Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 236, Issue -, Pages 184-191Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.05.143
Keywords
Fluorescent chemosensor; Rhodamine 6G; Aluminum; Rhodamine thin film; Aqueous media
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2016901050]
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In this paper, a novel fluorescent probe based on a rhodamine 6 G derivative (RG-HN) was designed and synthesized for the recognition of Al3+. The synthesized RG-HN showed high selectivity towards Al3+ in CH3CN in the presence of other competitive metal ions. The addition of Al3+ into RG-HN led to a visible color change and an off-on fluorescence change due to the opening of the spirolactam ring. The detection limit was calculated based on 3 delta/k and found to be 2.6 x 10(-8) M. The Jobs plot and LCMS spectrum clearly suggested the formation of a 2:1 complex of RG-HN with Al3+. Further, RG-HN thin films were prepared and used as probes for the detection of Al3+ in completely aqueous media. RG-HN thin film showed a visible color change after immersing in Al3+ in water. Changes in the morphology of the RG-HN thin film upon sensing of Al3+ were studied by scanning electron microscopy. ((c)) 2016 Elsevier B.V. All rights reserved.
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