Abstract
A sandwich-like 2D infinite framework of {[Cd(pbbm)2(SO3FcSO3)]·(CH3OH)2·(H2O)6} n (1) with nanosized porous structure [Fc(SO3)2Na2 = ferrocene-1,1′-disulphonate, pbbm = 1,1′-(1,3-propylene)-bis-1H-benzimidazole] was prepared by combining d 10 Cd2+ ions with highly conjugated pbbm and disodium ferrocene-1,1′-disulfonate. Experimental results show that 1 could serve as a new fluorescent probe for the detection of many divalent metal ions in water, such as Mn2+, Fe2+, Fe3+, Co2+, Ni2+, Cu2+, Zn2+, Ag+, Cd2+, Hg2+ and Pb2+, and trace organic solvents, including acetone, toluene, methylene chloride, ether, tetrahydrofuran, and methanol. The main product was very different from previous chemosensory materials that only identify one or two metal ions. The powdery multipurpose chemosensory materials proposed here could also sequester dangerous heavy metal ions, especially Pb2+. A computational study of ferrocene-1,1′-disulfonate and 1 gave insight into the process of ion exchange and sorption. This study introduces a promising new field of fluorescent chemosensors based on nanoporous coordination polymers with free functional groups.
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Notes
Crystal data for 1, Mr = 1009.21, triclinic, Pī, a = 9.2475(9), b = 10.1596(10), c = 12.6463(12) Å, α = 74.8010(10), β = 69.4210(10), γ = 73.8500(10), Z = 1, R1 = 0.0202 (I > 2σ (I)). GOF = 1.037. CCDC number: 630122. This data can be obtained free of charge via www.ccdc.cam.ac.uk/conts/retrieving.html (or from the Cambridge Crystallographic Data Centre, 12, Union Road, Cambridge CB21EZ, UK; fax: (44) 1223-336-033; or deposit@ccdc.cam.ac.uk).
Frisch, M. J. et al., see Supporting Information.
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Acknowledgments
We gratefully acknowledge the financial support of the National Science Foundation of China (Grant No. 20671082 & 20873126), Major Research Plan of National Natural Science Foundation of China (Grant No. 10590352), General Program of National Natural Science Foundation of China (Grant No. 10372095), and China Postdoctoral Science Foundation funded project (Grant No. 20090450932) and Henan Province (Grant No. 2010HASTIT018, 104300510038 & 2009A150025).
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Mi, L., Chen, W., Li, Z. et al. Response of Two-Dimensional Polymeric Cadmium Ferrocenyl Disulfonates to Heavy Metal Ions. J Inorg Organomet Polym 20, 847–855 (2010). https://doi.org/10.1007/s10904-010-9390-5
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DOI: https://doi.org/10.1007/s10904-010-9390-5