Detection of Antibiotics by Fluorescent Lanthanide Metal–Organic Frameworks Based on Trimesic Acid

ABSTRACT With the increasing pollution of antibiotics in the environment, the detection of antibiotics is of great significance, and it is crucial to develop a simple, rapid, accurate, and efficient detection method. A series of fluorescent lanthanide metal–organic frameworks (Ln‐MOFs), [Ln(BTC)(H 2 O)]·DMF ( 1‐Ln , Ln = Eu 3+ , Dy 3+ , Tb 3+ , Ho 3+ , Er 3+ , Tm 3+ , and Sm 3+ ); H 3 BTC = trimesic acid), have been synthesized based on trimesic acid through the hydrothermal method. 1‐Eu exhibited excellent fluorescence performance. The results of antibiotic detection showed that 1‐Eu displayed obvious fluorescence quenching phenomena toward the furantoin (FRT) and nitrofural (NTF), with high sensitivity and anti‐interference ability. 1‐Eu is a promising fluorescent probe for detecting nitrofuran antibiotics, which can be used for the specific identification of antibiotics and has certain application value.