Magnetic‐Nanoparticle‐Doped Carbogenic Nanocomposite: An Effective Magnetic Resonance/Fluorescence Multimodal Imaging Probe

Srivastava, Sarika; Awasthi, Rishi; Tripathi, Deepak; Mohit, K.; Agarwal, Vikas; Agrawal, Vinita; Gajbhiye, N. S.; Gupta, Rakesh Kumar

doi:10.1002/smll.201200447

Cited by 8 publications

(9 citation statements)

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“…Therefore, the Gd-doped CQDs could be employed in biomedical research for multimodal imaging, where the MRI and FL modalities can be exploited simultaneously to improve image analysis. In another study, 6 nm iron oxidedoped CQDs (IO-CQDs) were produced via the pyrolysis of organic molecules as precursor in the presence of small Fe 3 O 4 nanoparticles for purpose of MR/FL multi-imaging [78]. IO-CQDs were injected intravenously into mice and results suggested observable FL signals in the spleen slide samples and contrast-enhanced MRI images under both T 1 and T 2 models.…”

Section: Bioimagingmentioning

confidence: 99%

Carbon quantum dots: recent progresses on synthesis, surface modification and applications

Farshbaf

Davaran

Rahimi

et al. 2017

Artificial Cells, Nanomedicine, and Biotechnology

176

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Generally, carbon nanoparticles with a size of 10 nm (or less) are called carbon quantum dots (CQDs, C-dots or CD), which have created huge excitement due to their advantages in chemical inertness, high water solubility, excellent biocompatibility, resistance to photobleaching and various optical superiority. In this article, we describe the recent advancements in the area of CQDs; concentrating on their synthesis techniques, size control, surface modification approaches, optical properties, luminescent mechanism, and their applications in bioimaging, biosensing, drug delivery and catalysis.

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Section: Bioimagingmentioning

confidence: 99%

Carbon quantum dots: recent progresses on synthesis, surface modification and applications

Farshbaf

Davaran

Rahimi

et al. 2017

Artificial Cells, Nanomedicine, and Biotechnology

176

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“…66 Controlled carbonization of a mixture of citric acid, ethylenediamine, and Mg(OH) 2 leads to Mg-, N-co-doped C-dots with improved PL intensity suitable for in vivo cell imaging. 67 Iron oxide-doped aC-dots 68 and gadolinium-doped aC-dots 69 (via pyrolysis of tris(hydroxymethyl)aminomethane, betaine hydrochloride, and gadopentetic acid) show great potential for multimodal magnetic resonance imaging simultaneously with fl uorescent monitoring. Boron/nitrogen co-doped C-dots (via hydrothermal treatment of N -(4-hydroxyphenyl) glycine and boric acid) exhibit a reversible "switching on and off" PL mechanism in response to the presence of protoporphyrin and carcinogenic dyes.…”

Section: Heteroatoms and Functional Groupsmentioning

confidence: 99%

From highly graphitic to amorphous carbon dots: A critical review

Kelarakis

2014

MRS Energy & Sustainability

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Graphitic and amorphous C-dots share common characteristics in their photoluminescence behavior. However, the graphitic dots have a lead as electrocatalyst for fuel cells, sensitizers, and electron acceptors for solar cells.The emergence of carbogenic nanoparticles (C-dots) as a new class of photoluminescent (PL) nanoemitters is directly related to their economical preparation, nontoxic nature, versatility, and tunability. C-dots are typically prepared by pyrolytic or oxidative treatment of suitable precursors.While the surface functionalities critically affect the dispersibility and the emission intensity of C-dots in a given environment, it is the nature of the carbogenic core that actually imparts certain intrinsic properties. Depending on the synthetic approach and the starting materials, the structure of the carbogenic core can vary from highly graphitic all the way to completely amorphous. This critical review focuses on correlating the functions of C-dots with the graphitic or amorphous nature of their carbogenic cores. The systematic classifi cation on that basis can provide insights on the origins of their intriguing photophysical behavior and can contribute in realizing their full potential in challenging applications.Keywords : luminescence ; nanostructure ; carbonization REVIEW DISCUSSION POINT ▪ C-dots set an example that low-cost, non-toxic materials can effectively supplant highly engineered, yet toxic compounds in challenging applications.

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“…These nanoparticles were injected into rats and were uptaken by RAW264.7 cells and visualized in the cytoplasm. Fluorescence and MRI enhanced signals were observed because of T1 and T2 relaxation [100].…”

Section: Fluorescence Reflectance Imaging Of a Nude Mouse (A-c) Beformentioning

confidence: 99%

Fluorescent Nanomaterials for Cellular Imaging

Ghosh¹,

Sharma²

2020

Fluorescence Methods for Investigation of Living Cells and Microorganisms

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This chapter will provide an overview of different nanomaterials, which are being used for nondestructive imaging of living entities such as cells and tissues. The chapter begins with the basics of fluorescence imaging followed by a discussion on the advantages of fluorescent nanomaterials as compared to commonly used molecular fluorophores and imaging probes. Specific features and applications of nanomaterials frequently exploited in bioimaging are summarized. These include fluorescent silicon-based nanomaterials, hydrogels, polymer dots, magnetic nanoparticles, fluorescent quantum dots, carbon dots and other carbon-based nanomaterials, noble metal nanoparticles, micelles, dendrimers, lipid nanoparticles, and so on. Specific examples on their applications in bioimaging including multimodal imaging and targeted imaging are illustrated.

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Magnetic‐Nanoparticle‐Doped Carbogenic Nanocomposite: An Effective Magnetic Resonance/Fluorescence Multimodal Imaging Probe

Cited by 8 publications

References 0 publications

Carbon quantum dots: recent progresses on synthesis, surface modification and applications

Carbon quantum dots: recent progresses on synthesis, surface modification and applications

From highly graphitic to amorphous carbon dots: A critical review

Fluorescent Nanomaterials for Cellular Imaging

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