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Swaminathan, S.; Petriella, M.; Deniz, E.; Cusido, J.; Baker, J.D.; Bossi, M.L.; Raymo, F.M. "Fluorescence photoactivation by intermolecular proton transfer" (2012) Journal of Physical Chemistry A. 116(40):9928-9933
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Abstract:

We designed a strategy to activate fluorescence under the influence of optical stimulations based on the intermolecular transfer of protons. Specifically, the illumination of a 2-nitrobenzyl derivative at an activating wavelength is accompanied by the release of hydrogen bromide. In turn, the photogenerated acid encourages the opening of an oxazine ring embedded within a halochromic compound. This structural transformation extends the conjugation of an adjacent coumarin fluorophore and enables its absorption at an appropriate excitation wavelength. Indeed, this bimolecular system offers the opportunity to activate fluorescence in liquid solutions, within rigid matrixes and inside micellar assemblies, relying on the interplay of activating and exciting beams. Furthermore, this strategy permits the permanent imprinting of fluorescent patterns on polymer films, the monitoring of proton diffusion within such materials in real time on a millisecond time scale, and the acquisition of images with spatial resolution at the nanometer level. Thus, our operating principles for fluorescence activation can eventually lead to the development of valuable photoswitchable probes for imaging applications and versatile mechanisms for the investigation of proton transport. © 2012 American Chemical Society.

Registro:

Documento: Artículo
Título:Fluorescence photoactivation by intermolecular proton transfer
Autor:Swaminathan, S.; Petriella, M.; Deniz, E.; Cusido, J.; Baker, J.D.; Bossi, M.L.; Raymo, F.M.
Filiación:Laboratory for Molecular Photonics, Department of Biology, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146-0431, United States
Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146-0431, United States
INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:2-nitrobenzyl; Excitation wavelength; Hydrogen bromide; Imaging applications; Intermolecular transfer; Liquid solution; Micellar assemblies; Nanometer level; Operating principles; Optical stimulation; Photo-switchable; Photoactivation; Proton diffusion; Proton transport; Real time; Spatial resolution; Structural transformation; Time-scales; Chemical activation; Polymer films; Fluorescence; hydrobromic acid; proton; article; chemistry; fluorescence; photochemistry; Fluorescence; Hydrobromic Acid; Photochemical Processes; Protons
Año:2012
Volumen:116
Número:40
Página de inicio:9928
Página de fin:9933
DOI: http://dx.doi.org/10.1021/jp307787w
Título revista:Journal of Physical Chemistry A
Título revista abreviado:J Phys Chem A
ISSN:10895639
CODEN:JPCAF
CAS:hydrobromic acid, 10035-10-6; proton, 12408-02-5, 12586-59-3; Hydrobromic Acid, 10035-10-6; Protons
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10895639_v116_n40_p9928_Swaminathan

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Citas:

---------- APA ----------
Swaminathan, S., Petriella, M., Deniz, E., Cusido, J., Baker, J.D., Bossi, M.L. & Raymo, F.M. (2012) . Fluorescence photoactivation by intermolecular proton transfer. Journal of Physical Chemistry A, 116(40), 9928-9933.
http://dx.doi.org/10.1021/jp307787w
---------- CHICAGO ----------
Swaminathan, S., Petriella, M., Deniz, E., Cusido, J., Baker, J.D., Bossi, M.L., et al. "Fluorescence photoactivation by intermolecular proton transfer" . Journal of Physical Chemistry A 116, no. 40 (2012) : 9928-9933.
http://dx.doi.org/10.1021/jp307787w
---------- MLA ----------
Swaminathan, S., Petriella, M., Deniz, E., Cusido, J., Baker, J.D., Bossi, M.L., et al. "Fluorescence photoactivation by intermolecular proton transfer" . Journal of Physical Chemistry A, vol. 116, no. 40, 2012, pp. 9928-9933.
http://dx.doi.org/10.1021/jp307787w
---------- VANCOUVER ----------
Swaminathan, S., Petriella, M., Deniz, E., Cusido, J., Baker, J.D., Bossi, M.L., et al. Fluorescence photoactivation by intermolecular proton transfer. J Phys Chem A. 2012;116(40):9928-9933.
http://dx.doi.org/10.1021/jp307787w