Wavelength-dependent photochemistry of a salicylimine derivative studied with cryogenic and ultrafast spectroscopy approaches
Literature Information
Kevin Artmann, Corina H. Pollok, Christian Merten, Patrick Nuernberger
Salicylimines are versatile compounds in which an excited-state intramolecular proton transfer and torsional motions may set in upon photoexcitation. Here, we study N-(α-phenylethyl)salicylimine (PESA) to elucidate how the photochemical reaction pathways depend on the excitation wavelength and to what extent the relative photoproduct distribution can be steered towards a desired species. DFT structure and potential energy calculations disclose that the most stable ground-state conformer is an enol species and that the photodynamics may proceed differently depending on the excited state that is reached. With matrix isolation infrared spectroscopy, the predominance of the enol conformer of PESA is confirmed. Illumination of the cryogenic sample with different wavelengths shifts the ratio of enol and keto products, and by sequential irradiation a selective re- and depopulation is possible. Femtosecond transient absorption spectroscopy further reveals that also at room temperature, the outcome of the photoreaction depends on excitation wavelength, and in combination with the calculations, it can be rationalized that the decisive step occurs within the first hundred femtoseconds. Since the ultrafast dynamics mostly match those of similar salicylimines, our findings might also apply to those systems and provide additional insight into their reported sensitivity on excitation energy.
Related Literature
Boron nitride nanotubes functionalized by a series of carbenes
Fenglei Cao, Wei Ren, Xianyan Xu, Yue-meng Ji, Cunyuan Zhao
DOI: 10.1039/B901512D
Incorporation and electron transfer of anthracene in pores of ZSM-5 zeolites. Effect of Brønsted acid site density
Matthieu Hureau, Alain Moissette, Séverine Marquis, Claude Brémard, Hervé Vezin
DOI: 10.1039/B904010B
Complete 1H resonance assignment of β-maltose from 1H–1H DQ-SQ CRAMPS and 1H (DQ-DUMBO)–13CSQ refocused INEPT 2D solid-state NMR spectra and first principles GIPAW calculations
Amy L. Webber, Bénédicte Elena, John M. Griffin, Jonathan R. Yates, Tran N. Pham, Francesco Mauri, Chris J. Pickard, Ana M. Gil, Robin Stein, Anne Lesage, Lyndon Emsley, Steven P. Brown
DOI: 10.1039/C001290D
Periodic DFT modeling of bulk and surface properties of MgCl2
Raffaele Credendino, Vincenzo Busico, Mauro Causà, Peter H. M. Budzelaar, Claudio Zicovich-Wilson
DOI: 10.1039/B905676A
Operando X-ray absorption spectroscopy studies on Pd-SnO2 based sensors
Dorota Koziej, Michael Hübner, Nicolae Barsan, Udo Weimar, Marcin Sikora, Jan-Dierk Grunwaldt
DOI: 10.1039/B906829E
The reactivity of CO2 with K atoms adsorbed on MgO powders
Gloria Preda, Gianfranco Pacchioni, Mario Chiesa, Elio Giamello
DOI: 10.1039/B906192D
Power-law statistics in blinking SERS of thiacyanine adsorbed on a single silver nanoaggregate
Yuhei Tanaka, Tamitake Itoh, Yukihiro Ozaki
DOI: 10.1039/C000824A
You might also like
What precautions should be taken when handling 2-Methyl-2-propanyl 5-amino-2-thiophenecarboxylate (CAS: 1498311-57-1)?
When handling 2-Methyl-2-propanyl 5-amino-2-thiophenecarboxylate (CAS: 1498311-5...
What are the physical and chemical properties of 5-Bromo-1,2-dichloro-3-fluorobenzene (CAS: 1000572-93-9)?
5-Bromo-1,2-dichloro-3-fluorobenzene (CAS: 1000572-93-9) is a crystalline solid ...
How should (2R)-2-Amino-2-(4-bromophenyl)ethanol (CAS: 354153-64-3) be stored?
(2R)-2-Amino-2-(4-bromophenyl)ethanol (CAS: 354153-64-3) should be stored in a c...
What regulatory guidelines apply to Methyl 4-(aminomethyl)tetrahydro-2H-pyran-4-carboxylate hydrochloride (CAS: 362707-24-2)?
Methyl 4-(aminomethyl)tetrahydro-2H-pyran-4-carboxylate hydrochloride (CAS: 3627...
What are the main uses of 1,4-dimethyl-1H-pyrazole-5-sulfonyl chloride (CAS: 1174834-52-6)?
1,4-Dimethyl-1H-pyrazole-5-sulfonyl chloride is primarily used as an intermediat...
Is Dinaphtho[1,2-b:2',1'-d]furan (CAS: 239-69-0) safe?
Dinaphtho[1,2-b:2',1'-d]furan is generally safe when handled with appropriate pe...
What is the market or research trend for 7-Methyl-7,9-dihydro-1H-purine-2,6,8(3H)-trione (CAS: 612-37-3)?
The market for 7-Methyl-7,9-dihydro-1H-purine-2,6,8(3H)-trione (CAS: 612-37-3) i...
What are the physical and chemical properties of 2-(4-Chlorophenyl)malonaldehyde (CAS: 205676-17-1)?
2-(4-Chlorophenyl)malonaldehyde (CAS: 205676-17-1) is a colorless or light yello...
How is 2-Methylchrysene (CAS: 3351-32-4) typically synthesized?
2-Methylchrysene (CAS: 3351-32-4) is typically synthesized via the reaction of c...
Is N-(6-aminopyrimidin-4-yl)acetamide (CAS: 89533-23-3) safe?
N-(6-aminopyrimidin-4-yl)acetamide (CAS: 89533-23-3) is generally considered saf...
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.










methyl]-N,2-dimethyl-2-propanesulfinamide structure N-[(R)-[3-(Benzyloxy)-2-(dicyclohexylphosphino)phenyl](phenyl)methyl]-N,2-dimethyl-2-propanesulfinamide structure](https://static.chemtradehub.com/structs/256/2565792-50-7-8a26.webp)

![N-[(1-Ethyl-2-pyrrolidinyl)methyl]-2-hydroxy-5-sulfamoylbenzamide structure N-[(1-Ethyl-2-pyrrolidinyl)methyl]-2-hydroxy-5-sulfamoylbenzamide structure](https://static.chemtradehub.com/structs/673/67381-52-6-877f.webp)

![2-[2-(2-Methoxyethoxy)ethoxy]-2-methylpropane structure 2-[2-(2-Methoxyethoxy)ethoxy]-2-methylpropane structure](https://static.chemtradehub.com/structs/527/52788-79-1-71c1.webp)