Nitrogen-doped carbon quantum dots fabricated from cellulolytic enzyme lignin and its application to the determination of cytochrome c and trypsin

Lignocellulosic Biomass‐Based Carbon Dots: Synthesis Processes, Properties, and Applications

“…[ 23,37,74,187 ] Theoretically, the main driving force for CDs’ electron transferring is the energy gap between the LUMO of donors and acceptors, and the CDs’ fluorescence quenching is more likely to occur with the stronger electron absorption ability of acceptors. [ 147,156 ] In Fe 3+ ‐induced fluorescence quenching (Figure 9c), the part of electrons or charges in excited LC‐CDs is induced to pass on the unsaturated Fe 3+ 3d electron orbitals, leading to an ineffective nonradiative transition that causes the fluorescence quenching. After that, the chelation between LC‐CDs and Fe 3+ can be reduced through introducing a reducing agent because of the reduced Fe 3+ valence, and the fluorescence intensity of LC‐CDs will gradually recover.…”

“…g-j) AFM images of LC-CDs. (g) is reproduced with the permission [156]. Copyright 2021, Springer-Verlag GmbH Germany.…”

γ-Valerolactone/H2O Binary Solvent for One-Pot Preparation and Functional Tailoring of Lignin-Based Carbon Dots

“…Meanwhile, it provides a route for high-value utilization of lignin. Recently, the research studies of LCDs have been rapidly developed, and amounts of related synthesis methods have been reported. − …”

Luminescent gold nanoclusters as a signal reporter for cytochrome c assay with a double signal amplification strategy

“…Great efforts have been made to develop different methods to determine Cyt c in human serum [8][9][10][11] with considerable attention on fluorescence techniques with new emerging luminescence nanomaterials. [12][13][14][15] For example, Yin et al developed a turn-off fluorescence method for Cyt c via electrostatic induction aggregation and static quenching on nitrogen-doped carbon quantum dots (N-CQDs). [12] Salehnia et al reported an aptamer-based fluorometric assay for cytochrome c by restoring the fluorescence of graphitic carbon nitride nanosheets.…”

“…[12][13][14][15] For example, Yin et al developed a turn-off fluorescence method for Cyt c via electrostatic induction aggregation and static quenching on nitrogen-doped carbon quantum dots (N-CQDs). [12] Salehnia et al reported an aptamer-based fluorometric assay for cytochrome c by restoring the fluorescence of graphitic carbon nitride nanosheets. [13] Metal nanoclusters (NCs) are a new class of luminescent nanomaterials composed of several to tens of metal atoms.…”