Ring-Shaped J-Type and Star-Shaped H-Type Nanostructures of an Unsymmetrical (Phthalocyaninato)zinc Complex

• Published in: European Journal of Inorganic Chemistry Vol. 2011; no. 9; pp. 1466 - 1472
• Main Authors: Tian, Naichang, Ma, Pan, Wang, Quanbo, Zhang, Xianyao, Jiang, Jianzhuang, Bai, Ming
• Format: Book Review Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.03.2011; WILEY‐VCH Verlag; Wiley
• Subjects: Aggregation; Chemistry; Chemistry, Inorganic & Nuclear; Nanostructures; Phthalocyanines; Physical Sciences; Science & Technology; Self-assembly; ELECTROCHEMISTRY; INTERMOLECULAR INTERACTION; SELF-ASSEMBLED NANOSTRUCTURES; SUBSTITUENTS; STRUCTURAL-CHARACTERIZATION; Nanostructures; PERYLENE BISIMIDE DYES; Aggregation; Self-assembly; FREE PHTHALOCYANINE; PERYLENE-3,4-9,10-BIS(DICARBOXIMIDE) PIGMENTS; METAL-LIGAND COORDINATION; Phthalocyanines; MORPHOLOGY
• ISSN: 1434-1948; 1099-0682
• DOI: 10.1002/ejic.201001106

Unsymmetrical (phthalocyaninato)zinc complex 1 was synthesized by transesterification and self‐assembled into ring‐shaped nanostructures with J‐type aggregation at the chloroform/water interface and into star‐shaped nanostructures with H‐type aggregation in the chloroform/methanol system, respectively. Its self‐assembly properties have been studied by spectroscopic, transmission electron microscopy (TEM), scanning electron microscopy (SEM), and X‐ray diffraction (XRD) techniques. The star‐shaped nanostructures were found to have better semiconducting properties than the ring‐shaped nanostructures due to the more effective intermolecular π‐electron delocalization. The results appear to represent the first example of nanostructures with J‐ and H‐type molecular conformations self‐assembled from the same phthalocyanine compound in different solvent systems with novel ring‐ and star‐shaped morphologies, respectively. An unsymmetrical (phthalocyaninato)zinc complex has been synthesized and, through a self‐assembly process, converted into J‐ and H‐type nanostructures with ring‐ and star‐shaped morphologies, respectively.Current–voltage (I–V) measurements revealed the star‐shaped nanostructures to have better semiconducting properties than the ring‐shaped nanostructures.