Rational design and synthesis of a stable pillar-layer NaI-organic framework as a multi-responsive luminescent sensor in aqueous solutions

A stable pillar-layer Na-I-organic framework, [Na-2(DCPB)center dot(H2O)(2)]n (namely 1), was rationally designed and synthesized by the assemble process of Na-I and 1,3-di(4'-carboxyl-phenyl)benzene (H2DCPB). Benefiting from the luminescent property and high stability in water, the as-synthesized 1 is a potential multi-responsive luminescent sensor material toward Cr2O72-, Fe3+, and nitrofurazone (NFZ) in water. Ground 1 not only has the excellent detectability and selectivity but also possesses outstanding stability and circularity. The calculated Ks,, values of 1 are 8.8x10(3) for Fe3+, 9.9x10(3) for Cr(2)O(7)2(-) , and 2.7x10(4) M-1 for NFZ in aqueous solutions, respectively. Furthermore, 1 is able to accurately detect NFZ in real bovine serum samples through luminescence detection technology. (C) 2020 Elsevier B.V. All rights reserved.