Journal
ANALYST
Volume 144, Issue 6, Pages 1916-1922Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8an01895b
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Funding
- NSFC [21673121, 21876087]
- Research Fund for 111 Project [B12015]
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Antibiotics have been noted as an important class of emerging contaminants in the environment. Metal-organic frameworks (MOFs), which have been intensely investigated as a novel kind of sensing material, have been tentatively applied to the detection of antibiotics in recent years. In this work, a nanoscale MOF (In-sbdc) with a strong (quantum yield = 13%) and stable emission in water was synthesized. With its effective spectral overlap with tetracyclines, adsorption preconcentration and the usage of a masking agent, In-sbdc gave sensitive responses to a series of tetracycline antibiotics (tetracycline, chlorotetracycline and oxytetracycline) with detection limits of 0.28-0.30 mu M, but another eight tested kinds of antibiotics did not cause a remarkable change in its emission (< 10% of the response caused by an equal amount of tetracyclines). This MOF-based sensing system was successfully applied to tetracyclines detection in a series of actual water and food samples.
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