Author/Authors :
Athanasios B. Bourlinos، نويسنده , , Michael A. Karakassides، نويسنده , , Antonios Kouloumpis، نويسنده , , Dimitrios Gournis، نويسنده , , Aristides Bakandritsos، نويسنده , , Irene Papagiannouli، نويسنده , , Panagiotis Aloukos، نويسنده , , Stelios Couris، نويسنده , , Katerina Hola، نويسنده , , Radek Zboril، نويسنده , , Marta Krysmann، نويسنده , , Emmanuel P. Giannelis، نويسنده ,
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.
