Synthesis, optical properties and applications of red/near-infrared carbon dots

Yi Han; Letizia Liccardo; Elisa Moretti; Haiguang Zhao; Alberto Vomiero

doi:10.1039/D2TC02044K

Synthesis, optical properties and applications of red/near-infrared carbon dots

Yi Han,^a Letizia Liccardo,

^b Elisa Moretti,

*^b Haiguang Zhao

*^a and Alberto Vomiero

*^bc

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* Corresponding authors

^a School of Basic Medicine, State Key Laboratory of Bio-Fibers and Eco-Textiles & College of Textiles and Clothes, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, P. R. China
E-mail: hgzhao@qdu.edu.cn

^b Department of Molecular Science and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172 Venezia Mestre, Italy
E-mail: elisa.moretti@unive.it

^c Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, 971 87 Luleå, Sweden
E-mail: alberto.vomiero@ltu.se

Abstract

Compared to inorganic quantum dots, fluorescent carbon nanomaterials (C-dots) have gained significant attention because of their unique optoelectrical properties and low toxicity. Although many review articles summarized the last research achievements, only a few of them are focusing on red/near-infrared C-dots. Due to their unique optical and optoelectrical properties in the red/near-infrared region, this interesting subclass of C-dots may be applied as important building blocks for several applications spanning from bioimaging and nano-thermometry, to luminescent solar concentrators (LSCs) and photoelectrochemical systems. Therefore, in this review the synthesis and the fluorescence mechanism together with the most important applications in thermometry, bio-imaging, LSCs and photocatalysis of red/near-infrared C-dots are considered. Furthermore, another aim is to highlight the available approaches to improve the carbonization degree and, additionally, to discuss the structure/composition correlated optical properties. Finally, outlooks, future perspectives and challenges are also discussed for these highly promising nanostructures.

This article is part of the themed collections: Journal of Materials Chemistry C Recent Review Articles and 2022 Journal of Materials Chemistry C Most Popular Articles

Journal of Materials Chemistry C

Synthesis, optical properties and applications of red/near-infrared carbon dots

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