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TALANTA
Volume 265, Issue -, Pages -Publisher
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DOI: 10.1016/j.talanta.2023.124803
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Three novel Co-based coordination polymers were successfully synthesized and characterized. These compounds can serve as highly selective and sensitive fluorescent sensors for the detection of the biomarker methylmalonic acid (MMA).
Three novel Co-based coordination polymers including {[Co(L)(mu(3)-O)(1/3)](2)} n (1), {[Co(L)(bimb)]}(n) (2) and {[Co (L)(bimmb)(1/2)]}(n) (3) (H2L = 2,6-di(4-carboxylphenyl)-4-(4-(triazol-1-ylphenyl))pyridine), bimb = 1,4-bis(lmidazol) butane, bimmb = 1,4-bis(imidazole-1-ylmethyl)benzene) were successfully prepared under solvothermal conditions and characterized. Single-crystal X-ray diffraction analyses revealed that 1 possesses a 3D architecture composed of a trinuclear cluster [Co3N3(CO2)(6)(mu(3)-O)], 2 exhibits a 2D new topological framework with the point symbol (8(4).12(2))(8)(2), whereas 3 shows a unique six-fold interpenetrated 3D framework with a (6(3).8(2).10)(2)(6(3))2(8) topology. Impressively, all of them can function as a highly selective and sensitive fluorescent sensor for the biomarker methylmalonic acid (MMA) via fluorescence quenching. The low detection limit, reusability and high anti-interference performance together make 1-3 become promising sensors for the practical detection of MMA. Furthermore, the successful application of MMA detection in urine sample was demonstrated, which may be a potential candidate for the further development of clinical diagnostic tools. T
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