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非放射性トリフォスフィンリガンドの利用により,螺旋的な複合体へとメカノクロミック崩壊する発光ゴールド (I) ボックスを構築する
Daniel T Walters1, Reza Babadi Aghakhanpour1, Xian B Powers1
1Department of Chemistry , University of California, Davis , One Shields Avenue , Davis , California 95616 , United States.
Journal of the American Chemical Society
|May 1, 2018
まとめ
独特な箱状の構造を持つ新しい発光金 ((I) コンプレックスが合成されました. 機械的研磨により 青色を放出する結晶は 緑色を放出する無形な固体へと変化し 新しいメカノクロミックな変換メカニズムを明らかにします
科学分野:
- 協調化学
- 材料科学
- 固体化学
背景:
- 金 ((I) 複合体は,その多様な構造と発光特性で知られている.
- メカノクロミズムは 機械的な力によって 発光が変化する現象で 固体材料では興味深い現象です
- 多核金複合体の構造-特性関係を理解することは,新しい機能的材料の開発に不可欠です.
研究 の 目的:
- 箱のような構造を持つ新鮮な発光金 ((I) 複合体を合成し特徴づける.
- 機械的に研磨する際にこれらの金 ((I) 複合体のメカノクロミックな振る舞いを調査する.
- 観察されたメカノクロミズムの基礎となる構造的変換とメカニズムを明らかにする.
主な方法:
- 単一結晶のX線微分を含む,金 (I) 複合体の合成と結晶学的特徴づけ.
- 発光結晶の機械的研磨
- 粉砕前と後の固体材料の光学分析 (発光).
- メカノクロミック製品の構造分析
主要な成果:
- 新しい箱状の黄金のクラスター[Au6Triphos) 4Cl5+が成功して合成され,特徴づけられました.
- 青色を発する [Au6(Triphos) 4Cl>5+の結晶を機械的に研磨すると,緑色を発する無形な固体が生じる.
- 変換にはブリッジヘリケートカチオン, [μ-Cl{Au3(Triphos) 2}2]5+が形成され,このメカノクロミック変化のメカニズムが提案されています.
- 青と緑の両方の放射性種の結晶構造が決定された.
結論:
- この研究は,輝く金 (I) 複合体における独特のメカノクロミックな変換を証明している.
- 箱状の黄金のクラスターは,機械的な力によって橋渡しヘリケート構造に変換され,発光色が変化します.
- この研究は,多核金複合体に基づくメカノクロミック材料の設計に関する洞察を提供します.
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