Abstract
Carbon nanodots (CNDs) are smaller nanoparticles with amorphous or crystalline core structure fabricated through easy synthesis procedures, and have advantage such as, bright luminescence, less cytotoxicity, biocompatibility, and tunable emission properties. Moreover, CNDs are found applications in environmental and biomedical sciences. Due to specific and sensitive nature, CNDs were used as a probe for detection of various metal ions, biomoleules, drug molecules etc. Because of the biocompatible nature, CNDs were used for bioimaging, targeted-drug delivery nano bio conjugates, platforms for cell differentiation, as well as in tissue engineering. But, as research focused towards the structural analysis, a doubt has been raised on the existence of CNDs. This review is focused on evaluating the recent trends in CNDs research, including CNDs synthesis, understanding of their PL properties, and also implications of organic impurities, and their influences on different applications of CND.
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