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首页> 外文期刊>Crystal growth & design >Tuning Photoluminescent Properties of Silver(I)-Based Coordination Networks through their Supramolecular Interactions
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Tuning Photoluminescent Properties of Silver(I)-Based Coordination Networks through their Supramolecular Interactions

机译：通过其超分子相互作用调整银（I）的光致发光性能

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摘要

Eight novel luminescent silver(I)-based coordination networks have been self-assembled from two flexible dicyanomethylene ligands bearing diethylene (LI) and triethylene glycol (L2) spacers and silver salts (AgClO4 or AgBF4) in dichloromethane/toluene or clichloromethane/benzene solvents. Single-crystal X-ray diffraction reveals a variety of geometries around the silver(I) ion, resulting in mono-, bi-, and tetranudear networks with rare topologies. The coordination networks show two-dimensional architectures through coordination of the cyano and glycolic groups to the silver(I) ions. The three-dimensional supramolecular arrangement is formed through weak pi...pi and Ag...pi interactions as well as hydrogen bonds between water molecules and ClO4- and BF4- counterions. The silver(I)-based coordination networks display green to yellow emissions in the solid state, with quantum yields (Phi(em)) varying from 1.1 to 8.5%. The emission properties are attributed to intraligand charge transfer and metal-perturbed intraligand transitions. Supramolecular interactions, such as Ag...pi and pi...pi interactions, play an important role in the photophysical properties of these compounds.
机译：基于二乙烯（Li）和三乙二醇（L2）间隔物和三甲基甲烷/甲苯或甲苯甲烷/苯溶剂的三甘醇（L2）间隔物和银盐（AgClO4或AgBF4）自组装，基于八种新的发光银（I）的配体。 。单晶X射线衍射显示银（I）离子周围的各种几何形状，导致具有稀有拓扑的单一，二维和四触电网络。协调网络通过将氰基和乙醇基团的配位向银（I）离子的协调显示二维架构。通过弱PI ... PI和Ag ... PI相互作用以及水分子和CLO4-和BF4-抗衡离子之间的氢键形成三维超分子布置。基于银（I）的协调网络在固态中显示绿色至黄色排放，量子产率（PHI（EM））从1.1到8.5％变化。排放性能归因于intraligand电荷转移和金属扰动的intraligand转变。超分子相互作用，例如Ag ... PI和PI ... PI相互作用，在这些化合物的光物理性质中起重要作用。

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  • 来源
    《Crystal growth & design》 |2017年第11期|共10页
  • 作者

    Matos Catiucia R. M. O.; Monteiro Flavia G. A.; Miranda Fabio da S.; Pinheiro Carlos B.; Bond Andrew D.; Ronconi Celia M.;

  • 作者单位

    Univ Fed Fluminense Dept Quim Inorgan Outeiro Sao Joao Batista S-N Campus Valonguinho BR-24020141 Niteroi RJ Brazil;

    Inst Fed Educ Ciencia &

    Tecnol IFRJ Unidade Maracana Rio De Janeiro RJ Brazil;

    Univ Fed Fluminense Dept Quim Inorgan Outeiro Sao Joao Batista S-N Campus Valonguinho BR-24020141 Niteroi RJ Brazil;

    Univ Fed Minas Gerais Dept Fis Belo Horizonte MG Brazil;

    Univ Cambridge Dept Chem Cambridge England;

    Univ Fed Fluminense Dept Quim Inorgan Outeiro Sao Joao Batista S-N Campus Valonguinho BR-24020141 Niteroi RJ Brazil;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 晶体学;
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