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Energy transfer induced by carbon quantum dots in porous zinc oxide nanocomposite films

Suzuki, Kazumasa and Malfatti, Luca and Carboni, Davide and Loche, Danilo and Casula, Maria Francesca and Moretto, Alessandro and Maggini, Michele and Takahashi, Masahide and Innocenzi, Plinio (2015) Energy transfer induced by carbon quantum dots in porous zinc oxide nanocomposite films. The Journal of Physical Chemistry. C, Vol. 119 (5), p. 2837-2843. ISSN 1932-7447. eISSN 1932-7455. Article.

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DOI: 10.1021/jp510661d


A one-pot approach making use of a zinc oxide sol precursor and carbon quantum dots, together with a partially fluorinated block copolymer as templating agent, has been used to synthesize a porous matrix characterized by interesting energy transfer properties. The choice of the fluorinated surfactant for inducing the porosity into the inorganic matrix has allowed an easy removal of the templating agent at low temperature, preserving at the same time the functional properties of the carbon quantum dots. The resulting nanocomposite films have been characterized by steady-state 3D mapping that has evidenced a complex behavior as a function of the carbon quantum dots concentration. In particular, the luminescence bands of the zinc oxide matrix appear to be modulated by the broad emission of the carbon quantum dots, which depends on their aggregation state. These results can be thus considered as a step further toward the fine-tuning of the luminescence properties provided by zinc oxide-based nanocomposites as a result of a doping effect due to the presence of carbon quantum dots.

Item Type:Article
ID Code:10716
Uncontrolled Keywords:Carbon quantum dots, porous zinc oxide, energy transfer properties
Subjects:Area 09 - Ingegneria industriale e dell'informazione > ING-IND/22 Scienza e tecnologia dei materiali
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Architettura, Design e Urbanistica
002 Altri enti e centri di ricerca del Nord Sardegna > INSTM-Consorzio Interuniversitario Nazionale per la Scienza e la Tecnologia dei Materiali, Unità di ricerca di Sassari
Publisher:American Chemical Society
Deposited On:28 Jan 2015 16:25

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