ロバート・デラウナイが使用したコバルトベースの紫色の色素における構造-光学特性関係
Victor Gonzalez1, Gilles Wallez2,3,4, Didier Gourier2,4
1Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, 91190 Gif-sur-Yvette, France.
Journal of the American Chemical Society
|January 8, 2025
まとめ
この研究は アーティストロバート・デラウナイが使った 無機紫色の色素を 化学的に分析しています 研究者はコバルト・リン酸塩とアルセネート族の構造と色の関係を確立し 20世紀初頭の芸術におけるその使用に関する洞察を明らかにしました
科学分野:
- アート 保存 科学
- 無機化学
- 材料科学
背景:
- 紫色の色素は,特にコバルト基の色素は,産業の進歩に伴い,19世紀後半から20世紀初頭の芸術で人気を得ました.
- 現代の絵画で広く使用されているにもかかわらず,コバルトリン酸塩とアルセナート紫色の色素の化学的および構造的性質は未熟のままです.
- フランスの画家であるロバート・デラウネは 初期の作品で これらの紫色の色素を用いました
研究 の 目的:
- ロバート・デラウナイが使った 無機紫色の色素を 化学的に特徴づけるために
- コバルトリン酸とアルセネート化合物の結晶構造と色 (色彩) の関係を確立する.
- デラウネの傑作のピグメントの構造と 光学特性を調べるため
主な方法:
- コバルト・フォスファートとアルセネート材料の合成
- シンクロトロン放射線に基づく高角解像度X線粉砕 (XRD) を用いた特徴化.
- 紫外線-可視-近赤外線 (UV-VIS-NIR) のスペクトロスコーピーによる光学分析.
- 美術品のインシットXRD (イメージングモード) と光ファイバーUV対NIR反射スペクトロスコーピー
主要な成果:
- コバルト - リン / (Co-P/As) 族の無機化合物の構造と色の関係が初めて確立されました.
- 特定された構造と化学組成は,観察された紫色の色素に責任があります.
- ロバート・デラウネの初期の絵画に これらの色素の存在と特徴が確認されました
結論:
- 無機の紫色の色素の構造化学は,色素の特性に大きな影響を与えます.
- この研究は ロバート・デラウネイや その時代の他のアーティストが 使用した材料について 重要な化学的洞察を提供している.
- 20世紀初頭の芸術の保存と分析に役立つ.
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