...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Crystal growth & design >Metal-Organic Frameworks Based on a Bent Triazole Dicarboxylic Acid: Magnetic Behaviors and Selective Luminescence Sensing Properties
【24h】

Metal-Organic Frameworks Based on a Bent Triazole Dicarboxylic Acid: Magnetic Behaviors and Selective Luminescence Sensing Properties

机译：基于弯曲三唑二羧酸的金属 - 有机框架：磁性行为和选择性发光感应特性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Four new metal-organic frameworks (MOFs) constructed from the bent triazole dicarboxylic acid ligand 3,5-bis(4'-carboxyphenyl)-1,2,4-triazole (H(2)bct) have been discovered by a solvothermal method. These MOFs, [M-5(mu(2)-H2O)(2)(mu(3)-OH)(2)(bct)(4)(H2O)(8)]center dot 4H(2)O}(n) (1, M = Co; 2, M = Ni), {[Cd-2(bct)(2)(bipy)]center dot 5H(2)O}(n) (3) (bipy = 4,4'-bipyridine), and {[Cd(bct)(tib)]center dot H2O-DMF}(n) (4) (tib = 1,3,5-tris(1-imidazolyObenzene), exhibit diverse coordination modes and fascinating crystal structures. The crystallographic structures, thermal stabilities, photoluminescence, and magnetic properties have been studied. 1 and 2 share the identical structural features based on planar pentanuclear clusters except for the central ions, where the one-dimensional chain structures are constructed from the pentanuclear secondary building units linked with bct(2-) ligands, while 3 and 4 have similar layered structures. Magnetic analyses of 1 and 2 reveal that an overall antiferromagnetic coupling within the pentanuclear Co(II) cluster nodes are observed, which can be switched to strong ferromagnetic coupling when using Ni(II) to replace the Co(II) sites. Both 3 and 4 show intense blue emission under ultraviolet excitation. Moreover, 4 can be applied as a selective sensor for quantitatively testing the concentration of acetone in water based on the luminescence quenching effect, with a quenching constant (K-sv) value of 12.89 L mol(-1) in water.
机译：通过溶剂热法发现由弯曲三唑二羧酸配体3,5-双（4'-羧基苯基）-1,2,4-三唑（H（2）BCT）构成的四种新的金属有机框架（MOF） 。这些MOF，[M-5（2）-H 2 O）（2）（MU（3）-OH）（2）（2）（BCT）（4）（H2O）（8）]中心点4h（2）o} （n）（1，m = co; 2，m = ni），{[cd-2（bct）（2）（2）（bipy）]中心点5h（2）o}（n）（3）（bipy = 4 ，4'-biphyridine），和{[Cd（BCT）（Tib）]中心点H2O-DMF}（n）（4）（Tib = 1,3,5-Tris（1-咪唑水溶液），表现出各种协调模式和迷人的晶体结构。已经研究了结晶结构，热稳定性，光致发光和磁性。1和2基于外离子除了基于平面浮动簇的相同结构特征，其中一维链结构由与BCT（2-）配体连接的五核型二次构建单元，而3和4具有相似的分层结构。磁分析为1和2，揭示了Pentanuclear Co（II）簇节点内的整体反铁磁耦合，可以是使用Ni（ii）时切换到强的铁磁耦合以取代CO（II）位点.3和图4显示了紫外激发下的强烈蓝色排放。此外，图4可以应用于基于发光淬火效果的丙酮在水中定量测试丙酮中的浓度，在水中淬火常数（K-SV）值为12.89μlmol（-1）。

著录项

  • 来源
    《Crystal growth & design》 |2019年第2期|共7页
  • 作者

    Zhang Yu-Xiao; Lin Hua; Wen Yuehong; Zhu Qi-Long;

  • 作者单位

    Chinese Acad Sci Fujian Inst Res Struct Matter State Key Lab Struct Chem Fuzhou 350002 Fujian Peoples R China;

    Chinese Acad Sci Fujian Inst Res Struct Matter State Key Lab Struct Chem Fuzhou 350002 Fujian Peoples R China;

    Chinese Acad Sci Fujian Inst Res Struct Matter State Key Lab Struct Chem Fuzhou 350002 Fujian Peoples R China;

    Chinese Acad Sci Fujian Inst Res Struct Matter State Key Lab Struct Chem Fuzhou 350002 Fujian Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 晶体学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号