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.
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。
