Zhang Ziyou, Deng Dongping, Xu Xiaoqian, Zhang Jiangwei, Yan Shuai, Guo Zhiying, Dong Hongliang, Chen Zhiqiang, Su Zhi
Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210046, China.
Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China.
JACS Au. 2024 May 11;4(5):2050-2057. doi: 10.1021/jacsau.4c00259. eCollection 2024 May 27.
Luminescent chiral microcrystals with the Tb(COO) subunit indicated strong green mechano-luminescence under compression. Furthermore, piezofluorochromic behavior in the diamond anvil cell was observed, with the intensity tendency of decreasing-increasing-decreasing and a shortened lifetime upon compression, due to the reversible stretchable Tb-Tb interactions. The Tb-Tb distance upon compression was refined through situ high-pressure X-ray absorption spectra, which was consistent with the tendency of the piezofluorochromic intensity. high-pressure UV-vis absorption spectra, Fourier transform infrared spectra, and powder X-ray diffraction demonstrated the full recovery of after over 10 GPa compressions due to the semiflexible ligand. This work not only provided an ultrastable but also illustrated the relationship of the piezofluorochromic behavior with the detailed structural transformation for the first time.
具有Tb(COO)亚基的发光手性微晶在压缩下显示出强烈的绿色机械发光。此外，在金刚石砧盒中观察到压致荧光变色行为，由于可逆的可拉伸Tb-Tb相互作用，强度呈现出降低-增加-降低的趋势，并且在压缩时寿命缩短。通过原位高压X射线吸收光谱对压缩时的Tb-Tb距离进行了精修，这与压致荧光变色强度的趋势一致。高压紫外-可见吸收光谱、傅里叶变换红外光谱和粉末X射线衍射表明，由于半柔性配体，在超过10 GPa的压缩后完全恢复。这项工作不仅提供了一种超稳定的……，还首次阐明了压致荧光变色行为与详细结构转变之间的关系。
