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Recent Progress of Organic Photochemistry
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Recent Progress of Organic Photochemistry

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

Deadline for manuscript submissions: closed (31 August 2024) | Viewed by 2941

Special Issue Editors

Dr. Magdalena Sałdyka

E-Mail Website
Guest Editor
Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
Interests: photochemistry; molecular interactions; conformational analysis; matrix isolation technique; theoretical modelling of molecular interactions and spectroscopic properties; infrared spectroscopy as a basic tool in molecular structure determination; spectroscopic analytical analysis
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Aleksander Filarowski

E-Mail Website
Guest Editor
Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie Str., 50-383 Wrocław, Poland
Interests: hydrogen bond; proton transfer; tautomeric and conformational equilibrium; solvatochromism; isotopic effect; Schiff and Mannich bases; BODIPY dye; IR; NMR; DFT; TD-DFT

Special Issue Information

Dear Colleagues,

It is our pleasure to invite you to submit an article to the upcoming Special Issue of Molecules on the theme of “Recent Progress of Organic Photochemistry”.

Organic photochemistry is a broad and interdisciplinary topic, covering the fields of chemical physics, molecular spectroscopy, physical organic chemistry, synthetic organic chemistry, computational organic chemistry, and supramolecular organic chemistry. Different domains of photochemistry and photophysics are receiving more attention and support from both governmental and industrial contractors and offer the potential to master the key technologies for the development and production of new materials and to generate new environmentally friendly processes. Photochemistry comprises a variety of domains in which compounds are used for their properties (e.g., fluorescence, phosphorescence, photochromism, energy transfer) or for their photochemical reactivity (e.g., hemolysis, heterolysis, electron transfer) in the preparation of chemical compounds, materials and products. The same techniques can be used to degrade organic compounds. Highly developed spectroscopic methods, including time-resolved spectroscopy, allow scientists in the field of photochemistry to describe photophysical process in full detail and also to predict photochemical reactivity by the application of theoretical methods.

This Special Issue of Molecules is focused on recent progress in organic photochemistry. Contributions that describe any molecular aspects of organic photochemistry are welcome, including the design of photochemical reactions and the development of methodology. Manuscripts describing original research, perspectives, reviews will be considered for publication in this Special Issue.

Dr. Magdalena Sałdyka
Prof. Dr. Aleksander Filarowski
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. 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

  • photochemical rearrangements
  • photoreduction
  • photooxidation
  • photooxygenation
  • photocatalysis
  • photocycloadditions
  • photochemical electron transfer

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (4 papers)

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Research

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13 pages, 1904 KiB  
Article
Synthesis and Properties of Dibenzo-Fused Naphtho[2,3-b:6,7-b′]disilole and Naphtho[2,3-b:6,7-b′]diphosphole
by Suzuho Morishita, Chikara Hayasaka, Keiichi Noguchi and Koji Nakano
Molecules 2024, 29(18), 4313; https://doi.org/10.3390/molecules29184313 - 11 Sep 2024
Viewed by 368
Abstract
Silole- and phosphole-containing polycyclic aromatic compounds have attracted significant attention in the field of organic functional materials. The structure of the aromatic units has great impact on the photophysical properties of the resulting silole- and phosphole-containing polycyclic aromatic compounds. Here, dibenzo-fused naphtho[2,3-b [...] Read more.
Silole- and phosphole-containing polycyclic aromatic compounds have attracted significant attention in the field of organic functional materials. The structure of the aromatic units has great impact on the photophysical properties of the resulting silole- and phosphole-containing polycyclic aromatic compounds. Here, dibenzo-fused naphtho[2,3-b:6,7-b′]disilole (NDS) and naphtho[2,3-b:6,7-b′]diphosphole (NDP), where a naphthalene unit is arranged between two silole and phosphole units, respectively, were designed and synthesized. The solid-state structures of them were confirmed by X-ray crystallographic analysis. The photophysical properties were evaluated by UV−vis absorption and photoluminescence spectroscopies and compared with those of their related compounds, such as dibenzo-fused silolo[3,2-b]silole and benzo[1,2-b:4,5-b′]disilole, ever reported. The longest wavelength absorption band of a series of silole-fused compounds was found to be red-shifted in the order benzo[1,2-b:4,5-b′]disilole < NDS < silolo[3,2-b]silole derivatives. For a series of phosphole-fused compounds, π-extension from phospholo[3,2-b]phosphole to NDP derivatives induces the lower absorption coefficient of the longest wavelength absorption band and the red-shift of the second longest wavelength absorption band. Both NDS and NDP exhibit much lower fluorescence quantum yields than their related compounds. Full article
(This article belongs to the Special Issue Recent Progress of Organic Photochemistry)
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12 pages, 2367 KiB  
Article
Methane Formation Induced via Face-to-Face Orientation of Cyclic Fe Porphyrin Dimer in Photocatalytic CO2 Reduction
by Yusuke Kuramochi, Masaya Hashimoto and Akiharu Satake
Molecules 2024, 29(11), 2453; https://doi.org/10.3390/molecules29112453 - 23 May 2024
Viewed by 780
Abstract
Iron porphyrins are known to provide CH4 as an eight-electron reduction product of CO2 in a photochemical reaction. However, there are still some aspects of the reaction mechanism that remain unclear. In this study, we synthesized iron porphyrin dimers and carried [...] Read more.
Iron porphyrins are known to provide CH4 as an eight-electron reduction product of CO2 in a photochemical reaction. However, there are still some aspects of the reaction mechanism that remain unclear. In this study, we synthesized iron porphyrin dimers and carried out the photochemical CO2 reduction reactions in N,N-dimethylacetamide (DMA) containing a photosensitizer in the presence of 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole (BIH) as an electron donor. We found that, despite a low catalytic turnover number, CH4 was produced only when these porphyrins were facing each other. The close proximity of the cyclic dimers, distinguishing them from a linear Fe porphyrin dimer and monomers, induced multi-electron CO2 reduction, emphasizing the unique role of their structural arrangement in CH4 formation. Full article
(This article belongs to the Special Issue Recent Progress of Organic Photochemistry)
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18 pages, 4330 KiB  
Article
UV Laser-Induced Photodecomposition of Matrix-Isolated Salicylhydroxamic Acid: Identification of New Isocyanate Complexes
by Magdalena Sałdyka and Zofia Mielke
Molecules 2024, 29(4), 862; https://doi.org/10.3390/molecules29040862 - 15 Feb 2024
Viewed by 782
Abstract
Photochemical reactions of salicylhydroxamic acid were induced using tunable UV laser radiation followed by FTIR spectroscopy. Four pairs of co-products were experimentally found to appear in the photolysis: C6H4(OH)NCO⋯H2O (1), C6H4(OH)C(O)N⋯H2O [...] Read more.
Photochemical reactions of salicylhydroxamic acid were induced using tunable UV laser radiation followed by FTIR spectroscopy. Four pairs of co-products were experimentally found to appear in the photolysis: C6H4(OH)NCO⋯H2O (1), C6H4(OH)C(O)N⋯H2O (2), C6H4(OH)2⋯HNCO (3), and C6H4(OH)NHOH⋯CO (4). The comparison of the theoretical spectra with the experimental ones allowed us to determine the structures of the complexes formed in the matrices. The mechanisms of the reaction channels leading to the formation of the photoproducts were proposed. It was concluded that the first step in the formation of the complexes (1), (2), and (3) was the scission of the N-O bond, whereas the creation of complex (4) was due to cleavage of the C-N bond. Full article
(This article belongs to the Special Issue Recent Progress of Organic Photochemistry)
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Review

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32 pages, 7058 KiB  
Review
Recent Developments in Photoinduced Decarboxylative Acylation of α-Keto Acids
by Shuaiqi Lu, Yilong Xiang, Jingfu Chen and Chao Shu
Molecules 2024, 29(16), 3904; https://doi.org/10.3390/molecules29163904 - 18 Aug 2024
Viewed by 594
Abstract
Ketones are ubiquitous patterns found in various biological molecules and natural products. In recent years, a number of acylation methods have been developed based on the use of α-oxocarboxylic acids as acyl-transfer reagents, with particular emphasis on the photoinduced decarboxylative acylation of α [...] Read more.
Ketones are ubiquitous patterns found in various biological molecules and natural products. In recent years, a number of acylation methods have been developed based on the use of α-oxocarboxylic acids as acyl-transfer reagents, with particular emphasis on the photoinduced decarboxylative acylation of α-keto acids. This review focuses on the latest advancements in acylation methodologies through the decarboxylation of α-keto acids over the past several years, highlighting their product diversity, selectivity, and applicability. Where possible, the mechanistic rationale is presented, providing a positive outlook for the promising future of this field. Full article
(This article belongs to the Special Issue Recent Progress of Organic Photochemistry)
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