Hierarchical self-assembly of triangular metallodendrimers into the ordered nanostructures

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• 作者：Bo Jiang^a ; Li-Jun Chen^a ; Ying Zhang^b ; Hong-Wei Tan^b ; Lin Xu^a ; ^{lxu@chem.ecnu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Hai-Bo Yang^a ; ^{hbyang@chem.ecnu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Coordination-driven self-assembly ; Hierarchical self-assembly ; Metallodendrimers ; Ordered nanostructures ; Triangular metallacycles
• 刊名：Chinese Chemical Letters
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：27
• 期：4
• 页码：607-612
• 全文大小：1839 K

文摘

We designed and constructed a new family of 60° dendritic dipyridyl donors, from which two novel triangular metallodendrimers were successfully prepared via coordination-driven self-assembly. Inspired by the existence of multiple intermolecular interactions (e.g., π–π stacking and CH–π interactions) imposed by the DMIP-functionalized poly(benzyl ether) dendrons, their hierarchical self-assembly behaviors were studied in various mixed solvents by using scanning electron microscopy (SEM). Interestingly, it was found that the morphologies of the obtained metallodendrimers were highly depended on the dendron generation. For example, the first-generation metallodendrimer was able to hierarchically self-assemble into the spherical nanostructures in various mixed solvents. However, the nanofibers were observed for the second-generation metallodendrimer under the similar conditions. Furthermore, the driven force for the formation of such ordered nanostructures was investigated by using ¹H NMR and fluorescence spectroscopy.