Synthesis, crystal structures, and luminescence sensing properties of two cobalt(II) complexes containing bis(thiabendazole) moieties

resumo

Two new Co(II) complexes, namely [Co-2(L1)(TBIP)center dot H2O](n)(1) and [Co-2(L2)(NPTA) H2O](n) (2) (L1 = 1,4-bis(thiabendazole-1-ylmethyl)benzene, L2 = 1,2-bis(thiabendazole-1-ylmethyl)benzene, H2TBIP = 5-tert-butylisophthalic acid, and H(2)NPTA = 2-nitroterephthalic acid), were hydrothermally synthesized and characterized. 1 shows a 1D double chain, while 2 displays a binuclear structure. 1 and 2 extend into a 2D supramolecular network via C-H center dot center dot center dot O and O-H center dot center dot center dot O hydrogen bonding interactions, respectively. 1 and 2 exhibit excellent chemical stability in a wide pH range of 3-12. Furthermore, 1 and 2 are promising di-functional sensors for the detection of Fe3+/Cr2O72- (pH = 4) and Ni2+/MnO4- (pH = 9), respectively, with high sensitivity and selectivity and a low limit of detection.

palavras-chave

AQUEOUS-PHASE DETECTION; COORDINATION POLYMERS; CR2O72; SENSOR; FE3+; FLUORESCENCE; MOFS

categoria

Chemistry, Inorganic & Nuclear

autores

Wu, YB; Yu, Q; Cui, GH; Fu, LS

nossos autores

agradecimentos

This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020, financed by national funds through the Foundation for Science and Technology/MCTES.

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