To construct various unique porphyrin assemblies, urea groups bearing-porphyrin gelators 1-H 2, 1-Cu and 1-Zn were newly synthesized. It was revealed by SEM and UV-vis spectra that introduce of Cu(II) into the porphyrin nuclei changes the stacking mode in the gel phases. 2-H 2 and 2-Cu having triethoxysilyl groups at their periphery successfully give organic/inorganic hybrids composed of porphyrin superstructures after sol-gel reaction. On the other hand, 1-Zn is found to gelatinize benzene only in the presence of piperazine. SEM images of the gels showed that increasing the stoichometry of piperazine to 1-Zn varies the morphology of 1-Zn · piperazine complex aggregates: that is, spherical structure(0 eq.), 1-D fibillar structure(0.5 eq.), 2-D sheet structure(1.0 eq.). In addtion, we have studied the viscoelasticity of 1-Zn · piperazine complex gel.
|Number of pages||1|
|Publication status||Published - Dec 1 2005|
|Event||54th SPSJ Annual Meeting 2005 - Yokohama, Japan|
Duration: May 25 2005 → May 27 2005
|Other||54th SPSJ Annual Meeting 2005|
|Period||5/25/05 → 5/27/05|
All Science Journal Classification (ASJC) codes