title: A Cd(II)-based metal-organic framework as a luminance sensor to nitrobenzene and Tb(III) ion.
abstract: A Cd(II)-based metal-organic framework, [Cd2(DPDC)2(BTB)]∞ (Cd-MOF, DPDC = 2,2'-diphenyldicarboxylate and BTB = 1,4-bis(1,2,4-triazol-1-yl)butane) was successfully constructed via a hydrothermal reaction. Structural analysis shows that the synthesized Cd-MOF is a three-dimensional (3D) architecture crystallized in the hexagonal system with a chiral space group P61. Powder X-ray diffraction experiments and thermogravimetric analysis reveal that the constructed Cd-MOF has a high chemical and thermal stability. A study of additional mechanical properties indicates that it exhibits a moderate stiffness with the average values of Young's modulus (E) and H as 11.3(2) and 0.9(7) GPa, respectively. The luminescence properties of the Cd-MOF were further studied. The result shows that it could be an effective sensor to the organic nitrobenzene molecule via a strong quenching effect, and also to the inorganic Tb(III) ion by a strong green emission effect. Moreover, when loading bimetal ions (Eu(III) and Tb(III) into the Cd-MOF/methanol suspension, tunable visible luminescence can also be achieved by carefully adjusting the excitation wavelengths.
authors.affiliation: Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing, 100048, China. xiali@cnu.edu.cn.
authors.forename: Xiang-Long
authors.initials: XL
authors.lastname: Qu
authors.affiliation: School of Physics, Huazhong University of Science and Technology, Wuhan, 430074, China.
authors.forename: Di
authors.initials: D
authors.lastname: Gui
authors.affiliation: Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing, 100048, China. xiali@cnu.edu.cn.
authors.forename: Xiao-Li
authors.initials: XL
authors.lastname: Zheng
authors.affiliation: Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing, 100048, China. xiali@cnu.edu.cn.
authors.forename: Rui
authors.initials: R
authors.lastname: Li
authors.affiliation: Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing, 100048, China. xiali@cnu.edu.cn.
authors.forename: Hong-Liang
authors.initials: HL
authors.lastname: Han
authors.affiliation: Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing, 100048, China. xiali@cnu.edu.cn.
authors.forename: Xia
authors.initials: X
authors.lastname: Li
authors.affiliation: Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore. pzli@ntu.edu.sg.
authors.forename: Pei-Zhou
authors.initials: PZ
authors.lastname: Li