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Magnetochemistry
Special Issues
Photofunctional Molecular Magnets: Development and Their Potential Applications
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Photofunctional Molecular Magnets: Development and Their Potential Applications

A special issue of Magnetochemistry (ISSN 2312-7481). This special issue belongs to the section "Magnetic Materials".

Deadline for manuscript submissions: closed (20 June 2023) | Viewed by 6514

Special Issue Editors

Dr. Laura C. J. Pereira

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Guest Editor
C2TN, Center for Nuclear Sciences and Technologies, DECN, Department of Nuclear Sciences and Engineering, Instituto Superior Técnico, University Lisbon, P-2695-066 Bobadela LRS, Portugal
Interests: multifunctional and nanostructured materials; molecular magnetism; magnetic properties of materials; chemistry and physics of f-elements
Special Issues, Collections and Topics in MDPI journals
Dr. Bernardo Monteiro

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Guest Editor
Structural Chemistry Center (CQE), Department of Chemical Engineering, Instituto Superior Técnico, Lisbon University, 1049-001 Lisbon, Portugal
Interests: functionalization and characterization of hybrid materials; molecular magnetism; lanthanide chemistry; multifunctional materials; luminescence; supramolecular chemistry; environmental applications; optical sensors
Special Issues, Collections and Topics in MDPI journals
Dr. Cláudia Pereira

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Guest Editor
LAQV-REQUIMTE, Department of Chemistry, New University of Lisbon, 2829-516 Caparica, Portugal
Interests: lanthanide chemistry; optical sensors; dye sensitized solar cells; luminescence; photoconversion
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nowadays the development of functional molecular magnets is becoming one of the main challenges for chemists, physics, and materials researchers. Molecular magnetic materials are essentially based on molecular building blocks where their properties can be tuned/modulated from thousands of small variations that organic/inorganic ligands may present, giving rise to an incredibly rich structural diversity. In these materials, the transition metals or lanthanide ions provide the localized moment, and the ligands act as exchange pathways, changing the intermolecular interactions and allowing possible observation of physical properties other than magnetic by external stimuli, such as light, pressure, temperature, etc.

Among these materials, photofunctional magnets are gaining prominence, as photo-switching materials induce magnetic behavior or clearly show both magnetic and luminescence properties, which is the case of some lanthanide-based single-molecule magnets. Their excellent performances have shown great potential in applications such as high-density data storage, quantum computing, sensing, optical switches, biomedicine, etc.

This Special Issue of Magnetochemistry aims at publishing a collection of research contributions illustrating recent achievements in the development of molecular magnets where the presence of photofunctional properties can coexist, as well as their potential applications, namely in the topics listed below:

  • transition metal and lanthanide chemistry;
  • photofunctional molecular magnets;
  • photoswitching of single-molecule magnets;
  • lanthanide luminescent single-molecule magnets;
  • photo-switched spin-crossover complexes;
  • magnetochiral dichroism;
  • magnetic ionic liquids;
  • magnetic and optical sensors;
  • phototunable MOFs;
  • applications of photofunctional molecular materials

Dr. Laura Cristina de Jesus Pereira
Dr. Bernardo Monteiro
Dr. Cláudia Pereira
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. Magnetochemistry is an international peer-reviewed open access monthly 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

  • transition metal and lanthanide chemistry
  • photofunctional molecular magnets
  • photoswitching of single-molecule magnets
  • lanthanide luminescent single-molecule magnets
  • photo-switched spin-crossover complexes
  • magnetochiral dichroism
  • magnetic ionic liquids
  • magnetic and optical sensors
  • phototunable MOFs
  • applications of photofunctional molecular materials

Published Papers (2 papers)

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Research

19 pages, 2586 KiB  
Article
Correlation between Supramolecular Connectivity and Magnetic Behaviour of [FeIII(5-X-qsal)2]+-Based Salts Prone to Exhibit SCO Transition
by Bruno J. C. Vieira, Laura C. J. Pereira, Vasco da Gama, Isabel C. Santos, Ana C. Cerdeira and João C. Waerenborgh
Magnetochemistry 2022, 8(1), 1; https://0-doi-org.brum.beds.ac.uk/10.3390/magnetochemistry8010001 - 21 Dec 2021
Cited by 5 | Viewed by 2520
Abstract
We present an extensive study to determine the relationship between structural features of spin crossover (SCO) systems based on N-(8-quinolyl)salicylaldimine (qsal) ligand derivatives and their magnetic properties. Thirteen new compounds with general formula [FeIII(5-X-qsal)2]+ (X = H, F, [...] Read more.
We present an extensive study to determine the relationship between structural features of spin crossover (SCO) systems based on N-(8-quinolyl)salicylaldimine (qsal) ligand derivatives and their magnetic properties. Thirteen new compounds with general formula [FeIII(5-X-qsal)2]+ (X = H, F, Cl, Br and I) coupled to Cl−, ClO4−, SCN−, PF6−, BF4− and BPh4− anions were prepared and magnetically characterized. The structure/properties correlations observed in these compounds were compared to those of salts with the same [FeIII(qsal-X)2]+ cations previously reported in the literature. These cations favour the LS configuration in compounds with the weakest connectivity. As connectivity increases most of them present HS states at room temperature and structures may be described as arrangements of parallel layers of interacting cation dimers. All the compounds based on these cations undergoing complete SCO transitions within the 4–300 K temperature range have high intralayer connectivity. If, however, the interlayer connectivity becomes very strong they remain blocked in the HS or in the LS state. The SCO transition may be affected by the slightest change of solvent molecules content, disorder or even crystallinity of the sample and it remain difficult to predict which kind of ligand substituent should be selected to obtain compounds with the desired connectivity. Full article
(This article belongs to the Special Issue Photofunctional Molecular Magnets: Development and Their Potential Applications)
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19 pages, 7303 KiB  
Article
Exploring the Slow Magnetic Relaxation of a Family of Photoluminescent 3D Lanthanide–Organic Frameworks Based on Dicarboxylate Ligands
by Itziar Oyarzabal, Sara Rojas, Ana D. Parejo, Alfonso Salinas-Castillo, José Ángel García, José M. Seco, Javier Cepeda and Antonio Rodríguez-Diéguez
Magnetochemistry 2021, 7(3), 41; https://0-doi-org.brum.beds.ac.uk/10.3390/magnetochemistry7030041 - 16 Mar 2021
Viewed by 2832
Abstract
A family of metal–organic frameworks with general formula {[Nd2(ant)2((NH2)2-bdc)(DMF)4]·2DMF}n (1) and {[Ln2(ant)2((NH2)2-bdc)(DMF)4]·2DMF·2H2O}n (Ln = Tb (2 [...] Read more.
A family of metal–organic frameworks with general formula {[Nd2(ant)2((NH2)2-bdc)(DMF)4]·2DMF}n (1) and {[Ln2(ant)2((NH2)2-bdc)(DMF)4]·2DMF·2H2O}n (Ln = Tb (2), Ho (3), and Er (4)) has been obtained from reactions between 9,10-anthracenedicarboxylic (H2ant) and 2,5-diaminoterephthalic ((NH2)2-H2bdc) acids, and lanthanide ions in dimethylformamide (DMF). These lanthanide–organic frameworks (LnOFs) have been characterized, and their crystal structures have been elucidated by single crystal and powder X-ray diffraction methods (on the basis of a comparative refinement with similar structures), respectively for 1 and 2–4. All LnOFs present three-dimensional structures composed of dinuclear [Ln2(µ-CO2)4] entities linked through both carboxylate ligands that yield open frameworks in which DMF and water molecules are located in the channels. Magnetic studies of these LnOFs have revealed slow relaxation of the magnetization for the Nd-based counterpart. The compounds also acknowledge relevant photoluminescence (PL) emissions in the visible (for the Tb-based homologue) and near-infrared (for the Nd- and Er-based compounds) regions. The strong green emission yielded by compound 2 at room temperature allows its study for photoluminescence (PL) sensing of various solvent molecules, finding a particular discrimination for acetone. Full article
(This article belongs to the Special Issue Photofunctional Molecular Magnets: Development and Their Potential Applications)
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