Luminescent Mechanochromism and Spontaneous Phase Transformation of Gold(I) Isocyanide Complexes
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- Ito Hajime
- Division of Chemical Process Engineering and Frontier Chemistry Center (FCC), Graduate School of Engineering, Hokkaido University
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- Seki Tomohiro
- Division of Chemical Process Engineering and Frontier Chemistry Center (FCC), Graduate School of Engineering, Hokkaido University
Bibliographic Information
- Other Title
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- 金(I)イソシアニド錯体の発光性メカノクロミズムと自発的相転移現象
- カネ(I)イソシアニド サクタイ ノ ハッコウセイ メカノクロミズム ト ジハツテキソウ テンイ ゲンショウ
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Abstract
Aryl gold isocyanide complexes are found to have interesting photoluminescence properties in the solid state, being referred to as luminescence mechanochromism and molecular domino. A gold complex containing two gold atoms, {[pentafluorophenylgold]2(μ-1,4-diisocyanobenzene)}, shows significant change in its luminescence property when mechanical stimulus such as grinding or pressing is applied on its solid sample. This “luminescence mechanochromism” is most probably attributed to a ground state structure change from the microcrystalline to the amorphous state accompanied to the optical properties alternations. Different feature observed in phenyl(phenyl isocyanide)gold(I) complex is “molecular domino”, where even a small mechanical stimulus can trigger the structure change of the entire crystal. This spontaneous structure change proceeded in a single-crystal-to-single-crystal fashion with the drastic emission color alternation. These features enable sub-molecular-level structure investigation with single X-ray crystallographic analysis and visual observation of the phase transition under UV light irradiation during the mechano-induced phase change.
Journal
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- Bulletin of Japan Society of Coordination Chemistry
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Bulletin of Japan Society of Coordination Chemistry 62 (0), 3-11, 2013
Japan Society of Coordination Chemistry