State of Art Technology: Synthesis of Carbon Dots and Their Potential Applications in Biomedical, Research and Environmental Remediation

Abstract

Cutting-edge technologies are intensifying into new skylines and this remarkable progress has been successfully influenced by the tiny level engineering of carbon dots technology, their syn-thesis advancement and impressive applications in the field of allied sciences. The advances of science and its conjugation with interdisciplinary fields emerged in carbon dots making, their controlled characterization and applications into faster, cheaper as well as more reliable prod-ucts in various scientific domains. Thus, a new era in nanotechnology has developed into carbon dots technology. The understanding of the generation process, control on making processes and selected applications of carbon dots such as energy storage, environmental monitoring, catalysis, contaminates detections and complex environmental forensics, drug delivery, drug targeting and other biomedical applications etc. are among the most promising applications of carbon dots and thus a thrust area of research today. In this regard, various types of carbon dots nano-materials such as oxides, their composites and conjugations etc. have been flocking significant attention due to their remarkable potential in this thrust area of energy, the environment and technology. Thus, the present paper highlights the role and importance of carbon dots, recent advancements in their synthesis methods, properties and emerging applications.

Theranostic applications of multifunctional carbon nanomaterials

“…77 Recently, CNMs have been effectively established as new MRI contrast agents. 78 Carbon nanotubes, due to their ultrahigh surface area, excellent mechanical strength, and rich electronic polyaromatic structure, are potential tools for diagnosis techniques such as MRI. 79 The modification of CNTs allows us to conjugate magnetic contrast agents and drugs to construct multifunctional and hybrid nanomaterials for magnetic resonance imaging (MRI).…”

Facile one‐pot synthesis of PEG‐derived carbon dots with enhanced luminescence via L‐cysteine‐assisted S,N‐doping

“…In this paper, we report the synthesis of photoluminescent carbon dots using a nontoxic biopolymer, polyethylene glycol (PEG) via the one‐step hydrothermal method. Common hydrothermal synthesis reported in the literature is usually done at higher temperatures (>200°C) and for a longer time (>12 h) [31, 44–47]. Here we presented a faster route (6 h) by introducing ultrasonication and alkalinity into the usual hydrothermal synthesis to produce photoluminescent carbon dots using PEG as the lone carbon precursor.…”