Wu Sainan, Wei Xiao, Li Hao, Shen Honglei, Han Jiaojiao, Kang Xi, Zhu Manzhou
Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, China.
Nanomaterials (Basel). 2021 Oct 9;11(10):2655. doi: 10.3390/nano11102655.
Surface modification has served as an efficient approach to dictate nanocluster structures and properties. In this work, based on an Ag nanocluster template, the effects of surface modification on intracluster constructions and intercluster packing modes, as well as the properties of nanoclusters or cluster-based crystallographic assemblies have been investigated. On the molecular level, the Ag nanocluster with larger surface steric hindrance was inclined to absorb more small-steric chlorine but less bulky thiol ligands on its surface. On the supramolecular level, the regulation of intramolecular and intermolecular interactions in nanocluster crystallographic assemblies rendered them CIEE (crystallization-induced emission enhancement)-active or -inactive nanomaterials. This study has some innovation in the molecular and intramolecular tailoring of metal nanoclusters, which is significant for the preparation of new cluster-based nanomaterials with customized structures and enhanced performances.
表面修饰已成为一种控制纳米团簇结构和性质的有效方法。在这项工作中，基于银纳米团簇模板，研究了表面修饰对团簇内结构和团簇间堆积模式的影响，以及纳米团簇或基于团簇的晶体组装体的性质。在分子水平上，具有较大表面空间位阻的银纳米团簇倾向于在其表面吸收更多空间位阻小的氯配体，但吸收体积较大的硫醇配体较少。在超分子水平上，纳米团簇晶体组装体中分子内和分子间相互作用的调控使其成为具有结晶诱导发射增强（CIEE）活性或无活性的纳米材料。这项研究在金属纳米团簇的分子和分子内剪裁方面具有一定创新性，对于制备具有定制结构和增强性能的新型基于团簇的纳米材料具有重要意义。
