A Comparative Study on the Luminescence of the Cd2＋ and Mn2＋ Coordination Polymers Based on the Same Mixed Ligands  

作　　者：Zhaofeng Wu Xiaoying Huang 

机构地区：[1]State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China [2]University of Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Chinese Journal of Chemistry》2016年第7期703-708,共6页中国化学（英文版）

摘　　要：Presented here is the solvothermal preparation of two luminescent coordination polymers （L-CPs） based on the same mixed ligands, namely [Cd2（1,4-NDC）2（dppe）] （1） and [Mn3（OH）2（1,4-NDC）2（dppe）（H2O）] （2） （1,4-NDCH2 = 1,4-naphthalene dicarboxylic acid, dppe---- 1,3-di（4-pyridyl）propane）. Both the title compounds feature a neutral three-dimensional （3D） network. Photoluminescence （PL） studies indicated that the compound 1 based on d10 Cd2＋ exhibited dual emissions with tunable intensities that could result in direct white-light emission based on the in- traligand charge transfer （LLCT）; while the compound 2 showed a single band of yellow emission based on the charge transfer between the ligands and the metal ion （LMCT）, due to the partially filled d-orbital of Mn2＋ ion. The temperature-dependent powder X-ray diffraction patterns （PXRD） and PL spectra were further measured to identify their thermal stabilities. This work may provide a certain guiding significance for exploiting L-CPs based on different metal ions.Presented here is the solvothermal preparation of two luminescent coordination polymers （L-CPs） based on the same mixed ligands, namely [Cd2（1,4-NDC）2（dppe）] （1） and [Mn3（OH）2（1,4-NDC）2（dppe）（H2O）] （2） （1,4-NDCH2 = 1,4-naphthalene dicarboxylic acid, dppe---- 1,3-di（4-pyridyl）propane）. Both the title compounds feature a neutral three-dimensional （3D） network. Photoluminescence （PL） studies indicated that the compound 1 based on d10 Cd2＋ exhibited dual emissions with tunable intensities that could result in direct white-light emission based on the in- traligand charge transfer （LLCT）; while the compound 2 showed a single band of yellow emission based on the charge transfer between the ligands and the metal ion （LMCT）, due to the partially filled d-orbital of Mn2＋ ion. The temperature-dependent powder X-ray diffraction patterns （PXRD） and PL spectra were further measured to identify their thermal stabilities. This work may provide a certain guiding significance for exploiting L-CPs based on different metal ions.

关 键 词：coordination polymer photoluminescence study white emitting 

分 类 号：O[理学]