...
首页> 外文期刊>Crystal growth & design >1D and 2D Silver-Based Coordination Polymers with Thiomorpholine-4-carbonitrile and Aromatic Polyoxoacids as Coligands: Structure, Photocatalysis, Photoluminescence, and TD-DFT Study
【24h】

1D and 2D Silver-Based Coordination Polymers with Thiomorpholine-4-carbonitrile and Aromatic Polyoxoacids as Coligands: Structure, Photocatalysis, Photoluminescence, and TD-DFT Study

机译:用硫代卟啉-4-腈和芳族聚氧酸作为Cooligands的1D和2D银基配位聚合物:结构,光催化,光致发光和TD-DFT研究

获取原文
获取原文并翻译 | 示例
           

摘要

Four silver-based coordination polymers, {[Ag(L)(2)](BF4)}(infinity) (1), {[Ag(H2BTC)(L)]center dot(H3BTC)}(infinity) (2), {[Ag-2(H2BTEC)(L)(2)]..3.33H(2)O}(infinity) (3), and [Ag(H(25)SSA)(L)](infinity) (4), were synthesized using thiomorpholine-4-carbonitrile (L) as the primary ligand and three aromatic polyoxoacids as coligands: trimesic (H3BTC), pyromellitic (H4BTEC), and 5-sulfosalicylic acid (H(35)SSA). Compounds 1 and 3 are two-dimensional, while 2 and 4 are one-dimensional. L acts as a bis-monodentate ligand, while the Ag(I) ion is three-coordinated in 2 and four-coordinated in all of the other compounds. The tetrahedral coordination of Ag(I) in 3 leads to an almost complete absence of intermolecular interactions with the metal center. All compounds show reasonable photocatalytic activity for photocatalytic degradation of mordant blue 9 dye, with reaction rates in the 0.036-0.056 min(-1) range. Changes in the reaction rates can be correlated with the type and coordination of the coligand. Complex 3 exhibits photoluminescence at 77 K, while 4 exhibits photoluminescence at both room temperature and 77 K. Luminescence lifetimes indicate electronic transitions of singlet parentage, where transitions are allowed. A TD-DFT study determined the contributions of individual singlet-singlet electronic excitations to the fluorescence, indicating that metal- intraligand transitions are responsible for luminescence in both complexes.
机译:四种基于银的配位聚合物,{[Ag(1)(2)](2)](BF4)}(Infinity)(1),{[Ag(H2BTC)(L)]中心点(H3BTC)}(Infinity)(2) ,{[ag-2(h2btec)(l)(2)] .. 3.33h(2)o}(无穷大)(3),和[ag(h(25)ssa)(l)](无限)( 4)使用硫代卟啉-4-丁腈(L)作为初级配体和三种芳族聚氧基酸作为Cooligands合成:Timesic(H3BTC),吡啉脲(H4BTEC)和5-磺化水杨酸(H(35)SSA)。化合物1和3是二维的,而2和4是一维的。 L作为双单态配体,而Ag(i)离子在2个和四个中的所有其他化合物中的四个配位。 Ag(I)在3中的四面体配位导致几乎完全没有与金属中心的分子间相互作用。所有化合物都显示出用于光催化的光催化活性,用于光催化的媒染媒介蓝9染料,0.036-0.056 min(-1)范围内的反应速率。反应速率的变化可以与Coligand的类型和配位相关。复合物3在77 k下表现出光致发光,而4在室温下表现出光致发光,77 K.发光寿命表示单次父母的电子转换,其中允许过渡。 TD-DFT研究确定了个体单态单态电子激发到荧光的贡献,表明金属脑内过渡是两种复合物中发光的原因。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号