LIGNOCELLULOSIC MASS DERIVED CARBON QUANTUM DOTS FOR SMART PACKAGING APPLICATION

Abstract

This dissertation addresses both the extraction of nanocellulose as well as the characteristics and behaviour of carbon quantum dots (CQDs), a zero-dimensional material. The distinctive electrical and optical characteristics of CQDs, including their ability to transfer electrons and emit diverse coloured light when exposed to electromagnetic radiation. The key characteristics of carbon quantum dots (CQDs) emphasize their small size, typically below 10 nanometres, and the correlation between their size and the emitted light's wavelength, which is determined by the energy difference between their band gaps. This study explores the antimicrobial properties of a material, highlighting its potential suitability for packaging applications. These quantum dots accompanied by Cellulose Nanocrystals (CNCs) will provide a solution to the problem when we make a fluorescent film based on CNC/CQD. Tectona grandis (Teak) leaves were utilized as the primary raw material to serve as a carbon source. The leaves were subsequently subjected to Sulphur and Nitrogen doping, aiming to augment their fluorescence properties and enhance their antimicrobial efficacy. These CQDs have shown encouraging promise in the creation of assays, anti-counterfeiting, drug transporters, sensors, photocatalysis, phototherapy, and bioimaging agents, among other applications within the field of nanotechnology.