Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 251, Issue -, Pages 667-673Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2017.05.063
Keywords
Lanthanide metal organic framework; Dual emission; Luminescent film; Self-calibrating sensor; Formaldehyde detection
Funding
- National Natural Science Foundation of China [51472275, 20973203, 91022012]
- Guangdong Natural Science Foundation [2014A030313207]
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A continuous and well attached thin film of Eu3+ MOF with dual-emission was directly grown on hydrolyzed polyacrylonitrile (HPAN) using layer by layer approach. The structure and morphology of the luminescent Eu-NDC@HPAN thin film was investigated by XRD, FT-IR and SEM. The film was utilized as a self-calibrating luminescent sensor for detecting formaldehyde in aqueous solution. The emission intensity ratio (I-453/I-616) increased linearly with increasing formaldehyde content in the range from 0.05 to 1%. The sensing mechanism was also discussed. For practical purpose, the thin film has been applied to detect formaldehyde as an illegal preservative in aquatic product, This is first demonstrated that lanthanide complex luminescent film is application in self-calibrating small molecule sensors in biological systems successfully. (C) 2017 Elsevier B. V. All rights reserved.
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