Carbon dots derived from frankincense soot for ratiometric and colorimetric detection of lead (II)
- Title
- Carbon dots derived from frankincense soot for ratiometric and colorimetric detection of lead (II)
- Creator
- Lisa John V.; Fasila P.M.; Chaithra K.P.; Vinod T.P.
- Description
- We report a simple one-pot hydrothermal synthesis of carbon dots from frankincense soot. Carbon dots prepared from frankincense (FI-CDs) have narrow size distribution with an average size of 1.80 nm. FI-CDs emit intense blue fluorescence without additional surface functionalization or modification. A negative surface charge was observed for FI-CDs, indicating the abundance of epoxy, carboxylic acid, and hydroxyl functionalities that accounts for their stability. A theoretical investigation of the FI-CDs attached to oxygen-rich functional groups is incorporated in this study. The characteristics of FI-CDs signify arm-chair orientation, which is confirmed by comparing the indirect bandgap of FI-CDs with the bandgap obtained from Tauc plots. Also, we demonstrate that the FI-CDs are promising fluoroprobes for the ratiometric detection of Pb2+ ions (detection limit of 0.12 ?M). The addition of Pb2+ to FI-CD solution quenched the fluorescence intensity, which is observable under illumination by UV light LED chips. We demonstrate a smartphone-assisted quantification of the fluorescence intensity change providing an efficient strategy for the colorimetric sensing of Pb2+ in real-life samples. 2022 IOP Publishing Ltd.
- Source
- Nanotechnology, Vol-33, No. 49
- Date
- 2022-01-01
- Publisher
- Institute of Physics
- Subject
- carbon dots; detection of lead; frankincense soot; photoluminescence; TD-DFT; UV light LED chip
- Coverage
- Lisa John V., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, 560029, India; Fasila P.M., Department of Chemistry, Sir Syed College, Taliparamba, Kerala, Kannur, 670142, India; Chaithra K.P., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, 560029, India; Vinod T.P., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, 560029, India
- Rights
- Restricted Access
- Relation
- ISSN: 9574484; PubMed ID: 36049475; CODEN: NNOTE
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Lisa John V.; Fasila P.M.; Chaithra K.P.; Vinod T.P., “Carbon dots derived from frankincense soot for ratiometric and colorimetric detection of lead (II),” CHRIST (Deemed To Be University) Institutional Repository, accessed February 23, 2025, https://archives.christuniversity.in/items/show/14740.