Metal Coordination Complexes for Optical and Chiro-Optical Applications

A special issue of Crystals (ISSN 2073-4352).

Deadline for manuscript submissions: 15 June 2026 | Viewed by 772

Special Issue Editors


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Guest Editor
Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d’Alcontres 31, 98166 Messina, Italy
Interests: theoretical chemistry; chirality; computational chemistry; supramolecular chemistry

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Guest Editor
Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
Interests: supramolecular chemistry; X-ray; helicates; photochemistry; covalent dynamic chemistry
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Special Issue Information

Dear Colleagues,

In recent decades, the interference of metal coordination complexes with electromagnetic radiation has attracted burgeoning attention for potential optical and chiro-optical developments. This interaction is pivotal to numerous processes, including photochemistry, photocatalysis, and the design of novel materials for solar energy conversion, sensors, and molecular devices. Metal coordination architectures, which consist of metal ions bonded to various ligands, exhibit distinct electronic and magnetic properties that allow them to interact with light in ways that are not possible for simpler, isolated metal ions or organic molecules. When metal coordination complexes absorb light, the energy is typically transferred to the metal–ligand system, resulting in electronic transitions that can induce a variety of photophysical and photochemical phenomena. The nature of these events depends on several factors, including the electronic configuration of the metal center, the identity and geometry of the ligands, and the energy of the incident light. The present Special Issue will explore (both experimentally and computationally) the fundamental principles governing the interaction of light with metal coordination complexes, focusing on their photophysical properties, the nature of electronic transitions, and their applications in photochemistry, photocatalysis, photobiology, and photomedicine. Through this discussion, we aim to provide a deeper understanding of how these systems can be harnessed to develop advanced materials and technologies for a range of practical applications in the modern chemical and biomedical sectors.

Dr. Giovanni Bella
Dr. Antonio Santoro
Guest Editors

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Keywords

  • chirality
  • supramolecular chemistry
  • computational chemistry
  • metal coordination complexes
  • X-ray characterization

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Published Papers (1 paper)

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Research

9 pages, 1688 KB  
Article
Morphological Evolution of Nickel–Fullerene Thin Film Mixtures
by Giovanni Ceccio, Kazumasa Takahashi, Romana Mikšová, Yuto Kondo, Eva Štěpanovská, Josef Novák, Sebastiano Vasi and Jiří Vacik
Crystals 2026, 16(1), 73; https://doi.org/10.3390/cryst16010073 - 22 Jan 2026
Viewed by 360
Abstract
Hybrid systems consisting of metal–fullerene composites exhibit intriguing properties but often suffer from thermal instability. With proper control, such instability can be harnessed to enable the formation of sophisticated nanostructures with nanometric precision. These self-organization phenomena are not limited to thermal stimulation alone [...] Read more.
Hybrid systems consisting of metal–fullerene composites exhibit intriguing properties but often suffer from thermal instability. With proper control, such instability can be harnessed to enable the formation of sophisticated nanostructures with nanometric precision. These self-organization phenomena are not limited to thermal stimulation alone but can also be triggered by other external stimuli. In this work, we investigate the morphological evolution of thin films composed of evaporated C60 and sputtered nickel mixtures, focusing on how external stimuli influence both their structural and electrical properties. Thin films were prepared under controlled deposition conditions, and their surface morphology was analyzed using advanced characterization techniques. Progressive changes in film morphology were observed as a function of composition and external treatment, highlighting the interplay between metallic and molecular components. In particular, it was observed that, due to the annealing treatment, the sample undergoes strong phase separation, with the formation of structures tens of microns in diameter and an increase in electrical resistance, exhibiting insulating behavior. These findings provide insights into the mechanisms governing hybrid thin film formation and suggest potential applications in electronic, optoelectronic, and energy-related devices. Full article
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