Recent Functionalization Approaches to Enhance the Applicability of Carbon Nanostructures

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "2D and Carbon Nanomaterials".

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 5757

Special Issue Editor


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Guest Editor
Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas-IRICA, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
Interests: hydrogels; graphene; magnetic hydrogels; drug release; 3D cell culture

Special Issue Information

Dear Colleagues,

Carbon nanomaterials (nanotubes, graphene, fullerenes, nanodots, nanodiamonds, and their derivates) have attracted significant interest from science and industry. Their excellent properties make them promising materials in many application fields. Modification of their surfaces with functional groups offers the opportunity to enhance their chemical and physical properties. For instance, chemical functionalization can improve their solubility in most solvents and prevent their aggregation. More importantly, surface modification decreases their toxicity and improves biocompatibility, showing potential for biomedical applications. Often, these transformations require tedious and harsh treatments that can alter the carbon nanostructure’s lattice and therefore modify their properties. This Special Issue aims to compile new functionalization approaches that expand the applications of these nanomaterials, including mild and environmental conditions, and non-conventional methods such as microwave irradiation, mechano-chemistry, or laser technologies. Alternative reaction media, such as ionic liquids, fluorinated solvents, or supercritical fluids, will also be included.

Dr. Sonia Merino
Guest Editor

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Keywords

  • Carbon nanostructures
  • Functionalization
  • Covalent approaches
  • Non-covalent approaches
  • Non-conventional methods
  • Unusual reaction media

Published Papers (2 papers)

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Research

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9 pages, 2261 KiB  
Article
Noncovalent Functionalization of Single-Walled Carbon Nanotubes with a Photocleavable Polythiophene Derivative
by Jyorthana Rajappa Muralidhar, Koichi Kodama, Takuji Hirose, Yoshihiro Ito and Masuki Kawamoto
Nanomaterials 2022, 12(1), 52; https://doi.org/10.3390/nano12010052 - 25 Dec 2021
Cited by 3 | Viewed by 2676
Abstract
Single-walled carbon nanotubes (SWCNTs) have received extensive research attention owing to their extraordinary optical, electrical, and mechanical properties, which make them particularly attractive for application in optoelectronic devices. However, SWCNTs are insoluble in almost all solvents. Therefore, developing methods to solubilize SWCNTs is [...] Read more.
Single-walled carbon nanotubes (SWCNTs) have received extensive research attention owing to their extraordinary optical, electrical, and mechanical properties, which make them particularly attractive for application in optoelectronic devices. However, SWCNTs are insoluble in almost all solvents. Therefore, developing methods to solubilize SWCNTs is crucial for their use in solution-based processes. In this study, we developed a photocleavable polythiophene-derivative polymer dispersant for SWCNTs. The noncovalent surface functionalization of SWCNTs with a polymer allows their dispersal in tetrahydrofuran. The resultant solution-processed polymer/SWCNT composite film undergoes a hydrophobic-to-hydrophilic change in surface properties upon light irradiation (313 nm) because hydrophilic carboxyl groups are formed upon photocleavage of the hydrophobic solubilizing units in the polymer. Furthermore, the photocleaved composite film displays a 38-fold increase in electrical conductivity. This is due to the removal of the solubilizing unit, which is electrically insulating. Full article
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Review

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24 pages, 4822 KiB  
Review
Carbon-Based Nanocomposite Smart Sensors for the Rapid Detection of Mycotoxins
by Xiaoli Ma, Xinbo Li, Wenrui Zhang, Fanxing Meng, Xin Wang, Yanan Qin and Minwei Zhang
Nanomaterials 2021, 11(11), 2851; https://doi.org/10.3390/nano11112851 - 26 Oct 2021
Cited by 10 | Viewed by 2470
Abstract
Carbon-based nanomaterials have become the subject of intensive interest because their intriguing physical and chemical properties are different from those of their bulk counterparts, leading to novel applications in smart sensors. Mycotoxins are secondary metabolites with different structures and toxic effects produced by [...] Read more.
Carbon-based nanomaterials have become the subject of intensive interest because their intriguing physical and chemical properties are different from those of their bulk counterparts, leading to novel applications in smart sensors. Mycotoxins are secondary metabolites with different structures and toxic effects produced by fungi. Mycotoxins have low molecular weights and highly diverse molecular structures, which can induce a spectrum of biological effects in humans and animals even at low concentrations. A tremendous amount of biosensor platforms based on various carbon nanocomposites have been developed for the determination of mycotoxins. Therefore, the contents of this review are based on a balanced combination of our own studies and selected research studies performed by academic groups worldwide. We first address the vital preparation methods of biorecognition unit (antibodies, aptamers, molecularly imprinted polymers)-functionalized carbon-based nanomaterials for sensing mycotoxins. Then, we summarize various types of smart sensors for the detection of mycotoxins. We expect future research on smart sensors to show a significant impact on the detection of mycotoxins in food products. Full article
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