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

Abstract

A universal and robust strategy using polyurethane sponge as a precursor was developed to synthesize highly-soluble nitrogen-doped carbon quantum dots via a solvothermal method.

Photoluminescent carbon dots (PCDs) from sour apple: a biocompatible nanomaterial for preventing UHMWPE wear-particle induced osteolysis via modulating Chemerin/ChemR23 and SIRT1 signaling pathway and its bioimaging application

“…As a result, zebrafish provides a solid foundation for assessing the toxicity of tested compounds/materials [ 69 ]; [ 70 ]. The purpose of the toxicity test is to determine whether the synthesized PCDs are suitable for bioimaging applications and to see if utilising them as a bioimaging probe has any potentially harmful side effects [ 71 ]. Interestingly, the prepared PCDs did not show any significant mortality to zebrafish larvae up to 500 µg/mL concentration (Fig.…”

Nanoarchitectonics of neomycin-derived fluorescent carbon dots for selective detection of Fe3+ ions

“…The second and third peaks at 400.8 and 401.5 eV reflect the bonding structure of the N–H and C–N–C bonds. 16–23 The deconvolution of the O 1s region shows three peaks at 530.95, 531.6, and 532.6 eV (Fig. 3d).…”

“…18,27,45,46 The high-resolution XPS spectrum of N 1s shows three peaks centred at 399.5, 400.8 and 401.5 eV The second and third peaks at 400.8 and 401.5 eV reect the bonding structure of the N-H and C-N-C bonds. [16][17][18][19][20][21][22][23] The deconvolution of the O 1s region shows three peaks at 530.95, 531.6, and 532.6 eV (Fig. 3d).…”

“…Doping heteroatoms such as nitrogen and phosphorous into CDs leads to changes in their electronic properties and may create more active sites. [18][19][20][21][22][23][24][25] Thus, heteroatom doped CDs have been extensively synthesized to improve their electronic properties, quantum yield and photostability.…”

Construction of composite films using carbon nanodots for blocking ultraviolet light from the Sun

“…9 With the development of UV blocking materials, carbon nanodots (CNDs) have gradually been used to block high-energy short wavelength light due to their excellent optical absorption and conversion properties. 1,2,10,11 CNDs are a new type of carbon nanomaterial with a particle size <10 nm, excellent resistance to photobleaching and good responsiveness to changes in pH and temperature, [12][13][14][15][16] which are widely used in white light emitting diodes (WLEDs), [17][18][19][20] in anticounterfeiting applications, 21,22 as probes, [23][24][25] and catalysts, 26,27 and for biological imaging. 28,29 Among the many possible sources of carbon for preparing carbon dots, natural resources and derivatives are particularly attractive because of their abundance, low price, environmental friendliness and sustainability.…”