Structure and Optical Properties of Carbon Nanoparticles Generated by Laser Treatment of Graphite in Liquids

Natalie Tarasenka, Aleksandr Stupak, Nikolai Tarasenko, Supriya Chakrabarti, D Mariotti

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In this paper, we report the one-step synthesis of luminescent carbon nanoparticles (NPs) via laser irradiation of a graphite target in a solvent H2O, ethanol, or a 0.008 m aqueous diethylenetriaminepentaacetic acid (DTPA) solution. This is a simple approach for the fabrication of carbon dots with tunable photoluminescence (PL) that differs from other preparation methods, as no post-passivation step is required. The unfocused beam of the second harmonic (wavelength 532 nm) of the Nd:YAG laser was used in our experiments. The sizes of the prepared NPs were mainly distributed in the range of 1–8 nm with an average value of 3 nm. Carbon NPs of different inner structure were prepared: hexagonal diamond phase in aqueous DTPA solution, orthorhombic carbon phase in ethanol, and amorphous carbon in water. The synthesized carbon NPs have strong luminescence in the visible region, which makes them attractive for numerous biological applications. The photoluminescence of the synthesized NPs was investigated at different excitation wavelengths, from 260 to 450 nm. The highest intensities of the emission bands were detected for an excitation wavelength of 400 nm.
LanguageEnglish
Pages1074-1083
JournalChemPhysChem
Volume18
Issue number9
Early online date23 Dec 2016
DOIs
Publication statusPublished - 5 May 2017

Fingerprint

Graphite
Carbon
Optical properties
Nanoparticles
Lasers
Liquids
Wavelength
Photoluminescence
Ethanol
Diamond
Acids
Amorphous carbon
Laser beam effects
Passivation
Luminescence
Fabrication
Water
Experiments

Keywords

  • carbon dots
  • laser irradiation
  • nanoparticles
  • photoluminescence
  • structural defects

Cite this

Tarasenka, Natalie ; Stupak, Aleksandr ; Tarasenko, Nikolai ; Chakrabarti, Supriya ; Mariotti, D. / Structure and Optical Properties of Carbon Nanoparticles Generated by Laser Treatment of Graphite in Liquids. In: ChemPhysChem. 2017 ; Vol. 18, No. 9. pp. 1074-1083.
@article{984ec1fd3e4945b19bf975445534f62c,
title = "Structure and Optical Properties of Carbon Nanoparticles Generated by Laser Treatment of Graphite in Liquids",
abstract = "In this paper, we report the one-step synthesis of luminescent carbon nanoparticles (NPs) via laser irradiation of a graphite target in a solvent H2O, ethanol, or a 0.008 m aqueous diethylenetriaminepentaacetic acid (DTPA) solution. This is a simple approach for the fabrication of carbon dots with tunable photoluminescence (PL) that differs from other preparation methods, as no post-passivation step is required. The unfocused beam of the second harmonic (wavelength 532 nm) of the Nd:YAG laser was used in our experiments. The sizes of the prepared NPs were mainly distributed in the range of 1–8 nm with an average value of 3 nm. Carbon NPs of different inner structure were prepared: hexagonal diamond phase in aqueous DTPA solution, orthorhombic carbon phase in ethanol, and amorphous carbon in water. The synthesized carbon NPs have strong luminescence in the visible region, which makes them attractive for numerous biological applications. The photoluminescence of the synthesized NPs was investigated at different excitation wavelengths, from 260 to 450 nm. The highest intensities of the emission bands were detected for an excitation wavelength of 400 nm.",
keywords = "carbon dots, laser irradiation, nanoparticles, photoluminescence, structural defects",
author = "Natalie Tarasenka and Aleksandr Stupak and Nikolai Tarasenko and Supriya Chakrabarti and D Mariotti",
year = "2017",
month = "5",
day = "5",
doi = "10.1002/cphc.201601182",
language = "English",
volume = "18",
pages = "1074--1083",
journal = "ChemPhysChem",
issn = "1439-4235",
number = "9",

}

Structure and Optical Properties of Carbon Nanoparticles Generated by Laser Treatment of Graphite in Liquids. / Tarasenka, Natalie; Stupak, Aleksandr; Tarasenko, Nikolai; Chakrabarti, Supriya; Mariotti, D.

In: ChemPhysChem, Vol. 18, No. 9, 05.05.2017, p. 1074-1083.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Structure and Optical Properties of Carbon Nanoparticles Generated by Laser Treatment of Graphite in Liquids

AU - Tarasenka, Natalie

AU - Stupak, Aleksandr

AU - Tarasenko, Nikolai

AU - Chakrabarti, Supriya

AU - Mariotti, D

PY - 2017/5/5

Y1 - 2017/5/5

N2 - In this paper, we report the one-step synthesis of luminescent carbon nanoparticles (NPs) via laser irradiation of a graphite target in a solvent H2O, ethanol, or a 0.008 m aqueous diethylenetriaminepentaacetic acid (DTPA) solution. This is a simple approach for the fabrication of carbon dots with tunable photoluminescence (PL) that differs from other preparation methods, as no post-passivation step is required. The unfocused beam of the second harmonic (wavelength 532 nm) of the Nd:YAG laser was used in our experiments. The sizes of the prepared NPs were mainly distributed in the range of 1–8 nm with an average value of 3 nm. Carbon NPs of different inner structure were prepared: hexagonal diamond phase in aqueous DTPA solution, orthorhombic carbon phase in ethanol, and amorphous carbon in water. The synthesized carbon NPs have strong luminescence in the visible region, which makes them attractive for numerous biological applications. The photoluminescence of the synthesized NPs was investigated at different excitation wavelengths, from 260 to 450 nm. The highest intensities of the emission bands were detected for an excitation wavelength of 400 nm.

AB - In this paper, we report the one-step synthesis of luminescent carbon nanoparticles (NPs) via laser irradiation of a graphite target in a solvent H2O, ethanol, or a 0.008 m aqueous diethylenetriaminepentaacetic acid (DTPA) solution. This is a simple approach for the fabrication of carbon dots with tunable photoluminescence (PL) that differs from other preparation methods, as no post-passivation step is required. The unfocused beam of the second harmonic (wavelength 532 nm) of the Nd:YAG laser was used in our experiments. The sizes of the prepared NPs were mainly distributed in the range of 1–8 nm with an average value of 3 nm. Carbon NPs of different inner structure were prepared: hexagonal diamond phase in aqueous DTPA solution, orthorhombic carbon phase in ethanol, and amorphous carbon in water. The synthesized carbon NPs have strong luminescence in the visible region, which makes them attractive for numerous biological applications. The photoluminescence of the synthesized NPs was investigated at different excitation wavelengths, from 260 to 450 nm. The highest intensities of the emission bands were detected for an excitation wavelength of 400 nm.

KW - carbon dots

KW - laser irradiation

KW - nanoparticles

KW - photoluminescence

KW - structural defects

U2 - 10.1002/cphc.201601182

DO - 10.1002/cphc.201601182

M3 - Article

VL - 18

SP - 1074

EP - 1083

JO - ChemPhysChem

T2 - ChemPhysChem

JF - ChemPhysChem

SN - 1439-4235

IS - 9

ER -