Near-infrared emission carbon dots for bio-imaging applications

Li, Liping; Ren, Xiao-feng; Bai, Pei-rong; Liu, Yan; Xu, Wei-yue; Xie, Jun; Zhang, Ruiping

doi:10.1016/s1872-5805(21)60041-0

Cited by 28 publications

(16 citation statements)

References 42 publications

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“…Li et al 111 synthesized near-infrared emission CDs for bioimaging. The dots were synthesized via a solvothermal treatment of tetraphenyl porphyrin in sulfuric and hydrochloric acids.…”

mentioning

confidence: 99%

Biomass-Based Carbon Dots: Current Development and Future Perspectives

2021

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Carbon dots have been considered as a solution to the challenges that semiconductor quantum dots have encountered because they are more biocompatible and can be synthesized from abundant and nontoxic materials such as biomass. This review will highlight the advantages of these biomass-based carbon dots in terms of synthesis, properties, and applications in the biomedical field. Furthermore, future applications especially in the biomedical field of biomass-based carbon dots as well as the challenges of semiconductor quantum dots such as biocompatibility, photobleaching, environmental challenges, toxicity, and poor solubility will be discussed in detail. Biomass-derived quantum dots, a subsection of carbon dots that are the most desirable for future research, will be focused upon including from synthesis to applications. Finally, the future development of biomass derived quantum dots in the biomedical field will be discussed and evaluated to unlock the potential for their applications.

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“…Li et al 111 synthesized near-infrared emission CDs for bioimaging. The dots were synthesized via a solvothermal treatment of tetraphenyl porphyrin in sulfuric and hydrochloric acids.…”

mentioning

confidence: 99%

Biomass-Based Carbon Dots: Current Development and Future Perspectives

2021

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“…The fluorescence spectra of CDs revealed their ability to be excited at different excitation wavelengths and emit light across a wide color band (Figure b) from blue to yellow-green, due to their small size and multifunctional surface groups. This fluorescence property makes the CDs promising for cell labeling and bioimaging applications. − The maximum excitation and emission spectra of CDs were located at 360 and 480 nm, respectively, with a fluorescence quantum yield of 18.3% at room temperature. Under fluorescence microscopy, the CDs powder emitted bright green light when they were excited by 488 nm, as shown in the right insert of Figure b.…”

Section: Resultsmentioning

confidence: 99%

Investigation of Anticancer Therapy Using pH-Sensitive Carbon Dots-Functionalized Doxorubicin in Cubosomes

Xie,

Wang,

et al. 2024

ACS Appl. Bio Mater.

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Cancer remains a highly lethal disease due to its elusive early detection, rapid spread, and significant side effects. Nanomedicine has emerged as a promising platform for drug delivery, diagnosis, and treatment monitoring. In particular, carbon dots (CDs), a type of fluorescent nanomaterial, offer excellent fluorescence properties and the ability to carry multiple drugs simultaneously through covalent bonding. In this work, CDs with carbonyl groups on the surface were prepared by aldol condensation and reacted with amine groups in the structure of doxorubicin (DOX) through Schiff base reaction to generate pH-responsive CDs-DOX. On the other hand, cubosomes with three-dimensional lattice structures formed by lipid bilayers have advantageous capabilities of encapsulating various hydrophilic, amphiphilic, and hydrophobic substances. The pH-responsive CDs-DOX are subsequently loaded into cubosomes to form an anticancer therapeutic nanosystem,

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“…Compared with the C1s spectrum of the OHCMs, the CO and C–OH peaks in the PEI–EN–OHCM spectrum exhibit shifts resulting from crosslinking reactions between PEI and OHCMs. The S 2p spectrum obtained from SPEI–EN–OHCMs exhibits a peak related to C–S bonds at 288.7 eV 30 while S–OH and SO peaks are present in the O 1s spectrum. These data establish that the aromatic carbon sheets of OHCMs were sulfonated by the chlorosulfonic acid 31 .…”

Section: Resultsmentioning

confidence: 99%

Synthesizing a transesterification catalyst via a condensation reaction and assessment of the mechanism using density functional theory

Wang,

He,

Yuan

2024

J of Chemical Tech & Biotech

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BACKGROUNDA solid acid (SPEI–EN–OHCMs) having dendritic –NH2 groups was prepared via oxidation of hydrothermal carbon microspheres (OHCMs) followed by a condensation reaction with the –NH2 groups of polyethyleneimine and sulfonation. The mechanism by which –COOH groups on the surfaces of oxidized hydrothermal carbon microspheres reacted with these –NH2 groups was assessed using density functional theory (DFT).RESULTActivation using a combination of 1–(3–dimethylaminopropyl)–3–ethyl carbodiimide hydrochloride (EDC) and hydroxysuccinimide (NHS) was found to promote the formation of amide bonds such that –NH2 groups were bonded to the microsphere surfaces. This effect provided more bonding sites for –SO3H groups. The DFT results indicated that the energy barrier on the potential energy surface in the presence of EDC and NHS was lowered by 18.1 kcal/mol. X–ray photoelectron spectroscopy (XPS) analyses also confirmed the introduction of –NH2 groups followed by –SO3H groups onto the surfaces of the OHCMs. The concentration of surface acid sites on the SPEI–EN–OHCMs was found to be as high as 11.8 mmol·g−1. Thermogravimetric (TG) data and elemental analysis results showed that the –SO3H groups on the SPEI–EN–OHCM surfaces were thermally stable below 180 °C.CONCLUSIONThis SPEI–EN–OHCMs were used to promote the transesterification reaction of waste frying oil (WFO) with methanol. A trial with a methanol/oil molar ratio of 10:1 at 110 °C for 4 h gave a fatty acid methyl esters (FAMEs) yield of 92.3%. After four reuses, an SPEI–EN–OHCMs specimen provided a FAMEs yield of 54.3%.This article is protected by copyright. All rights reserved.

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Near-infrared emission carbon dots for bio-imaging applications

Cited by 28 publications

References 42 publications

Biomass-Based Carbon Dots: Current Development and Future Perspectives

Biomass-Based Carbon Dots: Current Development and Future Perspectives

Investigation of Anticancer Therapy Using pH-Sensitive Carbon Dots-Functionalized Doxorubicin in Cubosomes

Synthesizing a transesterification catalyst via a condensation reaction and assessment of the mechanism using density functional theory

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