Kinetics and characterization of photoinduced long-lived electron-hole pair of p-terphenyl occluded in ZSM-5 zeolites. Effects of aluminium content and extraframework cation

Physical Chemistry Chemical Physics : PCCP
Alain MoissetteHervé Vezin

Abstract

Diffuse reflectance UV-visible in combination with FT-Raman spectroscopies demonstrate the total incorporation without any solvent of p-terphenyl (p-TP) as an intact molecule in the medium size channel of non-acidic M(n)ZSM-5 (M = Li(+), Na(+), K(+), Rb(+), Cs(+) and n = 0, 3.4, 6.6) zeolites. The combined effects of confinement and electrostatic field induced by alkaline ions in the M(n)ZSM-5 zeolites lead only to weak conformational changes in the occluded p-TP after very long organization periods. The interaction between the counterbalancing cation and p-TP occurs through one phenyl group facially coordinated to the cation near the O atoms binding Al atoms. The laser UV photolysis of p-terphenyl occluded as intact molecules in non-acidic M(n)ZSM-5 zeolites generates long-lived charge separated states. The photoionization induces a p-TP*(+)-electron pair as a primary phenomenon. The recombination of the p-TP*(+)@M(n)ZSM-5*(-) radical cation moiety occurs mainly through unusual electron abstraction from the zeolite framework and p-TP@M(n)ZSM-5*(-)*(+) electron-hole pair formation which exceeds several days at room temperature in Li(6.6)ZSM-5. The very long-lived radical pairs are characterized by conventional DRUVv, FT-Raman a...Continue Reading

References

Oct 10, 2002·Chemical Reviews·Avelino Corma, Hermenegildo García
Nov 14, 2002·Chemical Reviews·Hermenegildo García, Heinz D Roth
Jan 13, 2004·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·K George ThomasDirk M Guldi
Apr 29, 2004·Journal of the American Chemical Society·Emily A WeissMichael R Wasielewski
Jul 23, 2004·The Journal of Chemical Physics·K K Zhuravlev, M D McCluskey
Aug 18, 2005·Journal of the American Chemical Society·Emily A WeissMichael R Wasielewski
Nov 3, 2005·Journal of the American Chemical Society·Alain MoissetteClaude Brémard
Jul 1, 2006·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Séverine MarquisClaude Brémard
Jul 21, 2006·The Journal of Physical Chemistry. B·Mercedes AlvaroMaria T Navarro
Oct 31, 2006·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Hervé VezinClaude Brémard
Mar 14, 2007·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·S DebD Bhattacharjee
Jan 17, 2009·Journal of the American Chemical Society·Moloy BanerjeeRajendra Rathore

❮ Previous
Next ❯

Citations

Jul 27, 2012·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Matthieu HureauClaude Brémard
Mar 31, 2011·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Fatima BelhadjZoubir Derriche
Apr 29, 2020·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Matthieu HureauJérémy Gaillard

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry
Séverine MarquisClaude Brémard
Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology
Matthieu HureauClaude Brémard
Physical Chemistry Chemical Physics : PCCP
Alain MoissetteMatthieu Hureau
© 2022 Meta ULC. All rights reserved