系列具有反式-1,4-环己烷二甲酸根的镧系金属有机骨架中的肉桂醛感应和发光颜色调谐。
Cinnamal Sensing and Luminescence Color Tuning in a Series of Rare-Earth Metal-Organic Frameworks with Trans-1,4-cyclohexanedicarboxylate.
机构信息
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
Department of Natural Sciences, Novosibirsk State University, 2 Pirogova St., 630090 Novosibirsk, Russia.
出版信息
Molecules. 2021 Aug 25;26(17):5145. doi: 10.3390/molecules26175145.
Three isostructural metal-organic frameworks ([Ln(phen)(NO)(chdc)]·2DMF (Ln = Y for , Eu for or Tb for ; phen = 1,10-phenanthroline; Hchdc = -1,4-cyclohexanedicarboxylic acid) were synthesized and characterized. The compounds are based on a binuclear block {M(phen)(NO)(OOCR)} assembled into a two-dime nsional square-grid network containing tetragonal channels with 26% total solvent-accessible volume. Yttrium ()-, europium ()- and terbium ()-based structures emit in the blue, red and green regions, respectively, representing the basic colors of the standard RGB matrix. A doping of Eu and/or Tb centers into the Y-based phase led to mixed-metal compositions with tunable emission color and high quantum yields (QY) up to 84%. The bright luminescence of a suspension of microcrystalline in DMF (QY = 78%) is effectively quenched by diluted cinnamaldehyde (cinnamal) solutions at millimolar concentrations, suggesting a convenient and analytically viable sensing method for this important chemical.
三种同构的金属有机骨架([Ln(phen)(NO)(chdc)]·2DMF（Ln = Y（对于 ），Eu（对于 ）或 Tb（对于 ）；phen = 1,10-菲咯啉；Hchdc = -1,4-环己二羧酸）被合成并进行了表征。这些化合物基于双核块{M(phen)(NO)(OOCR)}组装成二维正方形网格网络，其中包含具有 26%总溶剂可及体积的四方孔道。基于钇()、铕()和铽()的结构分别在蓝色、红色和绿色区域发射，代表了标准 RGB 矩阵的基本颜色。Eu 和/或 Tb 中心的掺杂导致可调发射颜色和高达 84%的高量子产率（QY）的混合金属组成。在 DMF 中悬浮的微晶体的明亮荧光（QY = 78%）被稀释的肉桂醛（肉桂醛）溶液在毫摩尔浓度下有效猝灭，这表明对于这种重要的化学物质，存在一种方便且在分析上可行的传感方法。
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