Influence of solvent polarity and base concentration on the photochemistry of ketoprofen: independent singlet and triplet pathways
Literature Information
The photochemistry of ketoprofen in aqueous solutions is strongly influenced by its acid–base chemistry. While the acid form of ketoprofen behaves as a typical benzophenone chromophore, the ketoprofen carboxylate undergoes efficient photodecarboxylation involving a carbanion intermediate. In the present work we have conducted studies in organic solvent–water mixtures in attempts to establish the nature of the carbanion precursor. We find a dual photochemical behavior of ketoprofen depending on the protic state of the ground state absorbing species. The detection of both the ketoprofen triplet and the carbanion during the photolysis of ketoprofen in these mixtures, and the experimentally determined independence of both pathways indicates that the carbanion originates from the singlet state in the system under study.
Related Literature
Fe(AsO4): A new iron(iii) arsenate synthesized from thermal treatment of (NH4)[Fe(AsO4)F]
Begoña Bazán, José L. Mesa, José L. Pizarro, Andrés T. Aguayo, María I. Arriortua, Teófilo Rojo
DOI: 10.1039/B210998K
Photomediated asymmetric synthesis of (−)-cuparene
Richard S. Grainger, Aslam Patel
DOI: 10.1039/B300815K
Cooperative effects in the complexation of anions and Lewis bases by a heteronuclear bifunctional Lewis acid
James D. Hoefelmeyer, François P. Gabbaï
DOI: 10.1039/B212127A
High temperature synthesis of a noncentrosymmetric site-ordered cobalt aluminophosphate related to the pollucite structure
P. Bishop
DOI: 10.1039/B300037K
TEM stereo-imaging of mesoporous zeolite single crystals
Iver Schmidt, Anna Carlsson, Søren Dahl, Michael Brorson, Claus J. H. Jacobsen
DOI: 10.1039/B212646J
New thermally stable cationic η3-allyl(1,4-diphospha-(1,3)-butadiene)nickel complexes for ethylene polymerization
Alex Ionkin, William Marshall
DOI: 10.1039/B211252C
Understanding the building-up process of three dimensional open-framework metal phosphates: Acid degradation of the 3D structures to lower dimensional structures
Amitava Choudhury
DOI: 10.1039/B210037C
Asymmetric protonation of lithium enolates of α-amino acid derivatives with α-amino acid-based chiral Brønsted acids
Kentaro Futatsugi, Akira Yanagisawa, Hisashi Yamamoto
DOI: 10.1039/B211523A
The first NH aldimineorganometallic compound. Isolation and crystal structure
Joan Albert, J. Magali Cadena, Asensio González, Jaume Granell, Xavier Solans, Mercè Font-Bardia
DOI: 10.1039/B211808D
You might also like
What precautions should be taken when handling 4-(2-Furylmethyl)thiomorpholine 1,1-dioxide (CAS: 79206-94-3)?
When handling 4-(2-Furylmethyl)thiomorpholine 1,1-dioxide (CAS: 79206-94-3), it ...
What precautions should be taken when handling 4-Chloro-N-[2-(4-morpholinyl)ethyl]benzamide (CAS: 71320-77-9)?
When handling 4-Chloro-N-[2-(4-morpholinyl)ethyl]benzamide (CAS: 71320-77-9), it...
How should waste containing 2-[2-(2-Methoxyethoxy)ethoxy]ethyl 4-methylbenzenesulfonate (CAS: 62921-74-8) be handled?
Waste containing this compound (CAS: 62921-74-8) should be handled according to ...
How should waste containing (S)-Methyl 2-amino-3-cyclohexylpropanoate be handled?
Waste containing (S)-Methyl 2-amino-3-cyclohexylpropanoate should be collected i...
How is 5-({4-[(2S,4R)-4-Hydroxy-2-methyltetrahydro-2H-pyran-4-yl]-2-thienyl}sulfanyl)-1-methyl-1,3-dihydro-2H-indol-2-one (CAS: 166882-70-8) typically synthesized?
This compound can be synthesized using a multi-step process involving the conjug...
Are there alternatives to (2E)-3-(3,4-Dichlorophenyl)acrylic acid (CAS: 7312-27-8) in synthesis?
There are several alternatives to (2E)-3-(3,4-Dichlorophenyl)acrylic acid in syn...
How should Ethyl 6-(2-nitrophenyl)imidazo[2,1-b][1,3]thiazole-3-carboxylate (CAS: 925437-84-9) be stored?
Ethyl 6-(2-nitrophenyl)imidazo[2,1-b][1,3]thiazole-3-carboxylate (CAS: 925437-84...
How should waste containing 2-(1,3-Thiazol-2-yl)ethanamine (CAS: 18453-07-1) be handled?
Waste containing 2-(1,3-Thiazol-2-yl)ethanamine (CAS: 18453-07-1) should be coll...
How is Methyl 5-iodo-2-methylbenzoate (CAS: 103440-54-6) typically synthesized?
Methyl 5-iodo-2-methylbenzoate can be synthesized through the iodination of meth...
How is 5-Chloro[1,2,4]triazolo[1,5-a]pyridine (CAS: 1427399-34-5) typically synthesized?
5-Chloro[1,2,4]triazolo[1,5-a]pyridine is commonly synthesized via the condensat...
Source Journal
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.














![[4-Amino-2-(methylsulfanyl)-5-pyrimidinyl]methanol structure [4-Amino-2-(methylsulfanyl)-5-pyrimidinyl]methanol structure](https://static.chemtradehub.com/structs/588/588-36-3-fc73.webp)