A Chromogenic Macrocycle Exhibiting Cation-Selective and Anion-Controlled Color Change: An Approach to Understanding Structure−Color Relationships
摘要:
A N-azo-coupled macrocycle (1) with a NO2S2 donor set was synthesized as a chromoionophore and shown to exhibit Hg2+ selectivity; anion control of the color of the Hg2+ complex was observed. As a first approach, the nature of the color generation process was probed by determining the crystal structures of the two different colored species obtained with Perchlorate and iodide anions. The results can be explained in terms of a "Push-n-Pull Process", which serves to illustrate how the coordinating ability of the anion controls the color change through formation of endo- or exo-metal complexes. The use of "simple" salts to induce color-switching of the above complex species was also reported.
A Chromogenic Macrocycle Exhibiting Cation-Selective and Anion-Controlled Color Change: An Approach to Understanding Structure−Color Relationships
作者:Soo Jin Lee、Jong Hwa Jung、Joobeom Seo、Il Yoon、Ki-Min Park、Leonard F. Lindoy、Shim Sung Lee
DOI:10.1021/ol0602405
日期:2006.4.1
A N-azo-coupled macrocycle (1) with a NO2S2 donor set was synthesized as a chromoionophore and shown to exhibit Hg2+ selectivity; anion control of the color of the Hg2+ complex was observed. As a first approach, the nature of the color generation process was probed by determining the crystal structures of the two different colored species obtained with Perchlorate and iodide anions. The results can be explained in terms of a "Push-n-Pull Process", which serves to illustrate how the coordinating ability of the anion controls the color change through formation of endo- or exo-metal complexes. The use of "simple" salts to induce color-switching of the above complex species was also reported.
A Triple-Probe Channel NO<sub>2</sub>S<sub>2</sub>-Macrocycle: Synthesis, Sensing Characteristics and Crystal Structure of Mercury(II) Nitrate Complex
作者:Ji-Eun Lee、Kyu-Seong Choi、Moo-Lyong Seo、Shim-Sung Lee
DOI:10.5012/bkcs.2010.31.7.2031
日期:2010.7.20
excess Hg 2+ . Through above three observed results by the different techniques, we confirmed that the proposed chemosensor acts as the multiple-probe channel sensing material. The crystalstructure of mercury(II) nitrate complexs of L which shows a 1-D polymer network with a formula (Hg2(L)2(NO3)2(µ-NO3)2)n was also reported.
合成了一种基于以苯基三氰基乙烯基官能化的NO2S2-大环为基础的三探针通道型化学传感器,并对其传感特性进行了检测。加入 Hg 2+ 后,L 的粉红色溶液选择性地变为淡黄色。研究了 L 对所有被测金属离子的选择性荧光响应。结果表明,仅在Hg 2+ 的情况下观察到L的荧光大大增强。此外,对于添加过量 Hg 2+ ,L 表现出较大的阳极位移(~ 0.3 V)。通过以上三种不同技术的观察结果,我们证实了所提出的化学传感器作为多探针通道传感材料。还报道了 L 的硝酸汞 (II) 配合物的晶体结构,其显示一维聚合物网络,分子式为 (Hg2(L)2(NO3)2(µ-NO3)2)n。