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Fluorescent Carbon Particles formed from Concentrated Glucose Solutions

Published online by Cambridge University Press:  17 January 2019

Tomilola Obadiya ,
Harsh Uppala  and
David Sidebottom
Tomilola Obadiya
Affiliation:
Dept. of Physics, Creighton University, 2500 California Plaza, Omaha, NE68178, U.S.A.
Harsh Uppala
Affiliation:
Dept. of Physics, Creighton University, 2500 California Plaza, Omaha, NE68178, U.S.A.
David Sidebottom*
Affiliation:
Dept. of Physics, Creighton University, 2500 California Plaza, Omaha, NE68178, U.S.A.
*
*(Email: [email protected])
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Abstract

Simple glucose solutions were heat treated in an attempt to produce carbon nanodots (CNDTs) with a monodisperse size distribution using a bottom-up approach. Absorption and fluorescence properties of the heat-treated solutions display remarkable similarity to CNDTs reported in the literature. However, particle-sizing and AFM measurements indicate the increasing fluorescence is accompanied by the growth of particles that are larger than most CNDTs discussed in the literature (a concentrated population of monodisperse 30 nm particles and a low concentration of much larger, roughly 500 nm, particles). A dialysis study, shows these larger particles are not responsible for the bulk of the optical properties but, rather the optical properties likely stem from molecular by-products that accompany the heating and caramelization of the sugar.

Keywords

absorptioncarbonizationnanoscaleoptical properties
Type
Articles
Information
MRS Advances , Volume 4 , Issue 2: Characterization, Mechanical Properties and Structure-Property Relationships , 2019 , pp. 67 - 72
Copyright
Copyright © Materials Research Society 2019 

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