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Molecules
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Carbon Nanodots for Analytical Applications
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Carbon Nanodots for Analytical Applications

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Analytical Chemistry".

Deadline for manuscript submissions: closed (1 May 2023) | Viewed by 4473

Special Issue Editors

Prof. Dr. Constantine D. Stalikas

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Guest Editor
Laboratory of Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece
Interests: carbon nanodots; analytical; biomedical
Special Issues, Collections and Topics in MDPI journals
Dr. Theodoros G. Chatzimitakos

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Guest Editor
Laboratory of Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece
Interests: nanomaterials; carbon-based nanomaterials; graphene; carbon nanodots; photoluminescent probes; sample preparation; analytical method development; metabolomics; toxicity; antibacterial activity
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent decades, nanomaterials have been at the forefront of analytical chemistry. Many innovative approaches have been developed, reaping their benefits. Lately, carbon nanodots (CNDs) have been introduced as novel carbon-based nanomaterials. Owing to their exceptional properties, they have been utilized for the development of a wide variety of applications, such as drug delivery, bioimaging, solar and photovoltaic cells, energy storage, etc. Their inherent photoluminescent properties, CNDs have been used in analytical chemistry, for the development of fast, selective, and sensitive probes/sensors. To this end, multiple studies have been published utilizing the fluorescence quenching of the CNDs, as an analytical signal for quantification purposes. However, more advanced systems have also been reported, such as OFF–ON and ratiometric systems. The above highlight the prospects of CNDs for the development of even more advanced analytical applications.

In this context, this Special Issue on “Carbon Nanodots for Analytical Applications” is dedicated to the advancement of this novel field. We invite authors to submit original research articles, communications, and reviews, related to analytical applications utilizing CNDs.

Prof. Dr. Constantine D. Stalikas
Dr. Theodoros G. Chatzimitakos
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. Molecules 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 2700 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 nanodots
  • photoluminescence
  • fluorescence quenching
  • analytical probes
  • sensors
  • ratiometric
  • bioimaging

Published Papers (2 papers)

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Research

15 pages, 2112 KiB  
Article
Layered Double Hydroxide/Graphene Quantum Dots as a New Sorbent for the Dispersive Solid-Phase Microextraction of Selected Benzophenones, Phenols, and Parabens
by Theodoros Chatzimitakos, Alkiviadis Vasilas and Constantine Stalikas
Molecules 2022, 27(23), 8388; https://doi.org/10.3390/molecules27238388 - 1 Dec 2022
Cited by 2 | Viewed by 1287
Abstract
In this study, the synthesis of a layered double hydroxide (LDH) composite with graphene quantum dots (GQDs) and its utilization for the development of a dispersive solid-phase extraction procedure are described. To this end, a carbonate-free Mg-Al LDH was synthesized. The development of [...] Read more.
In this study, the synthesis of a layered double hydroxide (LDH) composite with graphene quantum dots (GQDs) and its utilization for the development of a dispersive solid-phase extraction procedure are described. To this end, a carbonate-free Mg-Al LDH was synthesized. The development of the composite material made feasible the use of GQDs in a sample preparation procedure, while the incorporation of the GQDs in the LDH structure resulted in an 80% increase in extraction efficiency, compared to the bare LDH. As a proof of concept, the composite material was used for the development of an analytical method for the extraction, and preconcentration, of benzophenones, phenols, and parabens in lake water using high-performance liquid chromatography, coupled to a diode array detector. The analytical method exhibits low limits of quantification (0.10–1.33 μg L−1), good recoveries (92–100%), and satisfactory enrichment factors (169–186). Due to the abovementioned merits, the easy synthesis and simple extraction, the developed method can be used for the routine analysis of the target compounds. Full article
(This article belongs to the Special Issue Carbon Nanodots for Analytical Applications)
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17 pages, 6220 KiB  
Article
Sustainable and Green Synthesis of Waste-Biomass-Derived Carbon Dots for Parallel and Semi-Quantitative Visual Detection of Cr(VI) and Fe3+
by Lan Xia, Xiuju Li, Yuanhua Zhang, Kai Zhou, Long Yuan, Rui Shi, Kailian Zhang and Qifeng Fu
Molecules 2022, 27(4), 1258; https://doi.org/10.3390/molecules27041258 - 13 Feb 2022
Cited by 20 | Viewed by 2379
Abstract
Carbon dot (CD)-based multi-mode sensing has drawn much attention owing to its wider application range and higher availability compared with single-mode sensing. Herein, a simple and green methodology to construct a CD-based dual-mode fluorescent sensor from the waste biomass of flowers of wintersweet [...] Read more.
Carbon dot (CD)-based multi-mode sensing has drawn much attention owing to its wider application range and higher availability compared with single-mode sensing. Herein, a simple and green methodology to construct a CD-based dual-mode fluorescent sensor from the waste biomass of flowers of wintersweet (FW-CDs) for parallel and semi-quantitative visual detection of Cr(VI) and Fe3+ was firstly reported. The FW-CD fluorescent probe had a high sensitivity to Cr(VI) and Fe3+ with wide ranges of linearity from 0.1 to 60 µM and 0.05 to 100 µM along with low detection limits (LOD) of 0.07 µM and 0.15 µM, respectively. Accordingly, the FW-CD-based dual-mode sensor had an excellent parallel sensing capacity toward Cr(VI) and Fe3+ with high selectivity and strong anti-interference capability by co-using dual-functional integration and dual-masking strategies. The developed parallel sensing platform was successfully applied to Cr(VI) and Fe3+ quantitative detection in real samples with high precision and good recovery. More importantly, a novel FW-CD-based fluorescent hydrogel sensor was fabricated and first applied in the parallel and semi-quantitative visual detection of Cr(VI) and ferrous ions in industrial effluent and iron supplements, further demonstrating the significant advantage of parallel and visual sensing strategies. Full article
(This article belongs to the Special Issue Carbon Nanodots for Analytical Applications)
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