Cu(i)-Doped carbon quantum dots with zigzag edge structures for highly efficient catalysis of azide–alkyne cycloadditions

Abstract

Cu(i)-CQDs with zigzag-shaped edges were prepared and used for a highly efficient catalysis of the Huisgen 1,3-dipolar cycloaddition that was made possible owing to their rapid release of Cu(i).

Label‐Free Fluorometric Detection of Adulterant Malachite Green Using Carbon Dots Derived from the Medicinal Plant Source Ocimum tenuiflorum

“…Some groups have shown the role of solvent effect in affecting PL properties like the excitation‐dependent PL behaviour which has also been shown to depend on the surface state of the particular carbon dot ,, . Another reason shown to affect the origin of PL was the difference in the size of the formed carbon quantum dots ,. Different emissive states have also been shown to be the reason for such fluorescence characteristics …”

Facile and large-scale synthesis of green-emitting carbon nanodots from aspartame and the applications for ferric ions sensing and cell imaging

“…Unlike organic dye and semiconductor quantum dots, CDs usually own unique excitation-dependent fluorescence (FL) and break through the limitation of toxic heavy metal element during their formaiton. Thus, CDs show encouraging performance in the in vitro and in vivo bioimaging [4,5], chemical sensors and biosensor [6][7][8], fluorescent ink [9], light emitting diodes [10], drug delivery [11], medical diagnosis [12], catalysis [13] and so on.…”

Parameters affecting the synthesis of carbon dots for quantitation of copper ions

“…Photoluminescent nanomaterials such as carbon dots (C dots), quantum dots, nanoclusters, and gold nanodots have become interesting optical sensing materials for detecting various analytes. [1][2][3][4][5] Among them, C dots are more biocompatible and stable against salt and photoirradiation induced photoluminescence (PL) quenching. Most C dots possess interesting excitation dependent PL properties; their emission undergoes a red shi upon increasing the excitation wavelength.…”

“…7 The interesting PL properties of C dots are related to their core size, surface defects and ligands, oxidation state, and the number of conjugated p electrons. 1,[8][9][10][11][12][13][14] Many approaches, including laser ablation, ultrasonication, direct heating, microwave-assisted heating, plasma treatment, hydrothermal routes, have been applied for the preparation of C dots from different precursors. [15][16][17][18][19][20][21] Among them, the hydrothermal approach is the most popular, mainly because of its simplicity.…”