Non-Phase-Transition Luminescence Mechanochromism of a Copper(I) Coordination Polymer

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• 作者：Eunjin Kwon ; Jineun Kim ; Kang Yeol LeeTae Ho Kim
• 刊名：Inorganic Chemistry
• 出版年：2017
• 出版时间：January 17, 2017
• 年：2017
• 卷：56
• 期：2
• 页码：943-949
• 全文大小：508K
• ISSN：1520-510X

文摘

A copper(I) coordination polymer, [Cu₂I₂L₂]_n (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.