作者:Tianmin Shu、Junchen Wu、Ying Zou、Keyin Liu、Liqing Chen、Tao Yi
DOI:10.1007/s11458-010-0109-5
日期:2010.6
A novel type of ligands contained 1,4,7,10-tetrazacyclododecane and functionalized by two azobenzene moieties grafted with two alkyl chains was designed and synthesized. The ligands with long alkyl chains can form metallogels in the presence of Zn2+ cations. The formation of metallogel was followed by NMR and electronic spectral detection. The morphology of the xerogels is varied with the equivalent of Zn2+ cations and the concentration of the gel. Spectral and structural analysis indicated that the driving forces of the gel formation were attributed to intermolecular hydrophobic interactions between alkyl chains and π-π interaction between azobenzenes.
研究人员设计并合成了一种新型配体,这种配体含有 1,4,7,10-四氮杂环十二烷,并由两个接枝了两条烷基链的偶氮苯官能化。具有长烷基链的配体可在 Zn2+ 阳离子存在下形成金属凝胶。通过核磁共振和电子光谱检测跟踪了金属凝胶的形成过程。异构凝胶的形态随 Zn2+ 阳离子的当量和凝胶的浓度而变化。光谱和结构分析表明,凝胶形成的驱动力归因于烷基链之间的分子间疏水相互作用和偶氮苯之间的π-π相互作用。