Barium-based coordination polymer: A bi-functional fluorescent sensor for Fe3+ and nitroaromatic molecular detection

Abstract

It is important to develop a simple and multi-response fluorescence sensor for practical applications. Coordination polymer materials are widely used in fluorescence sensor design due to their excellent photoluminescence properties. Herein, a new 2D coordination polymer [Ba(Nyaia)(H2O)]n 1 (H2Nyaia = 5-[(naphthalene-1-methylene)amino]-isophthalic acid) with good thermal stability was prepared through H2Nyaia and barium(II) nitrate under the solvothermal method. Compound 1 as a bi-functional fluorescent sensor has highly sensitive fluorescence quenching for detecting Fe3+ with the quenching constant (Ksv) value of 6.57 × 105 M−1 and 4-nitrophenol (4-NP) with the Ksv value of 4.44 × 105 M−1.