Artículo
Simoncelli, S.; Kuzmanich, G.; Gard, M.N.; Garcia-Garibay, M.A. "Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals" (2010) Journal of Physical Organic Chemistry. 23(4):376-381
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Abstract:
Organic molecular nanocrystals suspended in water are useful when studying reactions that occur in the solid state because they retain not only the reactive and supramolecular properties of bulk crystals, but are also amenable to transmission spectroscopy. Having previously studied the triplet state of benzophenone nanocrystals by laser flash photolysis transmission spectroscopy, we now report nanosecond experiments in the presence of several possible quenchers: anionic and cationic surfactants, dissolved oxygen, and as a function of solvent deuteration (H2O and D2O). After finding these to have no effect, several anionic quenchers (IS, BrS, and NS3) were tested by Stern-Volmer analysis. Significant correlation between the quenching rates in solution and in nanocrystals suggests that the electronic excitation is accessible to quenchers at the surface. © 2010 John Wiley & Sons, Ltd.
Registro:
| Documento: | Artículo |
| Título: | Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals |
| Autor: | Simoncelli, S.; Kuzmanich, G.; Gard, M.N.; Garcia-Garibay, M.A. |
| Filiación: | Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, United States Departamento de Química Inorgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, 1428 Buenos Aires, Argentina |
| Palabras clave: | Benzophenone; Nanocrystalline; Nanosecond flash photolysis; Particle size; Solid-state reaction kinetics; Surface quenching; Bulk crystals; Deuterations; Electronic excitation; Flash photolysis; Laser flash photolysis; Nanocrystalline; Nanocrystallines; Quenching rate; Stern-volmer analysis; Supramolecular properties; Surface quenching; Transmission spectroscopy; Triplet state; Anionic surfactants; Association reactions; Cationic surfactants; Deuterium; Dissolution; Dissolved oxygen; Dyes; Nanocrystals; Photolysis; Quenching; Solid state reactions; Supramolecular chemistry; Surface reactions; Reaction kinetics |
| Año: | 2010 |
| Volumen: | 23 |
| Número: | 4 |
| Página de inicio: | 376 |
| Página de fin: | 381 |
| DOI: | http://dx.doi.org/10.1002/poc.1659 |
| Título revista: | Journal of Physical Organic Chemistry |
| Título revista abreviado: | J Phys Org Chem |
| ISSN: | 08943230 |
| CODEN: | JPOCE |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08943230_v23_n4_p376_Simoncelli |
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Citas:
---------- APA ----------
Simoncelli, S., Kuzmanich, G., Gard, M.N. & Garcia-Garibay, M.A. (2010) . Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals. Journal of Physical Organic Chemistry, 23(4), 376-381.http://dx.doi.org/10.1002/poc.1659
---------- CHICAGO ----------
Simoncelli, S., Kuzmanich, G., Gard, M.N., Garcia-Garibay, M.A. "Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals" . Journal of Physical Organic Chemistry 23, no. 4 (2010) : 376-381.http://dx.doi.org/10.1002/poc.1659
---------- MLA ----------
Simoncelli, S., Kuzmanich, G., Gard, M.N., Garcia-Garibay, M.A. "Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals" . Journal of Physical Organic Chemistry, vol. 23, no. 4, 2010, pp. 376-381.http://dx.doi.org/10.1002/poc.1659
---------- VANCOUVER ----------
Simoncelli, S., Kuzmanich, G., Gard, M.N., Garcia-Garibay, M.A. Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals. J Phys Org Chem. 2010;23(4):376-381.http://dx.doi.org/10.1002/poc.1659
