Open AccessSynthesis of silicon quantum dots using chitosan as a novel reductor agent
Author(s) -
Pedro A Hernández-Abril,
Jorge L Iriqui-Razcón,
E. León-Sarabia,
Sergio David Leal-Soto,
M. E. ÁlvarezRamos,
D. Berman-Mendoza,
H. J. Higuera-Valenzuela
Publication year - 2021
Publication title -
revista mexicana de física
Language(s) - English
Resource type - Journals
eISSN - 2683-2224
pISSN - 0035-001X
DOI - 10.31349/revmexfis.67.249
Subject(s) - chromaticity , silicon , absorbance , chitosan , microelectronics , materials science , quantum dot , optoelectronics , nanotechnology , photonics , chemical engineering , photochemistry , chemistry , optics , physics , organic chemistry , engineering
In the present paper we report a novel synthesis method of silicon quantum dots (SiQDs) using 3-Aminopropyltriethoxysilane (APTES) as silicon precursor and low molecular weight chitosan (CS) as reducing agent. The obtained SiQDs have a hydrodynamic diameter of 2.3 nm, water dispersible, presents blue emission band at 434.5 nm (2.85 eV) with a Commission Internationale de l’Eclairage 1931 (CIE1931) chromaticity coordinates (x = 0.1665, y = 0.1222), the experimental absorbance of the SiQDS was measured and the band gap (Eg) was estimated through PerkinElmer’s method, the obtained value was 3.1 eV and a positive ζ-potential of + 35 mV, resulting in photonics, microelectronics, and biotechnological potential applications.
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