Journal
OPTICAL MATERIALS
Volume 133, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.optmat.2022.112767
Keywords
Fe3+; Rhodamine; Fluorescence; Colorimetry; Sensor; ROAP
Categories
Funding
- Natural Science Foundation of Shanghai [19ZR1437900]
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A novel phosphorus fluorescent sensor ROAP based on Rhodamine moiety is designed and synthesized for the detection of Fe3+ in solution. The ROAP sensor shows high sensibility, selectivity, and anti-interference for Fe3+ and exhibits good reversibility.
Based on Rhodamine moiety, a novel phosphorus fluorescent sensor as 2-(6-(diethylamino)-2-((diphenylphos-phoryl) methyl)-3-oxo-3-3H-xanthen-9-yl) benzoic acid (ROAP) is firstly designed and synthesized for the detection of Fe3+ in solution. The recognition effect of ROAP sensor is investigated carefully in dimethyl sulfoxide-water (DMSO-H2O) (f(w) = 70%) dispersion system. Fe3+ ion can lead to the quenching fluorescence and fading color of ROAP sensor. The as-prepared ROAP sensor shows high sensibility, selectivity, and anti-interference for Fe3+ in the concentration range of 0-5 equivalents. The recognition mechanism of the sensor is attributed to the combination of Fe3+ ions with the ROAP sensor via O atoms of P = O and OH groups. The stoichiometric ratio of ROAP and Fe3+ complexation is 2:1. The probe also exhibits good reversibility, and high potential commercial applications in the future.
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