Formation of Enantiomerically Pure Luminescent Triple-Stranded Dimetallic Europium Helicates and Their Corresponding Hierarchical Self-Assembly Formation in Protic Polar Solutions
Formation of Enantiomerically Pure Luminescent Triple-Stranded Dimetallic Europium Helicates and Their Corresponding Hierarchical Self-Assembly Formation in Protic Polar Solutions
复制标题
在质子极性溶液中对映体纯发光三链双金属铕螺旋体的形成及其相应的层次自组装形成
DOI：
10.1021/acs.inorgchem.0c00058
复制
发表时间：
2020-03-02
影响因子：
4.6
通讯作者：
Gunnlaugsson, Thorfinnur
中科院分区：
文献类型：
--
作者：
Barry, Dawn E.;Kitchen, Jonathan A.;Gunnlaugsson, Thorfinnur
在竞争性有机溶剂和质子溶剂中合成了双核Eu（III）手性螺旋配体1和2，并将其用于形成双核Eu（III）发光手性螺旋组装体（Eu-2中心点L-3）。光谱分析表明在甲醇溶液中形成2：3（Eu-2中心点L-3）和2：2（Eu-2中心点L-2）物种。圆二色性和圆偏振发光（CPL）光谱证实了螺旋系统的手性纯度，而扫描电子显微镜成像表明形成的分层自组装与球形形态。
Ditopic helicate ligands 1 and 2 were synthesized for the formation of dinuclear Eu(III )luminescent chiral helical assemblies (Eu-2 center dot L-3) in competitive organic and protic solvent media. Spectroscopic analysis revealed formation of the 2:3 (Eu-2 center dot L-3) and 2:2 (Eu-2 center dot L-2) species in methanolic solutions. Circular dichroism and circularly polarized luminescence (CPL) spectroscopy confirmed the chiral purity of the helical systems, while scanning electron microscopy imaging demonstrated the formation of hierarchical self-assemblies with spherical morphologies.