Simple and selective determination of 6-thioguanine by using polyethylenimine (PEI) functionalized carbon dots

The synthesis of green fluorescent carbon dots for warm white LEDs

“…9 plots the size distribution histogram of CDs-b, which varies from 6 to 18 nm with average diameter of 11.9 nm, lager than that for most CDs ever reported. [37][38][39][40] Unexpectedly, the size of CDs-b outside the dialysis bag is bigger than that of CDs-s inside the dialysis, which is different from what we commonly see. As we all know, dialysis bag is designed according to the molecular weight cut-off to separate the particles with different molecular mass.…”

Synthesis of polyurethane-derived nitrogen-doped carbon dots for a high-performance fluorescence bioimaging probe

“…It was speculated that, in xed cells and living cells, NCDs-1 enter cells through diffusion and endocytosis, respectively, and uorescence almost exists in epicyte and cytoplasma. Compared with other CDs reported previously, [33][34][35][36] the present work indicated that the as-prepared NCDs derived from PU sponge can be used as a biological imaging material with low toxicity. On the one hand, this strategy serves as an eco-friendly strategy to utilize PU sponge.…”

Carbon dot composites for bioapplications: a review

“…195 Interestingly, in some of these studies it was observed that the fluorescence intensity of PEI-CDs decreased with the increase of solution pH, and thus could be used to develop pH sensors. 196 In addition to these examples, other organics–CD composites such as (N-(2-aminoethyl)-3-aminopropyl)tris-(2-ethoxy)silane-CDs (KH791-CDs), N-isopropylacrylamide-CDs (NIPAAM-CDs), the CD–RhB core–shell nanocomposite and (polyamidoamine)-PAMAM-NH 2 -CDs have also been reported. 197–200 It is also worth mentioning that the QY of NIPAAM-CDs was as high as 94%.…”