One-step ultrasonic synthesis of water-soluble carbon nanoparticles with excellent photoluminescent properties

Li, Haitao; He, Xiaodie; Yang, Liu; Huang, Huihui; Lian, Suoyuan; Lee, Shuit‐Tong; Kang, Zhenhui

doi:10.1016/j.carbon.2010.10.004

Cited by 788 publications

(436 citation statements)

References 35 publications

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“…For example 199 nm reflects the presence of C 6 H 2 , while those at 215 nm and 226 nm belong to C 8 H 2 [9]. As seen in Fig 4, the peak intensities of C 6 H 2 were more pronounced than those of C 8 H 2 for all our samples, indicating more favourable generation of shorter chain polyynes (C 6 H 2 ) at higher laser repetition rate.…”

Section: Optical Measurementsmentioning

confidence: 58%

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Laser assisted synthesis of carbon nanoparticles with controlled viscosities for printing applications

Bagga

McCann

Wang

2015

Journal of Colloid and Interface Science

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High-quality carbon nanoparticles with controlled viscosity and high aqueous stability were prepared by liquid-phase laser ablation of a graphite target in deionized water. The size distribution was found to vary from 5 nm to 50 nm with mean size of 18 nm, in the absence of any reducing chemical reagents. Efficient generation of short chain polyynes was recorded for high laser repetition rates. Homogeneous and stable nanoparticle suspensions with viscosities ranging from 0.89 to 12 mPa.s were obtained by suspending the nanoparticles in different solvent mixtures such as glycerol-water and isopropanol-water. Optical properties were investigated by absorption and photoluminescence spectroscopy. Raman spectroscopy confirmed graphitic-like structure of nanoparticles and the surface chemistry was revealed by Fouriertransform infrared spectroscopy demonstrating sufficient electrostatic stabilization to avoid particle coagulation or flocculation. This paper present an exciting alternative method to engineer carbon nanoparticles and their potential use as a ligand-free nano-ink for ink jet printing (jetting) applications.

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Section: Optical Measurementsmentioning

confidence: 58%

“…Topdown strategies include electrochemical synthesis [6], laser ablation [7], and arc discharge [8]. Bottom-up strategies include ultrasonic methods [9], microwave assisted synthesis [10], and hydrothermal treatment [11].…”

Section: Introductionmentioning

confidence: 99%

Laser assisted synthesis of carbon nanoparticles with controlled viscosities for printing applications

Bagga

McCann

Wang

2015

Journal of Colloid and Interface Science

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show abstract

“…10 ); as the excitation wavelength increases, the emission peak is displaced to longer wavelengths and a weaker signal is recorded. Upconversion occurs when the emitted radiation has higher energy compared to the incident photons and has also been observed for both gC-dots 25 and aC-dots 74 ( Fig. 11 ).…”

Section: Photoluminescence Behaviormentioning

confidence: 64%

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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“…In this regard, monodispersed water-soluble fluorescent carbon nanoparticles (CNPs) were synthesized directly from glucose by a one-step alkali or acid assisted ultrasonic treatment (Li et al, 2011). The results showed that the particle surfaces were rich in hydroxyl groups, giving them high hydrophilicity.…”

Section: Nanomaterialsmentioning

confidence: 99%

Current Achievement and Future Potential of Fluorescence Spectroscopy

Al-Rawashdeh¹

2012

Macro to Nano Spectroscopy

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One-step ultrasonic synthesis of water-soluble carbon nanoparticles with excellent photoluminescent properties

Cited by 788 publications

References 35 publications

Laser assisted synthesis of carbon nanoparticles with controlled viscosities for printing applications

Laser assisted synthesis of carbon nanoparticles with controlled viscosities for printing applications

From highly graphitic to amorphous carbon dots: A critical review

Current Achievement and Future Potential of Fluorescence Spectroscopy

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