Synthesis of green fluorescent carbon quantum dots from the latex of Ficus benghalensis for the detection of tyrosine and fabrication of Schottky barrier diode. (30th June 2021)

• Record Type: Journal Article
• Authors: Yadav, Pradeep Kumar; Upadhyay, Rishibrind Kumar; Kumar, Deepak; Bano, Daraksha; Chandra, Subhash; Jit, Satyabrata; Hasan, Syed Hadi
• Is Part Of: New journal of chemistry. Volume 45:Number 28(2021)
• Page Start: 12549
• Page End: 12556
• Publication Date: 2021-06-30
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d1nj01655e
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Green fluorescent CQDs have been synthesized from the latex of ficus benghalensis and polyethyleneimine and utilized for the detection of tyrosine. Further, fabricated a Schottky barrier diode. Abstract : In this article, a facile and straightforward approach has been designed for the preparation of fluorescent green carbon quantum dots (G-CQDs) from the latex of Ficus benghalensis as the carbon source and polyethyleneimine as the nitrogen source. Various instrumental techniques such as transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infra-red spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) were employed to characterize G-CQDs. Interestingly, the as-prepared CQDs exhibited green fluorescence with a 41.2% quantum yield and showed excitation-dependent emission. The G-CQDs were applied as a fluorescent probe for the selective and sensitive detection of tyrosine (Tyr) with a detection limit of 0.13 μM. Furthermore, to explain the quenching mechanism, a fluorescence lifetime experiment was performed. In addition to this, the detection of Tyr was performed in milk samples. Based on their semiconducting properties, the synthesized G-CQDs were effectively applied to fabricate a Schottky barrier diode on an indium doped tin oxide (ITO) substrate. On the whole, this work is a novel illustration of the demanding optoelectronic device application of G-CQDs.