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Feature Papers in Photochemistry and Photocatalysis—2nd Edition
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Feature Papers in Photochemistry and Photocatalysis—2nd Edition

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Photochemistry".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 826

Special Issue Editor

Prof. Dr. Barbara Bonelli

E-Mail Website
Guest Editor
Department of Applied Science and Technology and PoliTO BiomED Interdepartmental Lab, Politecnico di Torino; INSTM Unit of Torino—Politecnico, 10129 Torino, Italy
Interests: surface properties of materials; nanoporous materials; TiO2 modification; photocatalysis; emerging pollutants’ removal; IR spectroscopy; CO2 reduction
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are pleased to announce an upcoming Special Issue of Molecules entitled “Feature Papers in Photochemistry and Photocatalysis—2nd Edition”. This issue will constitute a collection of important high-quality papers (original research articles or comprehensive reviews) and will be published in an open access format to host the work of Editorial Board Members or prominent scholars invited by the Editorial Office and the Guest Editors. We aim to gather state-of-the-art or new cutting-edge developments, covering all kinds of topics in the field of photochemistry and photocatalysis through the production of selected works in the hope of making outstanding contributions to the community. This issue will be a forum for disseminating excellent research findings and sharing innovative ideas in the field.

Prof. Dr. Barbara Bonelli
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. Molecules 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 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

  • photocatalytic processes
  • quantum yield
  • solar light
  • upconversion
  • heterojunctions

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Published Papers (3 papers)

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Research

16 pages, 1376 KiB  
Article
New Visible-Light-Sensitive Dicyanocoumarin- and COUPY-Based Caging Groups with Improved Photolytic Efficiency
by Marta López-Corrales and Vicente Marchán
Molecules 2025, 30(10), 2158; https://doi.org/10.3390/molecules30102158 - 14 May 2025
Abstract
Photolabile protecting groups (PPGs), also known as caging groups, are valuable tools in photopharmacology. They enable precise control over the release of bioactive compounds from the corresponding caged compounds at a precisely controlled time and place using light of specific wavelengths. This study [...] Read more.
Photolabile protecting groups (PPGs), also known as caging groups, are valuable tools in photopharmacology. They enable precise control over the release of bioactive compounds from the corresponding caged compounds at a precisely controlled time and place using light of specific wavelengths. This study introduces a novel approach to fine-tuning the photophysical and photochemical properties of visible-light-sensitive dicyanocoumarin- and COUPY-based caging groups by incorporating a phenyl group in a position adjacent to the photolabile bond. Our photoactivation studies with visible light demonstrated that this structural modification slightly improved the photolytic efficiency of both dicyanocoumarin- and COUPY-caged model compounds compared to their methyl-substituted or unsubstituted counterparts. Furthermore, COUPY PPGs were efficiently photoactivated with red light (620 nm) and successfully used to cage two antitumor drugs, chlorambucil and 4-phenylbutyric acid. These findings highlight the potential of phenyl-containing caging groups based on dicyanocoumarin and COUPY scaffolds as versatile platforms for developing new light-activated tools for photopharmacology applications. Full article
(This article belongs to the Special Issue Feature Papers in Photochemistry and Photocatalysis—2nd Edition)
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11 pages, 1934 KiB  
Article
Self-Assembling Peptide–Co-PPIX Complex Catalyzes Photocatalytic Hydrogen Evolution and Forms Hydrogels
by Nicholas Ryan Halloran, Abesh Banerjee and Giovanna Ghirlanda
Molecules 2025, 30(8), 1707; https://doi.org/10.3390/molecules30081707 - 10 Apr 2025
Viewed by 310
Abstract
The sustainable production of carbon-free fuels such as hydrogen is an important goal in the search for alternative energy sources. Herein, we report a peptide-based system for light-driven hydrogen evolution from water under neutral conditions. The M1 peptide is an ABC triblock polymer [...] Read more.
The sustainable production of carbon-free fuels such as hydrogen is an important goal in the search for alternative energy sources. Herein, we report a peptide-based system for light-driven hydrogen evolution from water under neutral conditions. The M1 peptide is an ABC triblock polymer featuring two coiled-coil alpha-helical regions flanking a water-soluble, polyanionic, intrinsically disordered region. M1 formed a hydrogel at high concentrations upon binding to cobalt protoporphyrin IX. This process is driven by the terminal regions, which coordinate the metalloporphyrin through histidine residues and form helical oligomers interconnected by flexible, intrinsically disordered regions, resulting in network formation. Co-M1 catalyzes hydrogen production upon irradiation in the presence of a photosensitizer and a sacrificial electron donor; the activity of Co-M1 is eight times higher than that of free Co-PPIX. Full article
(This article belongs to the Special Issue Feature Papers in Photochemistry and Photocatalysis—2nd Edition)
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14 pages, 1747 KiB  
Article
Effect of the Substitution of the Mesityl Group with Other Bulky Substituents on the Luminescence Performance of [Pt(1,3-bis(4-Mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl]
by Giulia De Soricellis, Véronique Guerchais, Alessia Colombo, Claudia Dragonetti, Francesco Fagnani, Dominique Roberto and Daniele Marinotto
Molecules 2025, 30(7), 1498; https://doi.org/10.3390/molecules30071498 - 27 Mar 2025
Viewed by 242
Abstract
The synthesis and characterization of two new complexes, namely [Pt(bis(4-(4-(tert-butyl)phenyl)-pyridin-2-yl)-4,6-difluorobenzene)Cl] and [Pt(bis(4-(3,5-di-tert-butylphenyl)-pyridin-2-yl)-4,6-difluorobenzene)Cl], are reported. Both are highly luminescent in the blue region (Φlum = 0.89–0.95 at 478–480 nm), like the parent complex [Pt(1,3-bis(4-mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl] in degassed diluted dichloromethane solution. An increase in concentration leads [...] Read more.
The synthesis and characterization of two new complexes, namely [Pt(bis(4-(4-(tert-butyl)phenyl)-pyridin-2-yl)-4,6-difluorobenzene)Cl] and [Pt(bis(4-(3,5-di-tert-butylphenyl)-pyridin-2-yl)-4,6-difluorobenzene)Cl], are reported. Both are highly luminescent in the blue region (Φlum = 0.89–0.95 at 478–480 nm), like the parent complex [Pt(1,3-bis(4-mesityl-pyridin-2-yl)-4,6-difluoro-benzene)Cl] in degassed diluted dichloromethane solution. An increase in concentration leads to the formation of bi-molecular emissive excited states, as evidenced by a growing structureless band that peaked at 690–697 nm. This formation is more facile for the complex with one tert-butyl group in para of the phenyl group. It appears that the introduction of two tert-butyls in positions 3 and 5 of the phenyl group hampers the neighboring of the monomeric species, although less efficiently than the introduction of methyls in positions 2 and 6. Full article
(This article belongs to the Special Issue Feature Papers in Photochemistry and Photocatalysis—2nd Edition)
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