Abstract
We describe a new “naked eye” and fluorescent chemosensor which exhibited greater selectivity and specificity toward Cr3+ and Fe3+ ions over other tested metal ions. The newly synthesized compound, RBCB displayed a visual color change and fluorescence enhancement with Cr3+ and Fe3+ ions. Structural characterization of the title compound was carried out by FTIR, NMR and mass spectral analysis. Interaction of RBCB to Fe3+ and Cr3+ leads to spirolactum ring opening of rhodamine which inturn evokes a 56 and 25-fold fluorescence enhancement. For RBCB, the limit of detection even lower than the permissible [Cr3+] or [Fe3+] in drinking water as per WHO standard. The low RSD % and high recoveries demonstrate that RBCB can serve as a potential sensor for the accurate detection of Cr 3+ and Fe 3+ in real samples. DFT, FTIR and Mass spectral studies reveal that RBCB binds to Cr3+ and Fe3+ in a 1:1 pattern evidenced by Job's plot analysis. Furthermore, the sensor is insensitive to pH 6–10 therefore can be applied for environmental and biological samples. Moreover, titration experiments against sodium-EDTA revealed that the test compound can be used as reversible probe for Cr3+ and Fe3+ ions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
