Excitation-independent yellow-fluorescent nitrogen-doped carbon nanodots for biological imaging and paper-based sensing

One-step hydrothermal synthesis and optical properties of self-quenching-resistant carbon dots towards fluorescent ink and as nanosensors for Fe3+ detection

“…45 Furthermore, the quantum yield of the obtained CDs is as high as 32.1% (excited at 360 nm and using quinine sulfate as a reference), which is higher than in many previous reports. 46,47 As we all know, the uorescence stability of CDs is a key factor in its application in various elds. Therefore, the PL stability of the CDs was also studied (Fig.…”

Advances in fluorescent carbon dots for biomedical applications

“…Transition, heavy and rare-earth metal ions in the human body can be related to many common diseases but also indicative of illnesses or long-term degenerative disorders [48][49][50]. Although numerous studies have been performed regarding application of CDs in biosensing, few reports manage to present a clear overview for different metals ions or to demonstrate superior sensing capabilities based on CDs.…”

“…The most common method for sensing metal ions is based on a fluorescent assay in order to evaluate the PL intensity changes in different concentration ranges [50]. Explicitly, the PL intensity of CDs exhibits good linearity in a broad concentration range of ions (linear detection region) and a low detection limit, meaning that ion concentrations of the order of 10 −7 and lower can be detected.…”

One-step synthesis of green emission carbon dots for selective and sensitive detection of nitrite ions and cellular imaging application

“…Recently, CDs-based uorescent nanoprobes have been successfully applied to the analysis of metal ions including Fe 3+ , Al 3+ , Hg 2+ and Cu 2+ . [22][23][24][25][26] As for the detection of nitrite ions using CDs-based uorescent sensors, there are a small number of studies reported. [27][28][29] Therefore, it is still a challenging task to exploring of low cost, favourable sensitive and selective sensors based on CDs for the detection of nitrite ions.…”