groups of the porphyrin ligand in 2, induces more N–H⋯N hydrogen bonds between neighboring molecules of 2, induces the formation of nano-sheets with H-type aggregation. These results clearly imply the effective influence of hydrogen bond numbers on the molecular stacking mode and the morphology of the assembled nanostructures. Comparative investigation over self-assembled nano-structures of two novel sandwich-type (phthalocyaninato)(porphyrinato) europium double-decker complexes with one and four octylaminophenyl group attached at the p-position of the meso-attached phenyl group of the porphyrin ligand reveals the effect of inter-molecular hydrogen bonds on the molecular packing conformations and in turn different nanostructure morphologies in the self-assembly process. [Display omitted] •Two (phthalocyaninato)(porphyrinato) europium double-decker complexes were prepared.•Effect of the number of hydrogen bonds on the assembled nanostructures was studied.•Both nano-rods and nano-sheets were revealed to show good semiconductor features.