Green and facile synthesis of iron-doped biomass carbon dots as a dual-signal colorimetric and fluorometric probe for the detection of ascorbic acid

Abstract

Iron-doped carbon dots (Fe-CDs) were greenly synthesized via one-step hydrothermal method using eco-friendly materials milk powder and FeCl3. It was found the synthesized biomass Fe-CDs have photoluminescent properties and strong...

An overview on animal/human biomass-derived carbon dots for optical sensing and bioimaging applications

“…[189][190][191][192][193][194][195] Some recent reports also evidenced the synthesis of doped CDs using cow milk/milk powder via the HT method. [196][197][198][199][200] For example, Zhang et al 199 obtained N-CDs with a narrow size distribution (1.0-2.0 nm) and excellent QY (59.47%) using cow milk and the HT method. Another recent report also showed that HT-synthesized N,S-CDs from a mixture of milk powder and methionine (S source) showed a good QY (32.7%).…”

“…Consequently, the characteristic absorption of oxTMB (∼652 nm) was reduced with the evolution of the Fe-CDs emission (∼460 nm) for the dual-signal detection of AA with a colorimetric/ uorometric LOD as low as 8.59/5.13 mM. 196 Subsequently, a biosensor was developed based on mussel seafood-derived N-CDs for the detection of riboavin (through FRET) with an LOD as low as 6.06 nM. 188 7.1.2.2 Anion sensor.…”

A self-cascade system based on Ag nanoparticle/single-walled carbon nanotube nanocomposites as an enzyme mimic for ultrasensitive detection of l-cysteine

“…Currently, a series of nanomaterials like carbon-based nanomaterials, 17,18 metal oxide-based nanomaterials, 19–21 metal organic frameworks, 22,23 and metal-based nanomaterials 24,25 have been proven to possess unique enzyme-mimicking catalytic activities, resembling those of peroxidase, oxidase, catalase (CAT), or superoxide dismutase (SOD). Importantly, various nanomaterials can be assembled into functional cascade systems widely used in detecting diverse analytes.…”

Advances in Magnetic Carbon Dots: A Theranostics Platform for Fluorescence/Magnetic Resonance Bimodal Imaging and Therapy for Tumors

“…Among them, CDs are a kind of carbon nanoparticle with a size less than 10 nm, easily prepared, and rich in various functional groups on its surface. It has excellent properties such as good biocompatibility, low toxicity, stable photoluminescence, and a high fluorescence quantum yield (FLQY), showing great potential for applications in the field of bioimaging. , Magnetic CDs for FL/MRI bimodal imaging of tumors can be classified as gadolinium-doped carbon dots (Gd-CDs), manganese-doped carbon dots (Mn-CDs), and iron-doped carbon dots (Fe-CDs) by the type of their doping metal. − Combining the fluorescent properties of CDs with the magnetic properties of metal, they can be used as FL/MRI molecular probes for the bimodal imaging of tumors. Magnetic CDs have also shown significant value in the field of tumor therapy.…”