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Organic Luminescent Materials
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Organic Luminescent Materials

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

Deadline for manuscript submissions: closed (20 April 2022) | Viewed by 5970

Special Issue Editor

Dr. Samuel Guieu

E-Mail Website
Guest Editor
LAQV/REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
Interests: organic synthesis; dyes; luminescence; crystals; supramolecular interactions
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Luminescent materials are increasingly attractive, fundamentally for their beauty and intriguing features and practically for their potential applications in devices and probes. Organic luminescent materials have become valuable alternatives to inorganic luminophores but are still rare, because most organic chromophores suffer a dramatic quenching of their emission when they pass from dilute solutions to concentrated solutions or to solid states. On the other hand, some organic chromophores present different photophysical properties between the dilute solution and the solid state.

This Special Issue will be focused on the properties and applications of organic luminescent materials made of small chromophores, especially when taking advantage of the intermolecular/supramolecular interactions present in the solid state. Organic luminophores dispersed into a solid matrix will not be included, but solid mixtures of different luminophores will be contemplated.

This Special Issue will cover the following topics, without being limited to them:

  • Supramolecular interactions of dyes;
  • Aggregation-induced emission and aggregation-induced emission enhancement;
  • J- and H-aggregates;
  • Heavy atom effect;
  • Excited-state intramolecular proton transfer;
  • Applications of organic luminescent materials in OLEDs, sensors, probes, responsive materials, and other emissive devices.

We look forward to receiving your submissions for this Special Issue. Full papers, short communications, and reviews are all welcome.

Dr. Samuel Guieu
Guest Editor

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

  • organic luminophores
  • solid state
  • aggregation-induced emission
  • J- and H-aggregates
  • supramolecular interactions

Published Papers (2 papers)

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Research

11 pages, 2410 KiB  
Article
Photoluminescent Gold/BSA Nanoclusters (AuNC@BSA) as Sensors for Red-Fluorescence Detection of Mycotoxins
by Ivana Fabijanić, Marta Jurković, Daniela Jakšić and Ivo Piantanida
Materials 2022, 15(23), 8448; https://doi.org/10.3390/ma15238448 - 27 Nov 2022
Cited by 4 | Viewed by 2077
Abstract
The BSA-encapsulated gold nanoclusters (AuNC@BSA) have drawn considerable interest and demonstrated applications as biological sensors. In this study, we demonstrated that the red-emitting AuNC@BSA prepared using a modified procedure fully retained the binding of standard BSA-ligands (small molecule drugs), significantly improving fluorescence detection [...] Read more.
The BSA-encapsulated gold nanoclusters (AuNC@BSA) have drawn considerable interest and demonstrated applications as biological sensors. In this study, we demonstrated that the red-emitting AuNC@BSA prepared using a modified procedure fully retained the binding of standard BSA-ligands (small molecule drugs), significantly improving fluorescence detection in some cases due to the red-emission property. Further, we showed that AuNC@BSA efficiently bind a series of aflatoxin-related mycotoxins as well as the aliphatic mycotoxin FB1, reporting interactions in the nanomolar range by instantaneous emission change at 680 nm. Such red emission detection is advantageous over current detection strategies for the same mycotoxins, based on complex mass spectrometry procedures or, eventually (upon chemical modification of the mycotoxin), by fluorescence detection in the UV range (<400 nm). The later technique yields fluorescence strongly overlapping with the intrinsic absorption and emission of biorelevant mixtures in which mycotoxins appear. Thus, here we present a new approach using the AuNC@BSA red fluorescence reporter for mycotoxins as a fast, cheap, and simple detection technique that offers significant advantages over currently available methods. Full article
(This article belongs to the Special Issue Organic Luminescent Materials)
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11 pages, 14234 KiB  
Article
Benzimidazole-Based N,O Boron Complexes as Deep Blue Solid-State Fluorophores
by Patrícia A. A. M. Vaz, João Rocha, Artur M. S. Silva and Samuel Guieu
Materials 2021, 14(15), 4298; https://doi.org/10.3390/ma14154298 - 31 Jul 2021
Cited by 9 | Viewed by 2279
Abstract
Benzimidazole-based boranils were designed and synthesized in order to assess the influence of halogen substituents on their optoelectronic properties. All compounds are photoluminescent in solution and solid state. Compared to the free ligands, the new boranils emit at a lower wavelength, by elimination [...] Read more.
Benzimidazole-based boranils were designed and synthesized in order to assess the influence of halogen substituents on their optoelectronic properties. All compounds are photoluminescent in solution and solid state. Compared to the free ligands, the new boranils emit at a lower wavelength, by elimination of the excited-state intramolecular proton transfer observed with the ligands. In the solid state, some of the boranils exhibit a deep blue emission, presenting Commission Internationale de l’Éclairage (CIE) coordinates with an x-component of less than 0.16 and a y-component smaller than 0.04, highly desired values for the development of blue emitting materials. Full article
(This article belongs to the Special Issue Organic Luminescent Materials)
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