Publication Type : Journal Article
Publisher : IET Nanobiotechnology
Source : IET Nanobiotechnology, 12(2), 127-132
Campus : Bengaluru
School : School of Engineering
Center : Amrita Innovation & Research
Department : Chemistry
Verified : Yes
Year : 2017
Abstract : Luminescent carbon-based nanomaterials hold great promise due to their stable photo-physical behaviour, biocompatibility and lower toxicity. This work involves economic and facile one-pot green synthesis of water-soluble nanostructures from lemon grass (LGNS) [Cymbopogon citratus (DC) Stapf] as carbon source. High-resolution transmission electron microscopy confirmed the formation of LGNS with lattice spacing of 0.23 nm matching low-dimensional graphitic structures. The strong absorption exhibited at 278 nm could be attributed to л-states of sp 2 /sp 3 hybridisation in carbon nanostructures. Fluorescence spectroscopy of LGNS exhibited strong excitation-dependent emission properties over a broad range of wavelengths from 300 to 600 nm. Quantitatively, these LGNS were estimated to have quantum yield of 23.3%. Biomass derived LGNS could be potentially exploited for wide variety of applications like bioimaging, up-conversion, drug delivery and optoelectronic devices. To this extent, synthesised LGNS were used to image yeast cells via multicolour/multiexcitation fluorescence imaging.
Cite this Research Publication : Thota, Sai & Thota, Sai Praneeth & Srimadh Bhagavatham, Sai Krishna & Manoj, Kaja & Muthukumar, Sai & Sivaramakrishnan, Venketesh & Vadlani, Praveen & Belliraj, Siva Kumar. (2017). Facile one-pot hydrothermal synthesis of stable and biocompatible fluorescent carbon dots from lemon grass herb. IET Nanobiotechnology. 12. 10.1049/iet-nbt.2017.0038.