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Luminescent coordination polymers constructed using a mixed-ligand strategy for highly selective luminescence sensing of nitrobenzene, Fe3+ and Cr2O72− ions and photodegradation of rhodamine B

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Abstract

Using a mixed ligand strategy, ten new luminescent coordination polymers (LCPs), namely, [Cd(IPA-NH2)(Htpim)]n (1), [Mn(IPA-NH2)(Htpim)]n (2), [Zn(IPA-OH)(Htpim)]n (3), [Cd(IPA-OH)(Htpim)]n (4), {[Zn(Htpim)2(H2O)2](IPA-OH)}n (5), {[Cd(Htpim)2(H2O)2](IPA-OH)}n (6), [Cd(IPA-NO2)(Htpim)]n (7), [Zn2(PMA)(Htpim)2]n (8), [Cd2(PMA)(Htpim)2]n (9) and [Cu(H2PMA)(Htpim)2(H2O)]n (10) (Htpim = 2,4,5-tri(4-pyridyl)-imidazole, H2IPA-NH2 = 5-aminoisophthalic acid, H2IPA-OH = 5-hydroxyisophthalic acid, H2IPA-NO2 = 5-nitroisophthalic acid, H4PMA = 1,2,4,5-benzenetetracarboxylic acid) were constructed. Compounds 1–4 and 7–9 have similar 2D 44 networks, while 5, 6 and 10 show 1D chain structures. The results reveal that the coordination configuration of M(II), carboxylic acids, and coordinated water molecules play pivotal roles in the formation of the final structures. Moreover, the selective luminescence sensing and photocatalytic performances of 1–10 were also studied. Interestingly, they can sensitively detect trace amounts of nitrobenzene (NB), Cr2O72− or Fe3+ through luminescence quenching. In addition, 3–10 show high photocatalytic activities toward the degradation of rhodamine B (RhB).

Graphical abstract: Luminescent coordination polymers constructed using a mixed-ligand strategy for highly selective luminescence sensing of nitrobenzene, Fe3+ and Cr2O72− ions and photodegradation of rhodamine B

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Supplementary files

Article information


Submitted
07 May 2020
Accepted
15 Jun 2020
First published
15 Jun 2020

CrystEngComm, 2020, Advance Article
Article type
Paper

Luminescent coordination polymers constructed using a mixed-ligand strategy for highly selective luminescence sensing of nitrobenzene, Fe3+ and Cr2O72− ions and photodegradation of rhodamine B

J. Wang, F. Wu, N. Su, P. Li, S. Wang, H. Ma, Y. Li and M. Yu, CrystEngComm, 2020, Advance Article , DOI: 10.1039/D0CE00677G

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