Introduction of a Biphenyl Moiety for a Solvent-Responsive Aryl Gold(I) Isocyanide Complex with Mechanical Reactivation.
Introduction of a Biphenyl Moiety for a Solvent-Responsive Aryl Gold(I) Isocyanide Complex with Mechanical Reactivation.
复制标题
DOI：
10.1021/acs.inorgchem.6b02107
复制
发表时间：
2016-11
影响因子：
4.6
通讯作者：
T. Seki;Mingoo Jin;Hajime Ito
中科院分区：
文献类型：
--
作者：
T. Seki;Mingoo Jin;Hajime Ito
对挥发性有机溶剂敏感的发光化合物可用于检测有害气体。尽管已经报道了这样的化合物，但是使用一种化合物来区分各种类型的挥发性有机化合物仍然具有挑战性。我们报道了一系列的金异氰化物配合物，形成不同的晶体结构，具有不同的发射性能，这可以通过机械刺激和溶剂添加相互转换。在这里，我们报告了将联苯单元引入异氰化金支架中，（表示为络合物3）能够通过形成11种含溶剂的晶体结构3/溶剂[溶剂可以是CHCl 3、吡啶（Py）、CH 2Cl 2、CH 2Br 2、二甲基乙酰胺（DMA）、乙醛（AcH）、CH 3CN、DMF、（S）-环氧丙烷（SPO）、外消旋-环氧丙烷（racPO）、或丙酮]具有不同的发射特性（发射最大值为490-580 nm）。3/溶剂的机械刺激提供无溶剂夹杂物的无定形3。所得到的3grounds可以再次检测挥发性化合物，形成3/溶剂伴随发射颜色的变化。我们还得到了12个3的单晶，其中包括11个溶剂化的3/溶剂和一个无溶剂的3/无。3在3/溶剂和3/无中的分子排列都是不同的。3/溶剂和3/无的各种晶体学参数与它们相应的光学性质的比较表明，3的各种结构性质的组合影响3的光学性质。这项研究表明，联苯部分的引入可能是一个有用的设计，开发通用的指示剂，通过形成多个发光晶体结构的溶剂。
Luminescent compounds that are sensitive to volatile organic solvents are useful for detection of harmful gases. Although such compounds have been reported, discrimination of various types of volatile organic compounds using one compound remains challenging. We reported a series of gold isocyanide complexes that form various crystalline structures with distinct emission properties, which can be interconverted by mechanical stimulation and solvent addition. Here, we report that introduction of a biphenyl unit into a gold isocyanide scaffold (denoted complex 3) enables discrimination of various volatile organic compounds by forming 11 solvent-containing crystal structures 3/solvent [solvent can be CHCl3, pyridine (Py), CH2Cl2, CH2Br2, dimethylacetamide (DMA), acetaldehyde (AcH), CH3CN, DMF, (S)-propylene oxide (SPO), rac-propylene oxide (racPO), or acetone] with different emission properties (emission maxima of 490-580 nm). Mechanical stimulation of 3/solvent affords amorphous 3ground without solvent inclusion. The resulting 3ground can again detect volatile compounds by forming 3/solvent with concomitant emission color changes. We also afforded a dozen single crystals of 3, which include 11 solvated 3/solvent and one solvent-free 3/none. The molecular arrangements of 3 in 3/solvent and 3/none are all different. Comparison of various crystallographic parameters of 3/solvent and 3/none with their corresponding optical properties indicates that a combination of various structural properties of 3 affects the optical properties of 3. This study reveals that the introduction of a biphenyl moiety could be a useful design to develop versatile indicators for solvents through the formation of multiple luminescent crystal structure.