Zhang Ming-Xing, Yang Xiaofei, Zhang Kunming, Yin Jun, Liu Sheng Hua
Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, 430079, P.R. China.
Hubei Key Laboratory of Purification and Application of Plant Anti-cancer Active Ingredients, College of Chemistry and Life Science, Hubei University of Education, Wuhan, 430205, China.
Chemistry. 2021 Oct 21;27(59):14645-14652. doi: 10.1002/chem.202102180. Epub 2021 Sep 22.
A series of novel osmaindenes 1-6 bearing different substituents (CF , H, I, Br, OCH , N(Ph) ) has been synthesized by nucleophilic reaction of water with the corresponding aromatic osmanaphthalyne complexes. All osmaindenes 1-6 have been characterized by elemental analysis (EA) and nuclear magnetic resonance (NMR) spectroscopy, although the low solubilities of 3 and 4 precluded the accumulation of their C NMR spectra. Osmaindenes 2, 3 and 5 have also been characterized by single-crystal X-ray diffraction analysis. Subsequently, through solid-state fluorescence spectroscopy, mechanochromic studies, and powder X-ray diffraction (XRD) analysis, we found that osmaindenes 1-6 fluoresce at wavelengths in the range 500-800 nm, while also displaying reversible mechanochromic properties. The solid-state fluorescence emission of 1 after grinding extends into the near-infrared region. This research provides new insight into the design and synthesis of metallic materials with excellent mechanochromic properties.
通过水与相应的芳香族锇萘配合物的亲核反应，合成了一系列带有不同取代基（CF 、H、I、Br、OCH 、N(Ph) ）的新型锇茚1-6。所有的锇茚1-6均通过元素分析（EA）和核磁共振（NMR）光谱进行了表征，不过3和4的低溶解度妨碍了它们的碳核磁共振光谱的积累。锇茚2、3和5也通过单晶X射线衍射分析进行了表征。随后，通过固态荧光光谱、机械变色研究和粉末X射线衍射（XRD）分析，我们发现锇茚1-6在500-800 nm波长范围内发出荧光，同时还表现出可逆的机械变色特性。研磨后1的固态荧光发射延伸至近红外区域。这项研究为具有优异机械变色性能的金属材料的设计与合成提供了新的见解。
