Special Issue "Carbon Dot Sensors"

A special issue of Nanomaterials (ISSN 2079-4991).

Deadline for manuscript submissions: 10 July 2020.

Special Issue Editor

Prof. Dr. Joaquim Esteves da Silva
E-Mail Website
Guest Editor
Chemistry Research Unit (CIQUP), Faculty of Sciences ofUniversity of Porto (FCUP), Rua do Campo Alegre 687, 4169-007 Porto,Portugal
Interests: Luminescent nanomaterials/materials, Carbon based nanomaterials, Nanosensors, Environmental sustainability, Advanced environmental treatments, Natural bioactive molecules

Special Issue Information

Dear Colleagues,

In 2004, a new family of carbon nanomaterials, named carbon dots or carbon quantum dots, was identified in the purification of carbon nanotubes. Meanwhile, these nanomaterials have been shown to have excellent photophysical and photochemical properties, and low toxicity, and can be produced from renewable materials under sustainable conditions. Currently, on-going research is improving these features far beyond standard values, for example, in terms of their quantum yields, photo and thermal stability, reactivity, and selectivity. Carbon dots are becoming real alternatives to other luminescent nanomaterials in applications involving toxicity and natural resources sustainability issues, such as semiconductors quantum dots. Fluorescent, chemiluminescent, and upconversion fluorescent carbon nanomaterials have been reported. These properties confer an important role in analytical/bioanalytical sensing chemistry and imaging/bioimaging because extended linear concentration ranges, very low detection limits, and high selectivity are foreseen and have already been demonstrated. The present Special Issue is focused on the sensor design, preparation, and analytical applications of carbon dots.

Prof. Dr. Joaquim Esteves da Silva
Guest Editor

Manuscript Submission Information

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Keywords

  • Carbon dots
  • Carbon quantum dots
  • Chemical sensors
  • Biochemical sensors
  • Environmental sensors
  • Biological sensors
  • Clinical sensors
  • Bioimaging sensors
  • Chemiluminescent sensors
  • Upconversion carbon nanomaterial sensors.

Published Papers (1 paper)

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Research

Open AccessArticle
Porphin-Based Carbon Dots for “Turn Off–On” Phosphate Sensing and Cell Imaging
Nanomaterials 2020, 10(2), 326; https://doi.org/10.3390/nano10020326 - 14 Feb 2020
Abstract
Porphin-based carbon dots (denoted as PCDs) are prepared through a one-step hydrothermal method by using meso-tetra (4-carboxyphenyl) porphin (TCPP), citric acid, and ethanediamine as precursor. PCDs give rise to the optimal photoluminescence at λexem = 375/645 nm, exhibit an excitation-independent [...] Read more.
Porphin-based carbon dots (denoted as PCDs) are prepared through a one-step hydrothermal method by using meso-tetra (4-carboxyphenyl) porphin (TCPP), citric acid, and ethanediamine as precursor. PCDs give rise to the optimal photoluminescence at λexem = 375/645 nm, exhibit an excitation-independent property, excellent water solubility, and good biocompatibility, which provide red emission and avoid the autofluorescence as an efficient fluorescent imaging probe. On the other hand, when Eu3+ is added into PCDs, the carboxylate groups located on the surface of PCDs exhibit high affinity to Eu3+, resulting in the fluorescence of PCDs turning off via static quenching. In the presence of phosphate, owing to the strong coordination with Eu3+, the fluorescence of PCDs turns on. Based on this performance, a novel “turn off–on” phosphate sensing system is developed. The detection limit of this sensing system can attain 3.59 × 10−3 μmol L−1. This system has been utilized for the detection of phosphate in real samples successfully, which further demonstrates potential applications in biological diagnostic and environmental analysis. Full article
(This article belongs to the Special Issue Carbon Dot Sensors)
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