Facile synthesis of fluorescent carbon nanodots from starch nanoparticles

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Title: Facile synthesis of fluorescent carbon nanodots from starch nanoparticles
Author(s): Chin, Suk Fun; Yazid, Siti Nur Akmar Mohd; Pang, Suh Cem; Ng, Sing Muk
Abstract: Fluorescent carbon dots were synthesized by the carbonization of preformed native sago starch nanoparticles, followed by surface oxidation in an aqueous medium. The morphology and particle sizes of carbon nanodots (CDs) were observed to be very similar to starch nanoparticles that were used as precursors. The particle sizes of CDs synthesized in this study were within the range 50-80 nm, which were much larger than those of very tiny CDs (1-5 nm) previously reported. The CDs portrayed fluorescent with constant emission wavelength peak at 430 nm when excited with various higher energy photons. The non-shifting of the emission wavelength peak suggested that CDs prepared in this study were highly homogenous and possessed mono-dispersed physiochemical properties.
Publication type: Journal article
Research centre: Swinburne University of Technology. Sarawak Campus. School of Engineering, Computing and Science
Source: Materials Letters, Vol. 85 (Oct 2012), pp. 50-52
Publication year: 2012
FOR Code(s): 03 Chemical Sciences; 09 Engineering
Keyword(s): Carbon nanodots; Fluorescent; Starch nanoparticles
Publisher: Elsevier
ISSN: 0167-577X
Publisher URL: http://dx.doi.org/10.1016/j.matlet.2012.06.082
Additional information: The authors acknowledge support from the Malaysia Ministry of Higher Education (MOHE) Fundamental Research Grant Scheme (FRGS), Grant no: 01(17)746/2010(32) and the Swinburne University of Technology Sarawak Campus (SUTS) Seed Grant, Grant no.: 2-5243.
Peer reviewed