A fluorescent polyurethane foam based on rhodamine derivative as Fe(III) sensor in pure water

Abstract

Rhodamine salicylaldehyde was synthesized, and its structure was determined using Fourier transform infrared spectroscopy, 1H NMR analysis as well as electrospray ionization mass spectrometry. Then a fluorescent polyurethane foam was obtained via incorporation of the prepared rhodamine salicylaldehyde, and the fluorescence sensing behavior for Fe3+ was systematically investigated. Results showed that the fluorescent polyurethane foam produced higher fluorescence in the presence of Fe3+ in pure water, due to the coordination for Fe3+ binding leading to ring‐opened amide form. The limit of detection was calculated to be 1.64 × 10−6 mol L–1. This fluorescent polyurethane foam can also recognize Fe3+ with good selectivity. © 2021 Society of Industrial Chemistry.

Facile preparation of fluorescent non-conjugated polymer films with tunable multicolor photoluminescencevialayer-by-layer assembly

“…In recent years, a fluorimetric spectroscopic technique based on fluorescence enhancement/quenching has been considered a favourite method for detecting the concentration of metal ions. In this case, fluorescent organic dyes, 1 covalent organic framework (COF), 2 metal-organic framework (MOF), 3 conjugated polymers, 4,5 etc., all of which contain typical fluorescent conjugated units, are always used as chemical sensor materials owing to their advantages of high sensitivity, selectivity and short response time. However, their complicated synthetic route, poor photo stability and potential toxicity in biological systems are major issues of concern.…”

Synthesis of Dansyl Cyclen and Preliminary Study of Its Fluorescent Properties

“…Nonetheless, the field of chemical sensor is very broad. Tetraazamacrocycles have been the subject of many research groups to study and design to create a class of molecular receptors [2]. Successful development of molecular receptor complexes, such as 1 by Smith [3], has enabled the evolution in the synthesis of a new generation of analogous cyclen-based receptor complexes.…”