β-C3N4 Nanocrystals: Carbon Dots with Extraordinary Morphological, Structural, and Optical Homogeneity

Marco Cannas, Gaetano Giammona, Gianpiero Buscarino, Nicolò Mauro, Fabrizio Messina, Luisa Sciortino, Alice Sciortino, Nicolò Mauro, Dagmar Gerthsen, Radian Popescu, Reinhard Schneider, Alice Sciortino

Risultato della ricerca: Article

14 Citazioni (Scopus)

Abstract

Carbon nanodots are known for their appealing optical properties, especially their intense fluorescence tunable in the visible range. However, they are often affected by considerable issues of optical and structural heterogeneity, which limit their optical performance and limit the practical possibility of applying these nanoparticles in several fields. Here we developed a synthesis method capable of producing a unique variety of carbon nanodots displaying an extremely high visible absorption strength (ε > 3 × 106 M(dot)−1 cm−1) and a high fluorescence quantum yield (73%). The high homogeneity of these dots reflects in many domains: morphological (narrow size distribution), structural (quasiperfect nanocrystals with large electronic bandgaps), and optical (nontunable fluorescence from a single electronic transition). Moreover, we provide the proof of principle that an aqueous solution of these dots can be used as an active medium in a laser cavity, displaying a very efficient laser emission with dye-like characteristics, which reflects the benefits of such a highly homogeneous type of carbon-based nanodots.
Lingua originaleEnglish
pagine (da-a)1695-1700
Numero di pagine6
RivistaChemistry of Materials
Volume30
Stato di pubblicazionePublished - 2018

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Nanocrystals
Carbon
Fluorescence
Laser resonators
Quantum yield
Energy gap
Coloring Agents
Dyes
Optical properties
Nanoparticles
Lasers

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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β-C3N4 Nanocrystals: Carbon Dots with Extraordinary Morphological, Structural, and Optical Homogeneity. / Cannas, Marco; Giammona, Gaetano; Buscarino, Gianpiero; Mauro, Nicolò; Messina, Fabrizio; Sciortino, Luisa; Sciortino, Alice; Mauro, Nicolò; Gerthsen, Dagmar; Popescu, Radian; Schneider, Reinhard; Sciortino, Alice.

In: Chemistry of Materials, Vol. 30, 2018, pag. 1695-1700.

Risultato della ricerca: Article

Cannas, Marco ; Giammona, Gaetano ; Buscarino, Gianpiero ; Mauro, Nicolò ; Messina, Fabrizio ; Sciortino, Luisa ; Sciortino, Alice ; Mauro, Nicolò ; Gerthsen, Dagmar ; Popescu, Radian ; Schneider, Reinhard ; Sciortino, Alice. / β-C3N4 Nanocrystals: Carbon Dots with Extraordinary Morphological, Structural, and Optical Homogeneity. In: Chemistry of Materials. 2018 ; Vol. 30. pagg. 1695-1700.
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AU - Cannas, Marco

AU - Giammona, Gaetano

AU - Buscarino, Gianpiero

AU - Mauro, Nicolò

AU - Messina, Fabrizio

AU - Sciortino, Luisa

AU - Sciortino, Alice

AU - Mauro, Nicolò

AU - Gerthsen, Dagmar

AU - Popescu, Radian

AU - Schneider, Reinhard

AU - Sciortino, Alice

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AB - Carbon nanodots are known for their appealing optical properties, especially their intense fluorescence tunable in the visible range. However, they are often affected by considerable issues of optical and structural heterogeneity, which limit their optical performance and limit the practical possibility of applying these nanoparticles in several fields. Here we developed a synthesis method capable of producing a unique variety of carbon nanodots displaying an extremely high visible absorption strength (ε > 3 × 106 M(dot)−1 cm−1) and a high fluorescence quantum yield (73%). The high homogeneity of these dots reflects in many domains: morphological (narrow size distribution), structural (quasiperfect nanocrystals with large electronic bandgaps), and optical (nontunable fluorescence from a single electronic transition). Moreover, we provide the proof of principle that an aqueous solution of these dots can be used as an active medium in a laser cavity, displaying a very efficient laser emission with dye-like characteristics, which reflects the benefits of such a highly homogeneous type of carbon-based nanodots.

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