A Zinc Coordination Polymer Sensor for Selective and Sensitive Detection of Doxycycline Based on Fluorescence Enhancement

作者：Ahui Sun, Yonghang Yang, Yanfeng Liu, Lu Ding, Pan Duan, Weiting Yang, Qinhe Pan · 发表于：Crystal Growth & Design · 年份：2021 · DOI：10.1021/acs.cgd.1c00406 · 被引用次数：61 · 研究领域：Metal-Organic Frameworks: Synthesis and Applications、Molecular Sensors and Ion Detection、Luminescence and Fluorescent Materials

In this work, a novel coordination polymer HNU-55 has been synthesized by the reaction of Zn(II) ion with the organic ligand 3-pyridinesulfonic acid (PSA) under solvothermal condition, which can be used as a fluorescent sensor for the detection of doxycycline (DOX). The fluorescent performance is effective in a wide linear range from 0 to 30 μM of DOX with a low detection limit of 3.7 nM. Likewise, the fluorescent sensor presents good selectivity, anti-interference, and circularity. Additionally, the HNU-55 sensor can be successfully used to assay the content of DOX in pig feed. Furthermore, the mechanism of fluorescence enhancement has been discussed in detail, which provides a clear understanding for the antibiotic detection based on the fluorescence enhancement.