Efficient Europium Sensitization via Low-Level Doping in a 2-D Bismuth-Organic Coordination Polymer
Efficient Europium Sensitization via Low-Level Doping in a 2-D Bismuth-Organic Coordination Polymer
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DOI：
10.1021/acs.cgd.2c01475
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发表时间：
2023-04
影响因子：
3.8
通讯作者：
Alexander C. Marwitz;Anuj K. Dutta;Morgan A McDonald;K. Knope
中科院分区：
文献类型：
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作者：
Alexander C. Marwitz;Anuj K. Dutta;Morgan A McDonald;K. Knope
合成了一种含有 1,10-菲咯啉 (phen) 和 2,5-吡啶二甲酸 (PDC) 的新型有机铋化合物，并通过单晶 X 射线衍射对其结构进行了表征。该结构由 2-D {Bi(phen)(HPDC)(PDC)}n 片组成，其中 PDC 配体通过三种独特的键合模式桥接金属中心。 2-D片材通过强氢键相互作用进一步连接，形成3-D超分子网络。母体化合物在室温下呈固态，显示出黄色光致发光。进行了掺杂研究，将 Eu3+ 纳入结构中，统计上少量取代 Bi3+（Eu3+ 相对于 Bi3+ 为 1、5 和 10 mol%）。所有三种化合物均表现出特征性的 Eu3+ 发射，总量子产率高达 16.0%，敏化效率在 0.21 至 0.37 之间，具体取决于 Eu3+ 掺杂百分比。
A new bismuth-organic compound containing 1,10-phenanthroline (phen) and 2,5-pyridinedicarboxylic acid (PDC) was synthesized and structurally characterized by single-crystal X-ray diffraction. The structure consists of 2-D {Bi(phen)(HPDC)(PDC)}n sheets wherein the PDC ligands bridge metal centers via three unique bonding modes. The 2-D sheets are further connected through strong hydrogen-bonding interactions to form a 3-D supramolecular network. The parent compound displayed yellow photoluminescence in the solid state at room temperature. Doping studies were undertaken to incorporate Eu3+ into the structure, statistically replacing Bi3+ in small quantities (1, 5, and 10 mol % Eu3+ relative to Bi3+). All three compounds displayed characteristic Eu3+ emission, with total quantum yields as high as 16.0% and sensitization efficiencies between 0.21 and 0.37 depending on the Eu3+ doping percentage.