Synthesis, characterization and non-linear optical response of organophilic carbon dots

Abstract
For the first time ever we report the nonlinear optical (NLO) properties of carbon dots (C-dots). The C-dots for these experiments were synthesized by mild pyrolysis of lauryl gallate. The resulting C-dots bear lauryl chains and, hence, are highly dispersible in polar organic solvents, like chloroform. Dispersions in CHCl3 show significant NLO response. Specifically, the C-dots show negative nonlinear absorption coefficient and negative nonlinear refraction. Using suspensions with different concentrations these parameters are quantified and compared to those of fullerene a well-known carbon molecule with proven NLO response. © 2013 Elsevier Ltd. All rights reserved.

Citation
Bourlinos AB, Karakassides MA, Kouloumpis A, Gournis D, Bakandritsos A, et al. (2013) Synthesis, characterization and non-linear optical response of organophilic carbon dots. Carbon 61: 640–643. Available: http://dx.doi.org/10.1016/j.carbon.2013.05.017.

Acknowledgements
We gratefully acknowledge the support by the Operational Program Research and Development for Innovations-European Regional Development Fund (project CZ.1.05/2.1.00/03.0058), Operational Program Education for Competitiveness (CZ.1.07/2.3.00/20.0017) and Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). This work was additionally supported by the Grant Agency of the Czech Republic (P208/12/G016) and a student project of Palacky University (PrF_2013_028) as well as the European Union (European Social Fund-ESF) and Greek national funds through the Operational Program "Education and Lifelong Learning" of the National Strategic Reference Framework (NSRF)-Research Funding Program: THALIS and HERAKLEITOUS II. The authors would like to thank Dr. K. Safarova for her assistance in microscopy studies.

Publisher
Elsevier BV

Journal
Carbon

DOI
10.1016/j.carbon.2013.05.017

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