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用于抗氧化剂的氮、硫共掺杂碳点及其作为分子载体的纳米载体潜力。

N, S-codoped carbon dots for antioxidants and their nanovehicle potential as molecular cargoes.

作者信息

Kasif Md, Alarifi Abdullah, Afzal Mohd, Thirugnanasambandam Arunkumar

机构信息

School of Energy Science and Engineering, Indian Institute of Technology Guwahati Guwahati 781039 India.

Department of Chemistry, College of Science, King Saud University Riyadh 11451 Saudi Arabia

出版信息

RSC Adv. 2024 Oct 10;14(44):32041-32052. doi: 10.1039/d4ra05994h. eCollection 2024 Oct 9.

DOI:10.1039/d4ra05994h
PMID:39391617
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11465998/
Abstract

This work demonstrates the facile one step hydrothermal synthesis of carbon dots doped with nitrogen and sulfur (SCDs). The carbon dots have various uses, including their use as molecular payloads for antioxidant and drug delivery purposes. The sizes of the CDs were determined using transmission electron microscopy (TEM), which revealed an average size of 4.2 nm. The successful sulfur doping was confirmed by Fourier-transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS), which identified typical functional groups and elemental composition. UV-vis and photoluminescence (PL) spectroscopy revealed a wide absorption peak at 280 nm and a pronounced blue emission at 440 nm. Colloidal stability was confirmed by dynamic light scattering (DLS) and zeta potential analysis. The antioxidant characteristics were evaluated through the use of electron paramagnetic resonance (EPR) spectroscopy, which confirmed a notable ability to scavenge radicals which revealed more than 80% radical scavenging capability. The SCDs also showed nontoxic behavior against living cells. The findings emphasize the potential of SCDs in the fields of bioimaging, drug delivery, and as potent antioxidant agents.

摘要

这项工作展示了一种简便的一步水热法合成氮硫共掺杂碳点（SCDs）的方法。这些碳点有多种用途，包括用作抗氧化剂和药物递送的分子载体。通过透射电子显微镜（TEM）测定了碳点的尺寸，结果显示其平均尺寸为4.2纳米。傅里叶变换红外光谱（FTIR）和X射线光电子能谱（XPS）证实了硫的成功掺杂，确定了典型的官能团和元素组成。紫外可见光谱和光致发光（PL）光谱显示在280纳米处有一个宽吸收峰，在440纳米处有明显的蓝色发射。通过动态光散射（DLS）和zeta电位分析证实了胶体稳定性。通过电子顺磁共振（EPR）光谱评估了抗氧化特性，证实其具有显著的清除自由基能力，自由基清除能力超过80%。SCDs对活细胞也表现出无毒行为。这些发现强调了SCDs在生物成像、药物递送以及作为强效抗氧化剂领域的潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/dc7665ff1057/d4ra05994h-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/64234846a334/d4ra05994h-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/7dd58ab92aea/d4ra05994h-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/5203bbb5e71a/d4ra05994h-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/e1299fb60419/d4ra05994h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/f151615d60c6/d4ra05994h-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/1f280d53d378/d4ra05994h-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/dc7665ff1057/d4ra05994h-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/64234846a334/d4ra05994h-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/7dd58ab92aea/d4ra05994h-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/5203bbb5e71a/d4ra05994h-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/e1299fb60419/d4ra05994h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/f151615d60c6/d4ra05994h-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/1f280d53d378/d4ra05994h-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b446/11465998/dc7665ff1057/d4ra05994h-f7.jpg

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引用本文的文献

[1]
Carbon dots derived from Rosc (ginger) with hemostatic effects.

Front Mol Biosci. 2025-3-4

本文引用的文献

[1]
Facile synthesis of sulphur-doped carbon dots (S-CDs) using a hydrothermal method for the selective sensing of Cr and Fe ions: application to environmental water sample analysis.

RSC Adv. 2024-1-22

[2]
Green synthesis of multi-functional carbon dots from medicinal plant leaves for antimicrobial, antioxidant, and bioimaging applications.

Sci Rep. 2023-4-19

[3]
Tailor made magnetic nanolights: fabrication to cancer theranostics applications.

Nanoscale Adv. 2021-10-25

[4]
Green synthesis of carbon dots and their applications.

RSC Adv. 2021-7-21

[5]
Microbial inhibition and biosensing with multifunctional carbon dots: Progress and perspectives.

Biotechnol Adv. 2021-12

[6]
Advances in the Methods for the Synthesis of Carbon Dots and Their Emerging Applications.

Polymers (Basel). 2021-9-20

[7]
Carbon-Dots-Initiated Photopolymerization: An Synthetic Approach for MXene/Poly(norepinephrine)/Copper Hybrid and its Application for Mitigating Water Pollution.

ACS Appl Mater Interfaces. 2021-7-7

[8]
Green Sources Derived Carbon Dots for Multifaceted Applications.

J Fluoresc. 2021-7

[9]
Immobilization of Heteroatom-Doped Carbon Dots onto Nonpolar Plastics for Antifogging, Antioxidant, and Food Monitoring Applications.

Langmuir. 2021-3-23

[10]
Green Synthesis of Multifunctional Carbon Dots with Antibacterial Activities.

Nanomaterials (Basel). 2021-2-2

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