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Two-Dimensional Quantum Dots: Design, Synthetic Strategies and Technological Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Quantum Materials".

Deadline for manuscript submissions: closed (10 September 2022) | Viewed by 1846

Special Issue Editors


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Guest Editor
Department of Physics and Chemistry - Emilio Segrè, University of Palermo, Palermo, Italy
Interests: dyes; photochromism; organic nanomaterials; photovoltaics

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Guest Editor
“Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, P.O. Box 522, 11000 Belgrade, Serbia
Interests: graphene; graphene quantum dots; photoluminescence
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Special Issue Information

Dear Colleagues,

We are pleased to advertise the preparation of a new Special Issue in Materials, entitled “Two-dimensional Quantum Dots: Design, Synthetic Strategies and Technological Applications”.

In the last decade, the increasing focus on nanotechnology and nanomaterials’ properties funneled scientists’ attention on quantum confined systems, characterized by outstanding mechanical, optical and electronic features. This contributed to their rapid testing in a broad range of applications in the fields of electronics, imaging and medical-, energy- and engineering-related areas. Among those nanosized materials, two-dimensional quantum dots (2D QDs) attracted general interest due to a fascinating combination of versatile functionalization approaches and precise modulation of their peculiar features. Progression in this area is moving forward quickly; thus, we would like to edit this Special Issue to offer a broad readership a detailed and updated state of the art in 2D QDs research in terms of the development of synthetic strategies, the implementation of theoretical models and major technological achievements. With this aim in our mind, we warmly invite you to contribute to this Special Issue presenting your latest research achievements in this field. We welcome reports related to research areas such as sensing, electronics and energy applications, as well as biological context, as a tribute to 2D QDs and the high resonance these materials are receiving. Considering the elevated number of already-published articles on this topic, reviews are warmly welcomed, as they will offer a moment of analysis devoted to the status of researchers’ activity.

Dr. Aurelio Bonasera
Dr. Svetlana Jovanović
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • carbon-based quantum dots (CQDs, GQDs and g-C3N4 dots)
  • phosphorene quantum dots (PQDs)
  • transition metal chalcogenide quantum dots (TMC QDs)
  • multi-element 2D QDs
  • theoretical model implementation
  • synthetic strategies
  • photoluminescence
  • sensing
  • LED technology
  • energy-related applications

Published Papers (1 paper)

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Research

17 pages, 7716 KiB  
Article
Antioxidative and Photo-Induced Effects of Different Types of N-Doped Graphene Quantum Dots
by Svetlana Jovanovic, Aurelio Bonasera, Sladjana Dorontic, Danica Zmejkoski, Dusan Milivojevic, Tamara Janakiev and Biljana Todorovic Markovic
Materials 2022, 15(19), 6525; https://0-doi-org.brum.beds.ac.uk/10.3390/ma15196525 - 20 Sep 2022
Cited by 3 | Viewed by 1347
Abstract
Due to the increasing number of bacterial infections and the development of resistivity toward antibiotics, new materials and approaches for treatments must be urgently developed. The production of new materials should be ecologically friendly considering overall pollution with chemicals and economically acceptable and [...] Read more.
Due to the increasing number of bacterial infections and the development of resistivity toward antibiotics, new materials and approaches for treatments must be urgently developed. The production of new materials should be ecologically friendly considering overall pollution with chemicals and economically acceptable and accessible to the wide population. Thus, the possibility of using biocompatible graphene quantum dots (GQDs) as an agent in photodynamic therapy was studied. First, dots were obtained using electrochemical cutting of graphite. In only one synthetic step using gamma irradiation, GQDs were doped with N atoms without any reagent. Obtained dots showed blue photoluminescence, with a diameter of 19–89 nm and optical band gap of 3.23–4.73 eV, featuring oxygen-containing, amino, and amide functional groups. Dots showed antioxidative activity; they quenched •OH at a concentration of 10 μg·mL−1, scavenged DPPH• radicals even at 5 μg·mL−1, and caused discoloration of KMnO4 at 30 μg·mL−1. Under light irradiation, dots were able to produce singlet oxygen, which remained stable for 10 min. Photoinduced effects by GQDs were studied on several bacterial strains (Listeria monocytogenes, Bacillus cereus, clinical strains of Streptococcus mutans, S. pyogenes, and S. sangunis, Pseudomonas aeruginosa, and one yeast strain Candida albicans) but antibacterial effects were not noticed. Full article
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