碘化亚铜配位聚合物的单光子和双光子激发发光  

One-and Two-photon Excited Photoluminescence of Cuprous Iodide Coordination Polymer

作　　者：尹少云 莫钧婷 潘梅[1] YIN Shao-yun;MO Jun-ting;PAN Mei(School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China;Analysis and Test Center, Guangdong University of Technology, Guangzhou 510006, China)

机构地区：[1]中山大学化学学院,广东广州510275 [2]广东工业大学分析测试中心,广东广州510006

出　　处：《发光学报》2020年第7期782-790,共9页Chinese Journal of Luminescence

基　　金：国家自然科学基金(21771197,21821003)资助项目。

摘　　要：利用两种半柔性的-不饱和双吡啶端基配体与CuI配位,分别通过结构转化法和原位组装法,得到两种具有{[CuIL]·solvents}n结构通式的二维和三维碘化亚铜配位聚合物,分别命名为Cu-3和Cu-4。利用X射线单晶衍射、X射线粉末衍射和元素分析等表征方法确定了Cu-3和Cu-4的结构信息。研究这两种配位聚合物的光物理性能发现,用紫外光激发时,Cu-3和Cu-4均表现出单一发射峰,最大波长分别为513 nm的蓝绿光和555 nm的黄色光,归属于卤素到配体的电荷转移(3XLCT)。同时,这两种配位聚合物均表现出双光子激发发光性质,有望应用于生物成像领域。Through structural transition method or in-situ assembly method,two semi-flexibleπ-conjugated unsaturated bipodal-ligands were coordinated with CuI to obtain 2-D or 3-D cuprous iodide coordination polymerizations with the general structure of{[CuIL]·solvents}n,namely Cu-3 and Cu-4,respectively.The structural information of Cu-3 and Cu-4 was determined by X-ray single crystal diffraction,powder X-ray diffraction and elemental analysis.Studying the photophysical properties of these two coordination polymers revealed that when excited by ultraviolet light,Cu-3 and Cu-4 showed a single emission peak with blue-green light at 513 nm and yellow light at 555 nm,respectively,which were attributed to halogen to ligand charge transfer(3XLCT)state.At the same time,these two coordination polymers both exhibit two-photon excited luminescence properties,and are expected to be used in the field of biological imaging.

关 键 词：碘化亚铜 配位聚合物 卤素到配体电荷转移 双光子发光 

分 类 号：O641[理学—物理化学]