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In this study, we have developed a novel ratiometric fluorescence probe (HL) which contains rhodamine and quinoline moiety. In the absence of Fe3+, the sensor displays fluorescence emission at 425nm, in the presence of Fe3+, the sensor shows a large fluorescence enhancement at 550nm in methanol. More importantly, the reversibility of the recognition process of HL is performed by adding a Fe3+ bonding...
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