With the NCN reporting period nearing, we would appreciate it if you could send your data for review with sufficient lead time. Unfortunately, we will not be able to guarantee priority processing for all datasets received at once.
If you don't see your institution, add your dataset to the main dataverse named "RepOD".
Select the dataverse to which you want to add the new dataset:
You need to Sign In/Sign Up to add a dataset.
Share this dataset on your favorite social media networks.
Gorski, Aleksander, 2025, "Enhancing photostability by thermodynamic and kinetic factors: free-base and palladium meso-aryl-octaethylporphyrins", https://doi.org/10.18150/H7WWLH, RepOD, V2
Learn about Data Citation Standards.
The collection of experimental data used for the preparation of the manuscript includes:
Abstract
Photostability is a crucial parameter in applications based on light-matter interactions. In this work, we demonstrate that photodegradation efficiency can be strongly decreased by altering thermodynamic and kinetic characteristics of a chromophore. Photobleaching quantum yields have been determined for a series of free-base octaethylporphyrins and their palladium metallocomplexes gradually substituted by phenyl groups at the meso positions. Due to increased oxidation potential of palladium porphyrins, photostability is improved in comparison with zinc or magnesium derivatives. A spectacular effect is observed for nonplanar palladium derivatives in which the triplet lifetime in deoxygenated solution is shortened by three orders of magnitude with respect to planar porphyrins. Comparison of photodestruction efficiencies in oxygen-containing and degassed toluene samples shows a hundred-fold decrease of photobleaching quantum yields for nonplanar palladium porphyrins, reaching an extremely low value of less than 10-9. In contrast, free-base, non-planar porphyrins are less stable than the planar analogues in non-degassed toluene. Finally, planar free-base and palladium porphyrins become significantly less photostable in the degassed solution, because the triplet decay time increases by three orders of magnitude compared to oxygen-containing samples.
porphyrins, photodegradation, photostability, photooxidation, singlet oxygen
Maciej Banaszek, Barbara Golec, Renata Rybakiewicz-Sekita, Jarosław Kowalski, Piotr Szczodry, Natalia Dutkiewicz, Jacek Waluk, Aleksander Gorski Enhancing Photostability by Thermodynamic and Kinetic Factors: Free-Base and Palladium meso-Aryl-octaethylporphyrins, J. Phys. Chem. B 2025, 129, 22, 5491–5500 https://doi.org/10.1021/acs.jpcb.5c02423 doi: 10.1021/acs.jpcb.5c02423
CC BY - Creative Commons Attribution 4.0
Please select a file or files to be deleted.
The file(s) will be deleted after you click on the Delete button.
Files will not be removed from previously published versions of the dataset.
Please select a file or files to be edited.
For selected file(s) set a license to
Please select a file or files to be downloaded.
Please select a file or files for access request.
Please select restricted file(s) to be unrestricted.
You need to Log In/Sign Up to request access to this file.
Please confirm and/or complete the information needed below in order to continue.
Asterisks indicate required fields
Access to file(s) subject to additional consent under following conditions:
The restricted file(s) selected may not be downloaded because you have not been granted access.
Click Continue to download the files you have access to download.
Are you sure you want to delete this dataset and all of its files? You cannot undelete this dataset.
Are you sure you want to lift the embargo?
Once you lift the embargo, you will not be able to set it again.
Are you sure you want to delete this draft version? Files will be reverted to the most recently published version. You cannot undelete this draft.
Use a Anonymized Private URL to allow those without Dataverse accounts to access your dataset. For more information about the Private URL feature, please refer to the User Guide.
Private URL has not been created.
"WARNING. This dataset has at least one published version. Those who have access to the Anonymized Private URL for this dataset may be able to use its accessible metadata to look up the full, not anonymized version of this dataset.
Are you sure you want to disable the Private URL? If you have shared the Private URL with others they will no longer be able to use it to access your dataset.
Use a Private URL to allow those without Dataverse accounts to access your dataset. For more information about the Private URL feature, please refer to the User Guide.
You will not be able to make changes to this dataset while it is in review.
This dataset cannot be published until Institute of Physical Chemistry PAS is published. Would you like to publish both right now?
Once you publish this dataset it must remain published.
Are you sure you want to republish this dataset?
Select if this is a minor or major version update.
This dataset cannot be published until Institute of Physical Chemistry PAS is published by its administrator.
This dataset cannot be published until Institute of Physical Chemistry PAS and RepOD are published.
Are you sure you want to deaccession? The selected version(s) will no longer be viewable by the public.
Please fill this out to prove you are not a robot.
