Multi-excitation and single color emission carbon dots doped with silicon and nitrogen: Synthesis, emission mechanism, Fe3+ probe and cell imaging

Multiring-induced multicolour emission: hyperbranched polysiloxane with silicon bridge for data encryption

“…For P2: 1 H NMR (400 MHz, CDCl 3 ) d 6.05 (s, 1H), 4.05 (t, 4H), 3.76 (m, 16H), 3.64 (m, 4H), 1.88 (s, 4H), 1.77-1.64 (m, 9H), 1.17 (m, 26H), 0.66-0.57 (m, 4H). 13…”

“…11,12 Therefore, they exhibit promising applications in fluorescent probes, cell imaging, biomedicine and so on. [13][14][15][16] Normally, the luminescence of nonconventional macromolecular luminogens is explained in terms of the clustering-triggered emission mechanism, 17 which suggests that the luminescence of nonconventional macromolecular luminogens with p and lone-paired (n) electrons can be attributed to the electron cloud overlap and simultaneous conformation rigidification in their aggregated state. Based on this theory, a series of new luminescent materials such as polycarbonate 18 or PAE 19 have been reported.…”

Spectroscopic studies of the optical properties of carbon dots: recent advances and future prospects

“…53 (Reprinted with permission from the Royal Society of Chemistry, Copyright 2019.) (h) 13 C NMR spectra of CDs synthesized through ''polymerization'' and ''carbonization'' from ascorbic acid. 54 (Reprinted with permission from the Royal Society of Chemistry, Copyright 2012.)…”

“…Carbon family materials are mainly composed of fullerenes, 1,2 carbon nanotubes, [3][4][5] diamonds, [6][7][8] graphene, 9,10 graphdiyne 11,12 and carbon dots (CDs). [13][14][15] Among these carbon materials, CDs show the smallest size and superior hydrophilic properties, and exhibit promising applications in catalysis, drug delivery, bio-imaging, bio-sensing and energy devices. CDs were firstly discovered in 2004 by Scrivens and co-workers from a crude suspension during the separation and purification of single-walled carbon nanotubes using a gel electrophoresis method.…”

Nonconjugated Biocompatible Macromolecular Luminogens for Sensing and Removals of Fe(III) and Cu(II): DFT Studies on Selective Coordination(s) and On‐Off Sensing

“…[37,38] Recently, few fluorescent polymeric probes have been reported as Cu(II) and Fe(III) sensors. [39][40][41][42][43][44][45] For instance, in coumarin-based fluorogenic probe, the coumarin group and 2-amino-2-(hydroxymethyl)propane-1,3-diol are suitable as the fluorescent signaling and recognition sites of Fe(III), respectively, where the fluorescence quenches by the electron transfer from 2-amino-2-(hydroxymethyl)propane-1,3-diol to Fe(III). [39] The ratiometric fluorescent electrospun nanofibers have been developed by the blending of spirolactam rhodamine derivative (SRhBOH) and poly(nitrobenzoxadiazolyl derivative-co-N-(methylol)acrylamide-co-2-hydroxyethyl methacrylate) for the selective biding of SRhBOH with Fe(III) in acidic medium.…”