Dynamic Behavior of Alloy Clusters in Solution by LC/MS and Its Effect on Physical Properties

2021 Fiscal Year Final Research Report

• Project/Area Number: 20K21178
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 32:Physical chemistry, functional solid state chemistry, and related fields
• Research Institution: Tokyo University of Science
• Principal Investigator: NEGISHI Yuichi 東京理科大学, 理学部第一部応用化学科, 教授 (20332182)
• Project Period (FY): 2020-07-30 – 2022-03-31
• Keywords: 合金クラスター / 動的挙動 / 金属クラスター

Outline of Final Research Achievements

In this study, we succeeded in creating new metal nanoclusters (NCs) by varying the amount of thiol, the central atom of the precursor metal NCs, and the reaction time in the ligand exchange reaction of metal NCs. Furthermore, by following the reaction process using mass spectrometry (MS) and reversed-phase high-performance liquid chromatography (RP-HPLC), it was interpreted that the reaction pathway and the chemical composition of the products in the ligand exchange reaction can be controlled. These indicate that a larger variety of metal NCs can be synthesized in a size-selective manner than is currently possible.

Free Research Field

物理化学/ナノ構造化学

Academic Significance and Societal Importance of the Research Achievements

本研究を通じて得られた3つの金属NCsはいずれも過去に選択的合成の報告がなされていない金属NCsである。また、本研究では質量分析（MS）と逆相高速液体クロマトグラフィー（RP-HPLC）を用いて反応過程を追跡することで、配位子交換反応のメカニズム解明に新たな知見をもたらした。今後もMSとRP-HPLCを組み合わせることで、これまで未解明であった様々な反応について、そのメカニズムの詳細が明らかにされることが期待される。