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Photochem
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Selected Papers from the 1st International Online Conference on Photochemistry...
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Selected Papers from the 1st International Online Conference on Photochemistry (IOCPC 2026)

A Special Issue of Photochem (ISSN 2673-7256).

Deadline for manuscript submissions: 30 November 2026 | Viewed by 1495

Editors

Prof. Dr. Detlef W. Bahnemann

E-Mail Website1 Website2
Guest Editor
1. Institute for Technical Chemistry, Leibniz University Hannover, 30167 Hannover, Germany
2. Laboratory of Photoactive Nanocomposite Materials, Saint-Petersburg State University, Ulyanovskaya Str. 1, Peterhof, 198504 Saint-Petersburg, Russia
Interests: photocatalysis; self-cleaning; super hydrophilic; antibacterial surfaces; metal and semiconductor particles; nanocrystalline transparent coatings; functional test according to DIN; CEN and ISO
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Dirk Poelman

E-Mail Website
Guest Editor
Lumilab, Department of Solid State Sciences, Ghent University, Krijgslaan 285-S1, B-9000 Gent, Belgium
Interests: lighting, vision, and luminescence, displays; thin film optics; photocatalysis; medical imaging; structural characterization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The 1st International Online Conference on Photochemistry (IOCPC 2026) will be held on 8–9 April 2026. In line with our commitment to fostering collaboration and knowledge exchange, this electronic conference provides a unique platform for researchers to showcase their work, discuss groundbreaking findings, and engage in meaningful conversations with fellow experts.

This Special Issue welcomes submissions from IOCPC 2026 that promote and advance the development of the photochemistry field. More specifically, the following areas will be covered:

  • Photocatalysis
  • Photochemistry for Environmental Remediation
  • Photocatalytic Energy Conversion
  • Photodynamic and Photothermal Therapy
  • Photoluminescent Materials

Contributions will undergo peer review; upon acceptance, submissions will be published, with the aim of rapidly and widely disseminating research results, developments, and applications.

For more information on the 1st International Online Conference on Photochemistry (IOCPC 2026), please go to https://sciforum.net/event/IOCPC2026.

Prof. Dr. Detlef W. Bahnemann
Prof. Dr. Dirk Poelman
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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photochem is an international peer-reviewed open access quarterly 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 1200 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

  • photocatalysis
  • photochemistry for environmental remediation
  • photocatalytic energy conversion
  • photodynamic and photothermal therapy
  • photoluminescent materials

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Published Papers (1 paper)

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18 pages, 8363 KB  
Article
Electronically Controlled Conformational Equilibria in Symmetrically Substituted 3,7,10-Triarylphenothiazines: Tuning Redox and Emission Properties
by Laura Mayer and Thomas J. J. Müller
Photochem 2026, 6(3), 30; https://doi.org/10.3390/photochem6030030 - 17 Aug 2026
Viewed by 200
Abstract
The combination of Suzuki arylation and Buchwald–Hartwig amination provides a sequentially Pd-catalyzed pseudo-four-component strategy for the synthesis of symmetrically substituted 3,7,10-triarylphenothiazines in moderate to good yields. Using p-anisyl-derived donor units and p-benzonitrile-derived acceptor units, the electronic and photophysical properties of four [...] Read more.
The combination of Suzuki arylation and Buchwald–Hartwig amination provides a sequentially Pd-catalyzed pseudo-four-component strategy for the synthesis of symmetrically substituted 3,7,10-triarylphenothiazines in moderate to good yields. Using p-anisyl-derived donor units and p-benzonitrile-derived acceptor units, the electronic and photophysical properties of four representative derivatives were investigated by cyclic voltammetry, absorption and emission spectroscopy, and (TD-)DFT calculations. The calculated electronic transitions are in good agreement with the experimental absorption spectra and enable assignment of the underlying optical transitions, while the observed photophysical behavior is interpreted in the context of previous studies on related 3,10-diarylphenothiazines. A p-anisyl donor substituent at the phenothiazine nitrogen atom favors the intra-oriented ground-state conformation, resulting in intense low-energy absorption bands and high fluorescence quantum yields. In contrast, a p-benzonitrile substituent at this position shifts the conformational equilibrium toward the extra-oriented conformation, leading to altered electronic transitions and reduced fluorescence efficiency. Combined with p-anisyl donor units at the 3,7-positions, the extra-oriented conformation becomes predominant, resulting in pronounced emission quenching. These findings demonstrate that 3,7,10-triarylphenothiazines represent a class of redox-active luminophores in which electronic substitution and conformational preferences provide complementary handles for tuning ground- and excited-state properties. Full article
(This article belongs to the Special Issue Selected Papers from the 1st International Online Conference on Photochemistry (IOCPC 2026))
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