Analogous self-assembly and crystallization: a chloride-directed orientated self-assembly of Cu nanoclusters and subsequent growth of Cu2-xS nanocrystals
Analogous self-assembly and crystallization: a chloride-directed orientated self-assembly of Cu nanoclusters and subsequent growth of Cu2-xS nanocrystals
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类似的自组装和结晶：Cu 纳米团簇的氯化物定向自组装以及随后的 Cu2-xS 纳米晶体的生长
作者：
Liu Jiale;Tian Ye;Wu Zhennan;Ai Lin;Liu Yi;Cui Jianli;Yu Weili;Zhang Hao;Yang Bai
自组装和晶化是控制纳米材料形貌的两种常用方法，它们有许多相似之处。在这项工作中，氯化物用于指导Cu纳米团簇的自组装过程和随后的Cu2−xS纳米晶体的生长。有意义的是，氯化物既促进了Cu纳米团簇自组装结构从一维（1D）到二维的转变，又促进了Cu2−xS纳米晶体从纳米棒到纳米片的转变。这种影响归因于氯离子在纳米团簇和纳米晶体的特定面上的选择性吸附，这改变了自组装过程中纳米团簇间的弱相互作用，并抑制了Cu2−xS面在自组装生长过程中的活性。目前的结果表明，用于指导纳米晶体的形貌的方法是可扩展的，以控制纳米团簇自组装的趋势。
Self-assembly and crystallization are two common methods to control the morphologies of nanomaterials, which have many similarities. In this work, chloride is used to direct the self-assembly process of Cu nanoclusters and the subsequent growth of Cu2−xS nanocrystals. Meaningfully, chloride both promotes the transformation of Cu nanocluster self-assembled architectures from one-dimensional (1D) to 2D, and facilitates the transformation of Cu2−xS nanocrystals from nanorods to nanosheets. Such an influence is attributed to the selective adsorption of chloride ions on the specific facets of nanoclusters and nanocrystals, which alters the inter-nanocluster weak interactions during self-assembly and suppresses the activity of Cu2−xS facets during nanocrystal growth. The current results indicate that the method used to direct the morphologies of nanocrystals is extendable to control the tendency of nanocluster self-assembly.