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On-surface molecular self-assembly in solution has the ability to produce two-dimensional (2D) materials with unique surface nanostructures that have the potential to create new functionalities. The surface is completely different from the uniform flat surface of conventional 2D materials such as graphene, MoS2, and 2D van der Waals nanosheets. The recently developed on-surface chemical synthesis of amino-ferrocene nanoclusters on a graphene oxide (GO) nanosheet is a method based on molecular self-assembly. Here, this method is applied to other ferrocene derivatives whose ferrocene units are covalently bonded to an amino group and several other molecules. The structure of the on-surface synthesized nanoclusters is analyzed by a high-resolution transmission electron microscopy and atomic force microscopy. The molecules in the nanoclusters are densely and regularly arranged, and the distance between the Fe ions of the constituent molecules is longer than that in the amino-ferrocene nanoclusters. Band-through electron transfer occurs between the Fe ions and the GO nanosheet, generating unpaired 3d electrons whose magnetic state is in the high spin state (S = 5/2). The present study demonstrates the feasibility of the design and synthesis of functional molecular nanostructures with molecular precision by on-surface chemistry, leading to the fabrication of nanoscale building blocks with molecular precision and 2D platforms for next-generation molecular spintronic and neuromorphic devices.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: On-surface synthesis, ferrocene derivative, nanocluster

刊行年月日: 2024-08-01

出版者: OAE Publishing Inc.

掲載誌:

• Chemical Synthesis (ISSN: 27695247) vol. 4 issue. 3 42

研究助成金:

• 日本学術振興会 KAKENHI (Grant number: 21K04821)

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.20517/cs.2023.76

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更新時刻: 2024-09-03 08:30:28 +0900

MDRでの公開時刻: 2024-09-03 08:30:28 +0900