Optical and Biomedical Features of Green Carbon Quantum Dots

The synthesis of carbon quantum dots (CQDs) has witnessed a paradigm shift towards green methodologies, aligning with the global push for sustainable nanomaterials. This book chapter provides a comprehensive exploration of the various properties exhibited by CQDs synthesized through environmentally friendly approaches. By analyzing recent research findings, we unravel the diverse facets of these nanoscale carbonaceous materials, emphasizing optical tunability, surface functionalization, biocompatibility, and multifaceted applications. The discourse commences with an overview of the burgeoning field, contextualizing the significance of green synthesis in the realm of CQDs. Through a meticulous synthesis of relevant literature, the chapter delves into the optical properties of green-synthesized CQDs, elucidating the mechanisms behind their tunability and potential applications in sensors and imaging. The discussion extends to the surface engineering of CQDs, exploring how green synthesis techniques impact their functional groups and surface chemistry, influencing interactions in biological systems. Furthermore, we explore the biocompatibility of green-synthesized CQDs, addressing their suitability for biomedical applications. The chapter culminates in an examination of the diverse applications of these CQDs, ranging from bio-sensing to drug delivery, showcasing their versatility in various fields. This abstract encapsulates the essence of the book chapter, providing a snapshot of the in-depth analysis of green-synthesized CQDs’ properties. The exploration not only contributes to the understanding of these nanomaterials but also underscores the imperative shift towards sustainable and impactful methodologies in their synthesis.