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© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Carbon nanodots (CNDs) are interesting materials due to their intrinsic fluorescence, electron-transfer properties, and low toxicity. Here, we report a sustainable, cheap, and scalable methodology to obtain CNDs from sugarcane syrup using a domestic microwave oven. The CNDs were characterized by infrared spectroscopy, dynamic light scattering, atomic force microscopy, absorption, and emission spectroscopies. The CNDs have 3 nm in diameter with low polydispersity and are fluorescent. A fluorescent hydrogel–CNDs composite was obtained using gelatin polypeptide as the polymeric matrix. The new hydrogel–CNDs composite was incorporated in the cavities of a double-clad optical fiber using an innovative approach that resulted in a microstructured polymer optical fiber with intrinsic fluorescence. This work shows a promising alternative for the fabrication of fluorescent materials since the CNDs synthesis is sustainable and environmentally friendly. These CNDs might substitute the rare-earth and other heavy metals of high cost and toxicity, which are usually incorporated in double-clad fibers for applications on lasers, amplifiers, and spectroscopy.

Details

Title
Synthesis of Carbon Nanodots from Sugarcane Syrup, and Their Incorporation into a Hydrogel-Based Composite to Fabricate Innovative Fluorescent Microstructured Polymer Optical Fibers
Author
Perli, Gabriel 1 ; Soares, Marco C P 2   VIAFID ORCID Logo  ; Cabral, Thiago D 3 ; Bertuzzi, Diego L 4   VIAFID ORCID Logo  ; Bartoli, Julio R 5   VIAFID ORCID Logo  ; Livi, Sébastien 6 ; Duchet-Rumeau, Jannick 6 ; Cordeiro, Cristiano M B 3   VIAFID ORCID Logo  ; Fujiwara, Eric 2   VIAFID ORCID Logo  ; Ornelas, Catia 4 

 Institute of Chemistry, University of Campinas, Campinas 13083-970, Brazil; Ingénierie des Matériaux Polymères, Université de Lyon, CNRS, UMR 5223, INSA Lyon, F69621 Villeurbanne, France 
 Laboratory of Photonic Materials and Devices, School of Mechanical Engineering, University of Campinas, Campinas 13083-860, Brazil 
 “Gleb Wataghin” Institute of Physics, University of Campinas, Campinas 13083-859, Brazil 
 Institute of Chemistry, University of Campinas, Campinas 13083-970, Brazil 
 School of Chemical Engineering, University of Campinas, Campinas 13083-852, Brazil 
 Ingénierie des Matériaux Polymères, Université de Lyon, CNRS, UMR 5223, INSA Lyon, F69621 Villeurbanne, France 
First page
553
Publication year
2022
Publication date
2022
Publisher
MDPI AG
e-ISSN
23102861
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2716539896
Copyright
© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.