abstract
Two new ternary Cd(II) coordination polymers (CPs), namely, [Cd(DCTP)0.5(L)2(SO4)0.5]n (1) and [Cd(DCTP) (L)]n (2) (L = 2-(4-thiazolyl)-1H-benzimidazole; H2DCTP = 2,5-dichloroterephthalic acid), were successfully synthesized using the solvothermal method. 1 displays a 1D zigzag infinite chain, which can be further extended into the 2D network via classic hydrogen bonding interactions in a triclinic system (unit cell parameter: a = 9.251 (2) angstrom, b =11.194(3) angstrom, c =12.865(3) angstrom. alpha = 105.362(2)degrees, beta = 97.871(2)degrees, gamma = 98.229(2)degrees). 2 is a (3,4)-connected 2D layer that is subsequently expanded into a 3D supramolecular framework through E & sdot;& sdot;& sdot;E stacking interactions in a triclinic system (a = 9.161(3) angstrom, b = 9.225(4) angstrom, c = 12.575(4) angstrom. alpha = 89.554(3)degrees, beta = 69.446(3)degrees, gamma = 68.858(4)degrees). Both CPs demonstrate exceptional stability in the wide pH range of 3-12. Furthermore, 1 and 2 can act as exceptional luminescent probes for the sensing of norfloxacin with low limits of detection (2.03 x 10-9 mol/L for 1 and 4.88 x 10-8 mol/L for 2) and remarkable anti-interference abilities. Moreover, the mechanisms of the luminescence quenching of CPs are investigated.
keywords
METAL-ORGANIC FRAMEWORKS; SENSOR; ACID; ACETYLACETONE; OPTIMIZATION; ANTIBIOTICS; LINKERS
subject category
Chemistry
authors
Gao, ZH; Deng, XC; Cui, GH; Fu, LS
our authors
Lianshe Fu
Junior ResearcherProjects
Nano-argilas para remoção/captura de fosfatos (P) e sua reutilização como fertilizante (NATURAL)
CICECO - Aveiro Institute of Materials (UIDB/50011/2020)
CICECO - Aveiro Institute of Materials (UIDP/50011/2020)
Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)
acknowledgements
The project is supported by Hebei Natural Science Foundation (B2021209020) . This work was also developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020, UIDP/50011/2020 & LA/P/0006/2020, financed by National funds through the FCT/MEC (PIDDAC) .