Carbon dots based on natural resources: Synthesis and applications in sensors

Yeast powder derived carbon quantum dots for dopamine detection and living cell imaging

“…Significantly, on the concept of green chemistry, it has become an active area of research to develop a simple, low-consumption and mild synthetic method for preparing fluorescent CDs derived from easily available, inexpensive and eco-friendly natural resources such as the green carbon precursors. 29–32…”

“…Signicantly, on the concept of green chemistry, it has become an active area of research to develop a simple, low-consumption and mild synthetic method for preparing uorescent CDs derived from easily available, inexpensive and eco-friendly natural resources such as the green carbon precursors. [29][30][31][32] CDs with outstanding properties designed as fresh raw materials were involved, in which the compositions and structures of the products vary inevitably, and further enhance their spectral properties thanks to the altered electronic structure of CD-based composites. The instant yeast powder as a biological product produced by high-tech biotechnology, is an ideal nutrient source, containing abundant proteins, essential amino acids, and dietary ber.…”

Recent Advances in Carbon Dots for In Vitro/Vivo Fluorescent Bioimaging: A Mini-Review

“…Since carbon dots (CDs) were synthesized in 2004 ( Xu et al, 2004 ), they have received extensive attention in various fields as a new type of fluorescent probe. Because of their multicolor luminescence ( Kailasa et al, 2019 ; Jiao et al, 2020 ; Ghosh et al, 2021a ; Ghosh et al, 2021b ), tunable optical properties ( Wang et al, 2020a ), superior chemical and photostability ( Wang et al, 2020b ; Rao et al, 2020 ), low cytotoxicity and excellent biocompatibility ( Huang et al, 2020 ; Kuang et al, 2020 ; Lin et al, 2021a ; Lin et al, 2021b ; Mei et al, 2022 ), CDs are promising candidates bioimaging. Due to the easy functionalization and good biocompatibility of the surface of CDs, they can also be used as an effective tool for visual monitoring of biological processes ( Sun et al, 2021 ; Vedhanayagam et al, 2021 ; Huang et al, 2022 ).…”

Electrochemical Biosensing Interface Based on Carbon Dots-Fe3O4 Nanomaterial for the Determination of Escherichia coli O157:H7

“…Therefore, it is important to prepare an easy-to-obtain, economical, and environmentally friendly functional material for the construction of electrochemical sensors for detecting E. coli O157:H7. As a member of "zero-dimensional" carbon nanomaterials, carbon dots (CDs) have some advantages of good biocompatibility, simple synthesis, and excellent conductivity (Zhang et al, 2019;Huang et al, 2020;Zhang and Du, 2020;He H. et al, 2021;Lin et al, 2021;Xu and Liu, 2021), and they have been successfully used to construct new electrochemical sensors, such as Pd-Au@CDs nanocomposite that we prepared for the preparation of the novel electrochemical DNA biosensor (Huang et al, 2017). Liu et al designed an electrochemical sensor for measuring catechol based on F, N-doped CDs (Liu et al, 2019).…”