Kwon Eunjin, Kim Jineun, Lee Kang Yeol, Kim Tae Ho
Department of Chemistry (BK21 plus) and Research Institute of Natural Science, Gyeongsang National University , Jinju 52828, Korea.
Inorg Chem. 2017 Jan 17;56(2):943-949. doi: 10.1021/acs.inorgchem.6b02571. Epub 2016 Dec 29.
A copper(I) coordination polymer, [CuIL] (CP 1), shows luminescence mechanochromism with a color change from greenish-blue to yellow upon the application of pressure. Powder X-ray diffraction and Raman studies reveal that the changes in the bond lengths in crystalline CP 1 are the main cause of luminescence mechanochromism. The luminescence mechanochromic process of CP 1 preserves its crystallinity with a small lattice distortion, despite very high pressure, and it is a non-phase-transition process. After the addition of several drops of acetonitrile to the ground and compressed samples, the original greenish-blue emissive and crystalline states are restored. Therefore, the luminescence color conversion processes are fully reversible.
一种铜（I）配位聚合物[CuIL]（CP 1）在施加压力时表现出发光机械变色现象，颜色从绿蓝色变为黄色。粉末X射线衍射和拉曼研究表明，晶体CP 1中键长的变化是发光机械变色的主要原因。尽管压力很高，但CP 1的发光机械变色过程在晶格畸变较小的情况下保持其结晶度，这是一个非相变过程。在研磨和压缩后的样品中加入几滴乙腈后，可恢复到原来的绿蓝色发光和结晶状态。因此，发光颜色转换过程是完全可逆的。
