Highly fluorescent carbon dots synthesized with binary dopants for “turn off” and “turn off-on” sensing and cell imaging

A facile fluorescent sensor based on nitrogen-doped carbon dots derived from Listeria monocytogenes for highly selective and visual detection of iodide and pH

“…These results indicated that the fluorescence quenching belonged to dynamic quenching process, and electron transfer process between the excited states of the NCDs-LM with Hg 2+ ions may be the main reason for fluorescence quenching. 45,46…”

Novel β-cyclodextrin doped carbon dots for host–guest recognition-assisted sensing of isoniazid and cell imaging

“…39,40 Under this reaction condition, CDs were produced through polymerization and carbonization, but the high temperature may destroy the particular functional groups on the carbon precursor to a large extent, thus resulting in a lack of specicity of CDs-based sensors. 7,41 In this work, b-CD was selected as the doping substance and directly introduced into the reaction system to prepare CDs with specic recognition site. For the sake of retaining the specic recognition structure of b-CD and enhancing the uorescence performance of CCDs, the reaction conditions, including reaction temperature, the composition of carbon sources and reaction time, were optimized respectively.…”

“…According to previous studies, high temperature may cause extreme carbonation and most specic functional groups may be destroyed. 7,8,41 In addition, we also investigated the effect of reaction temperature on the size of CCDs. The TEM images of CCDs prepared at different temperatures were taken (Fig.…”

Sustainable and Green Synthesis of Waste-Biomass-Derived Carbon Dots for Parallel and Semi-Quantitative Visual Detection of Cr(VI) and Fe3+

“…Up to now, most of the previously reported CD-based sensors (including "green" CDbased sensors) could only detect one kind of analyte such as Fe 3+ [23], Hg 2+ [24], Ag + [4], ClO − [25], S 2− [26], tetracycline [27] and 4-nitrophenol [28]. By contrast, only a few studies have reported CD-based multifunctional sensors for the multi-mode sensing of two or more types of analytes [29][30][31][32].…”