Kolay Sarita, Maity Subarna, Bain Dipankar, Chakraborty Sikta, Patra Amitava
School of Materials Sciences, Indian Association for the Cultivation of Science Jadavpur Kolkata-700032 India
Institute of Nano Science and Technology Knowledge City, Sector 81 Mohali 140306 India.
Nanoscale Adv. 2021 Aug 9;3(19):5570-5575. doi: 10.1039/d1na00446h. eCollection 2021 Sep 28.
Tailoring the hierarchical self-assembly of metal nanoclusters (NCs) is an emergent area of research owing to their precise structure and flexible surface environment. Herein, the morphological evolution from rods to platelets to ribbon-like structures through self-assembly of Cu NCs is dictated by the positional isomerism of the surface capping ligand, dimethylbenzenethiol (DMBT). Besides cuprophilic interaction, the interplay between π-π stacking and agostic interaction (Cu⋯H-C) directs the inter-NC organization into different ordered architectures. The excited-state relaxation dynamics of the red phosphorescent assembled structures has been correlated with their compactness and the degree of bonding interactions present.
由于金属纳米团簇（NCs）具有精确的结构和灵活的表面环境，定制其分级自组装是一个新兴的研究领域。在此，通过铜纳米团簇的自组装，从棒状到片状再到带状结构的形态演变是由表面封端配体二甲基苯硫醇（DMBT）的位置异构决定的。除了亲铜相互作用外，π-π堆积和 agostic 相互作用（Cu⋯H-C）之间的相互作用将纳米团簇间的组织引导成不同的有序结构。红色磷光组装结构的激发态弛豫动力学与其紧凑性和存在的键合相互作用程度相关。
