Alkali metal ions regulate the supramolecular chirality of interfacial assembly of achiral phthalocyanine

作者：Jiang, Yuying; Wang, Tianyu^*; Bai, Ming^*; Jiang, Jianzhuang

来源：Dyes and Pigments, 2018, 157: 133-139.

DOI：10.1016/j.dyepig.2018.04.056

• Supramolecular chirality
• Phthalocyanine
• Interfacial assembly
• Host-guest
• Alkali metal ions

Because of their unique optical, electrical, and magnetic properties, fabrication of novel phthalocyanines supramolecular assemblies is becoming extremely important. However, developing phthalocyanines assemblies with tunable supramolecular chirality is still difficult due to the good planarity of phthalocyanine molecules, which could induce strong pi-pi interaction and tight aggregation. Herein, the supramolecular chirality of interfacial assembly of achiral phthalocyanine was thoroughly regulated by simply using different alkali metal ions. Achiral phthalocyanine with crown ether substituents (H2Pc(15C5)(4)) could form chiral assemblies with helical nanostructures upon interaction with potassium ions at the air-water interface. It is found that the formation of phthalocyanine dimers plays very important role. However, smaller lithium ions cannot induce this achiral phthalocyanine form chiral assemblies. Although sodium ions can form good host-guest complex with crown ether substituents, only weak optical activity can be detected from H2Pc(15C5)(4)/Na+ assemblies.

• 出版日期2018-10
• 单位山东大学