A water-stable 3D Zn(II) luminescent coordination polymer for highly sensitive and selective sensing of acetylacetone and Fe3+ ion.

A water-stable 3D coordination polymer (CP) [Zn(L) 0.5 (2,6-NDC)] n (1) is hydrothermally synthesized, which features a 6-connected pcu framework with the point symbol of {412.63}. The structure of 1 could keep stable during the pH of 3.0–11.0. 1 can be used as a quick-responsive luminescent probe for sensing of acetylacetone and Fe3+ ions, and can be reused at least five times. [Display omitted] • A water-stable coordination polymer was synthesized and characterized. • The structure could remain stable during the pH of 3.0–11.0. • 1 exhibits highly sensitive and selective sensing for acac and Fe3+. • The luminescence quenching mechanisms of acac and Fe3+ are discussed. A water-stable luminescent coordination polymer [Zn(L) 0.5 (2,6-NDC)] n (1) (L = 1,6-bis(1-(pyridin-4-ylmethyl)-1 H -benzo[ d ]imidazol-2-yl)hexane, 2,6-H 2 NDC = 2,6-naphthalenedicarboxylic acid) was hydrothermally synthesized and characterized. 1 possesses a 3D framework with 6-connected pcu topology. The structure of 1 could remain stable during the pH of 3.0–11.0. 1 can be utilized as a quick-responsive luminescent probe for sensing of acetylacetone (acac) and Fe3+ ions. The limit of detection is 5.29 μM for acac, and 0.82 μM for Fe3+, respectively. [ABSTRACT FROM AUTHOR]