一维钴(Ⅱ)/镍(Ⅱ)配位聚合物的合成、结构、磁性及荧光传感性质  

Synthesis,structures,magnetic and fluorescent sensing properties of 1D Co(Ⅱ)􀃭/Ni(Ⅱ)􀃭coordination polymers

作　　者：王璇 王记江[1] 唐龙[1] 郑懿丹 张欣 岳二林 白超 张玉琦[1] WANG Xuan;WANG Ji-Jiang;TANG Long;ZHENG Yi-Dan;ZHANG Xin;YUE Er-Lin;BAI Chao;ZHANG Yu-Qi(Yan′an City Key Laboratory of New Energy&New Functional Materials,Shaanxi Key Laboratory of Chemical Reaction Engineering,College of Chemistry and Chemical Engineering,Yan′an University,Yan′an,Shaanxi 716000,China)

机构地区：[1]延安大学化学与化工学院,延安市新能源新功能材料重点实验室,陕西省化学反应工程重点实验室,延安716000

出　　处：《无机化学学报》2023年第3期545-553,共9页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21373178);陕西省自然科学基础研究计划(No.2021JQ-614);陕西省教育厅自然科学基金(No.21JK0978);陕西省大学生创新创业训练计划项目(No.S_(2)02210719086)资助。

摘　　要：采用水热法合成了2个新的配位聚合物[Co(L)_(0.5)(1,4-bib)(H_(2)O)_(3)]n(1)和[Ni(L)_(0.5)(1,4-bib)(H_(2)O)_(3)]n(2)(H_(4)L=1,4-二(2,6-二甲基-3,5-二羧基吡啶基)苯,1,4-bib=1,4-双(1-咪唑基)苯),通过X射线单晶及粉末衍射、元素分析、红外光谱分析和热重分析对其结构进行表征。结构分析表明配合物1和2为异质同构,均为一维结构。通过变温磁化率测量发现,配合物1和2中的Co􀃭/Ni􀃭离子之间存在反铁磁相互作用。此外,配合物1可通过荧光猝灭法检测头孢克肟(CEF),配合物2可用来检测四环素(TET),该方法灵敏度高、选择性好,其检出限分别为0.86μmol·L^(-1)(CEF)和0.49μmol·L^(-1)(TET)。Two new coordination polymers[Co(L)_(0.5)(1,4-bib)(H_(2)O)_(3)]n(1)and[Ni(L)0.5(1,4-bib)(H_(2)O)_(3)]n(2)(H_(4)L=1,4-bis(2,6-dimethyl-3,5-dicarboxypyridyl)benzene,1,4-bib=1,4-bis(1-imidazolyl)benzene)were synthesized by hydrothermal method.Their structures were characterized by single crystal and powder X-ray diffraction,elemental analysis,infrared spectroscopic analysis,and thermogravimetric analysis.Structural analysis shows that complexes 1 and 2 are heterogeneous isomorphisms and 1D structures.The antiferromagnetic interaction between Co(Ⅱ)/Ni(Ⅱ)ions in complexes 1 and 2 was found by variable temperature magnetic susceptibility measurement.In addition,complex 1 can be used to detect cefixime(CEF)by fluorescence quenching method,and complex 2 can be used to detect tetracycline(TET).This method had high sensitivity and good selectivity,and their detection limits were 0.86μmol·L^(-1)(CEF)and 0.49μmol·L^(-1)(TET),respectively.CCDC:2201063,1;2201064,2.

关 键 词：配位聚合物 Co(Ⅱ) Ni(Ⅱ) 磁性 荧光传感 

分 类 号：O614.812[理学—无机化学] O614.813[理学—化学]