A novel highly selective FRET sensor for Fe(III) and DFT mechanistic evaluation
Issued Date
2023-02-05
Resource Type
ISSN
13861425
Scopus ID
2-s2.0-85140486390
Pubmed ID
36323091
Journal Title
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume
286
Rights Holder(s)
SCOPUS
Bibliographic Citation
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy Vol.286 (2023)
Suggested Citation
Chantarasunthon K., Promkatkaew M., Waranwongcharoen P., Sueksachat A., Prasop N., Norasi T., Sonsiri N., Sansern S., Chomngam S., Wechakorn K., Thana C., Sakulsaknimitr W., Kongsaeree P., Srisuratsiri P. A novel highly selective FRET sensor for Fe(III) and DFT mechanistic evaluation. Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy Vol.286 (2023). doi:10.1016/j.saa.2022.122031 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/81748
Title
A novel highly selective FRET sensor for Fe(III) and DFT mechanistic evaluation
Other Contributor(s)
Abstract
A novel FRET-based sensor has been designed and developed through the conjugation of naphthyl and rhodamine via propylamine spacer, Naph-Rh. The naphthyl moiety serves as a FRET donor due to its emission spectrum overlapping with the rhodamine B absorption band. Naph-Rh exhibited a selectivity for sensing Fe3+ over other metal ions with a visual color change and fluorescent enhancement. The ratio of the Naph-Rh and Fe3+ was determined to be 1:1 based on Job's plot analysis with a detection limit of 83 nM. The probe exhibited a linear response to Fe3+ in the range of 0–120 μM. Furthermore, the density functional theory (DFT) calculations of Naph-Rh were carried out to rationalize the design and portray the plausible Fe3+ sensing mechanism.