Functional Design, Optical Properties and Applications of Advanced Luminescent Nanomaterials

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanophotonics Materials and Devices".

Deadline for manuscript submissions: 5 September 2025 | Viewed by 1861

Special Issue Editors


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Guest Editor
Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, NSW 2007, Australia
Interests: biophotonics; upconverting nanomaterials; surface engineering; optics engineering; analytical chemistry; biomedical applications
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Guest Editor
Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai, China
Interests: nanomaterials; lanthanide nanoparticles; photosensitive materials; luminescence; bioimaging

Special Issue Information

Dear Colleagues,

Luminescent nanomaterials, characterized by their large surface areas and customizable composition and morphology, exhibit extraordinary optical properties that surpass those of their bulk counterparts. These unique attributes have propelled their use across a wide spectrum of applications including, but not limited to, fluorescent microscopy, super-resolution nanoscopy, single-particle tracking, nanoscale thermometry, and multimodal bioimaging. Further applications extend to photodynamic therapy, bio-detection, optogenetics, security labeling, photovoltaic energy conversion, data storage, optical devices, and 3D display technologies.

Advancements in the rational design, controlled synthesis, surface–interface engineering, and precise modulation of their optical characteristics are crucial for optimizing the performances of nanomaterials. Additionally, innovative wet-chemical and hybrid techniques are continually evolving, offering new ways to tailor the morphology and unlock novel optical properties of these materials, thus broadening their practical applications.

This Special Issue will showcase comprehensive research that highlights progress in the functional design, controlled synthesis, and novel applications of advanced luminescent nanomaterials. We welcome original research articles and reviews detailing recent advancements in and applications of these versatile materials. Potential topics include the following:

  • Synthesis, benefits, and applications of colloidal quantum dots;
  • Innovative designs and applications of lanthanide nanoparticles;
  • Developments in the synthesis and potential of carbon dots;
  • Progress in luminescent polymer dots and their applications;
  • Functional design and applications of luminescent hybrid nanomaterials.

Dr. Jiayan Liao
Dr. Qianqian Su
Guest Editors

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Keywords

  • luminescent nanomaterials
  • quantum dots
  • upconversion nanoparticles
  • carbon dots
  • polymer dots
  • hybrid nanomaterials
  • controlled synthesis
  • surface–interface engineering
  • optical properties
  • biomedical imaging
  • nanotechnology applications

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Published Papers (2 papers)

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Research

13 pages, 2757 KiB  
Article
Crystal Phase and Morphology Control for Enhanced Luminescence in K3GaF6:Er3+
by Yilin Guo, Xin Pan, Yidi Zhang, Ke Su, Rong-Jun Xie, Jiayan Liao, Lefu Mei and Libing Liao
Nanomaterials 2025, 15(4), 318; https://doi.org/10.3390/nano15040318 - 19 Feb 2025
Cited by 1 | Viewed by 507
Abstract
Upconversion luminescent materials (UCLMs) have garnered significant attention due to their broad potential applications in fields such as display technology, biological imaging, and optical sensing. However, optimizing crystal phase and morphology remains a challenge. This study systematically investigates the effects of phase transformation [...] Read more.
Upconversion luminescent materials (UCLMs) have garnered significant attention due to their broad potential applications in fields such as display technology, biological imaging, and optical sensing. However, optimizing crystal phase and morphology remains a challenge. This study systematically investigates the effects of phase transformation and morphology control on the upconversion luminescent properties of K3GaF6:Er3+. By comparing different synthesis methods, we found that the hydrothermal method effectively facilitated the transformation of the NaxK3-xGaF6 crystal phase from cubic to monoclinic, with Na+/K+ ions playing a key role in the preparation process. Furthermore, the hydrothermal method significantly optimized the particle morphology, resulting in the formation of uniform octahedral structures. The 657 nm red emission intensity of the monoclinic phase sample doped with Er3+ was enhanced by 30 times compared to that of the cubic phase, clearly demonstrating the crucial role of phase transformation in luminescent performance. This study emphasizes the synergistic optimization of crystal phase and morphology through phase engineering, which substantially improves the upconversion luminescence efficiency of K3GaF6:Er3+, paving the way for further advancements in the design of efficient upconversion materials. Full article
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15 pages, 3593 KiB  
Article
Enhancing the Fluorescence and Antimicrobial Performance of Carbon Dots via Hypochlorite Treatment
by Spyridon Gavalas, Mohammed S. Beg, Ella N. Gibbons and Antonios Kelarakis
Nanomaterials 2025, 15(3), 184; https://doi.org/10.3390/nano15030184 - 24 Jan 2025
Viewed by 891
Abstract
This paper presents a simple, post-synthesis treatment of carbon dots (C-dots) that relies on the oxidizing activity of sodium hypochlorite to induce surface oxidation, etching and pronounced structural rearrangements. The thus treated C-dots (ox-C-dots) exhibit up to six-fold enhancement in quantum yield compared [...] Read more.
This paper presents a simple, post-synthesis treatment of carbon dots (C-dots) that relies on the oxidizing activity of sodium hypochlorite to induce surface oxidation, etching and pronounced structural rearrangements. The thus treated C-dots (ox-C-dots) exhibit up to six-fold enhancement in quantum yield compared to non-oxidised analogues, while maintaining low levels of cytotoxicity against HeLa and U87 cell lines. In addition, we demonstrate that a range of polymeric materials (polyurethane sponge, polyvinylidene fluoride membrane, polyester fabric) impregnated with ox-C-dots show advanced antifungal properties against Talaromyces pinophilus, while their untreated counterparts fail to do so. Full article
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