Two luminescent Ni(II) coordination polymers for sensing of iron(III) ions/benzaldehyde and photocatalytic degradation of methylene blue under UV irradiation

Two nickel(II) coordination polymers (CPs), [Ni(5-NIP)(L)(H2O)](n) (1) and [Ni(1,4-PDA)(L)(H2O)](n) (2) (L = 1,3-bis(5,6-dimethylbenzimidazol-1-yl)propane, 5-H-2NIP = 5-nitroisophthalic acid, 1,4-H-2PDA = 1,4-phenylenediacetic acid) were hydrothermally synthesized and structurally characterized. 1 displays a 1D zigzag chain alone the a-axis. 2 shows a 3,5-connected 3,5L27 framework with a point symbol of {3.4.5}{3(2).4(2).5.6(3).7(2)}. Two compounds exhibit remarkable photocatalytic activities for degradation of the methylene blue under UV irradiation. 1 and 2 can serve as the dual-responsive luminescent chemosensors for the selective detection of benzaldehyde and Fe3+ in aqueous systems. (C) 2020 Elsevier B.V. All rights reserved.

Automated summary

Two nickel(II) coordination polymers were synthesized and characterized, showing remarkable photocatalytic activities for degradation of methylene blue and serving as dual-responsive luminescent chemosensors for selective detection of benzaldehyde and Fe3+ in aqueous systems.