Microwave-assisted synthesis of fluorescent carbon quantum dots from an A₂/B₃ monomer set

Abstract

Strongly fluorescent carbon quantum dots (CQDs) were simply prepared by microwave-assisted synthesis using succinic acid and tris(2-aminoethyl)amine as an “A2 + B3” monomer set with a high mass yield of 17.3%.

Microwave-Assisted Synthesis and Characterization of Poly(L-lysine)-Based Polymer/Carbon Quantum Dot Nanomaterials for Biomedical Purposes

“…Thanks to the presence of hetermoatoms such as nitrogen, it may be assumed that the obtained nanomaterials will be characterized by very good luminescence properties [27]. The presence of hydrophilic functional groups, such as NH 2 and COOH, is responsible for excellent water solubility comparing to traditional fluorescent organic dyes [4,21,22,23,24,25].…”

“…The use of fluorescent microscope may lead to the formation of the reactive oxygen species (ROS) which leads to cells apoptosis. Therefore, the antioxidant activity of the fluorescent dye used is a desired feature [21,22,23,24,25,26,27,28].…”

Embedding Carbon Dots in Superabsorbent Polymers for Additive Manufacturing

“…Synthetic methods can be categorized as “top-down” and “bottom-up” approaches [9]. Based on the selection of synthetic approaches, the starting materials and reaction conditions vary significantly [10,11]. Photoluminescence (PL), an important optical property of CDs, has often been used to characterize the formation of CDs after synthetic reactions.…”

Role of alkan-1-ol solvents in the synthesis of yellow luminescent carbon quantum dots (CQDs): van der Waals force-caused aggregation and agglomeration

“…Ind. Ltd. Dimethyl sulfoxide (DMSO-d 6 ) and D 2 O solvents for 1 H NMR and 13 CNMR analyses were purchased from Kanto Chemical Co., Inc. and Fujilm-Wako Pure Chem. Ind.…”

“…Carbon quantum dots (CQDs), which are photoluminescent carbon nanoparticles with sizes below 10 nm have raised much expectation for industrial applications such as bio-imaging, 1,2 heavy-metal ion detection, [2][3][4] and carbon Q-LED lighting sources [5][6][7][8][9][10] due to advantageous features such as their ecofriendliness and multi-functionality. 11 Since the discovery of CQDs in 2004, 12 various bottom-up synthetic protocols have been reported (e.g., carbonization, 13,14 ultrasonication, [15][16][17] solvothermal treatment, 3,[5][6][7]9,10,18,19 and microwave chemistry 8,20,21 ) from various carbon precursors (e.g., juice, 9,22 fruit peel, 23 vegetables, 9,24 paper, 20 organic acids and bases, [6][7][8]15,18,20,[25][26][27][28] and, not least, aromatic compounds 5,…”