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Highly selective and sensitive long fluorescence lifetime polyurethane foam sensor based on Tb-complex as chromophore for the detection of HPO in water.

08:00 EDT 23rd March 2019 | BioPortfolio

Summary of "Highly selective and sensitive long fluorescence lifetime polyurethane foam sensor based on Tb-complex as chromophore for the detection of HPO in water."

Developing novel rare-earth complexes to rapidly and reliably sensing anions in pure water is highly challenging. Here, a series of long fluorescence lifetime polyurethane foam bonded Tb(BAA) chromophore porous material (Tb-PUFs) have been designed and synthesized via a simple one-step co-polycondensation reaction as an efficient fluorescent sensor for HPO in pure water. All Tb-PUFs exhibited strong green emission and long fluorescence lifetime in water, which was ascribed to Tb-complex can be dispersed very well in polyurethane foam, effectively avoiding the emission quenching of Tb ions caused by water molecules vibration. The titration experimental results showed that precursor Tb(BAA) can effective recognize F, CHCOO, and HPO in DMSO solution. Interestingly, Tb-PUFs can only selectively recognize HPO in pure water, this phenomenon can be explained that HPO is acidic, and can occur deprotonation with -NH group of ligand BAA, thus making the fluorescence quenching effect was more sensitive for HPO in pure water. In addition, the sensing ability of Tb-PUFs for HPO is highly reversible by washing them with deionized water for three times. In a word, all results implied that Tb-PUFs was an excellent candidate for HPO ions detection selectively in pure water.

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This article was published in the following journal.

Name: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
ISSN: 1873-3557
Pages: 86-92

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