【摘要】 通过Co（hfacac）₂与配体3,6-二（吡啶-4-基）-9H-咔唑（L¹）和9-甲基-3,6-二（吡啶-4-基）-9H-咔唑（L²）分别配位，合成了配合物[Co（hfacac）₂（L¹）]_n（1）和[Co（hfacac）（L²）]_n（2）（Hhfacac=六氟乙酰基丙酮）。用红外光谱、紫外可见吸收光谱、电喷雾电离质谱和单晶X射线衍射分别对配合物1和2进行了表征。单晶X射线衍射分析表明，2结晶于三斜晶系P1的空间群，晶胞体积为1.928 7（2） nm³,Co中心呈现出扭曲的八面体配位。2具有以氢键和π-π堆积相互作用稳定的一维链状结构。荧光研究表明，配合物1加入Al³⁺后产生显著的荧光增强响应，螯合增强荧光（CHEF）机制使得1对Al³⁺的检测具有高选择性，检测限为51.3nmol·L^-1。此外，开发的荧光试纸条可用于现场快速检测。更多还原

【Abstract】 Complexes [Co（hfacac）₂（L¹）]_n（1） and [Co（hfacac）（L²）]_n（2）（Hhfacac=hexafluoroacetylacetonate） were synthesized by coordinating Co（hfacac）₂ with ligands 3,6-di（pyridin-4-yl）-9H-carbazole（L¹） and 9-methyl-3,6-di（pyridin-4-yl）-9H-carbazole（L²）, respectively. The complexes were characterized by infrared spectrometry, UV-Vis spectrometry, electrospray ionization mass spectrometry, and single-crystal X-ray diffraction. Single-crystal X-ray diffraction analysis revealed that complex 2 crystallizes in a triclinic crystal system with the space group P1, and the unit cell volume is 1.928 7（2） nm³. The Co（Ⅱ） centers exhibit distorted octahedral coordination. One-dimensional chain structures of 2 are stabilized by hydrogen bonding and π-π stacking interactions. Fluorescence studies showed that complex1 could be highly selective in Al³⁺detection with a limit of detection of 51.3 nmol·L^-1and had a significant turn-on response to Al³⁺, which is attributed to the chelation-enhanced fluorescence（CHEF） mechanism. Furthermore, fluorescent test strips were developed for rapid in situ detection of Al³⁺. CCDC: 2463732,2.更多还原