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Impellizzeri, S.; Simoncelli, S.; Hodgson, G.K.; Lanterna, A.E.; McTiernan, C.D.; Raymo, F.M.; Aramendia, P.F.; Scaiano, J.C. "Two-Photon Excitation of a Plasmonic Nanoswitch Monitored by Single-Molecule Fluorescence Microscopy" (2016) Chemistry - A European Journal. 22(21):7281-7287
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Abstract:

Visible-light excitation of the surface plasmon band of silver nanoplates can effectively localize and concentrate the incident electromagnetic field enhancing the photochemical performance of organic molecules. Herein, the first single-molecule study of the plasmon-assisted isomerization of a photochrome-fluorophore dyad, designed to switch between a nonfluorescent and a fluorescent state in response to the photochromic transformation, is reported. The photochemistry of the switchable assembly, consisting of a photochromic benzooxazine chemically conjugated to a coumarin moiety, is examined in real time with total internal reflection fluorescence microscopy in the presence of silver nanoplates excited with a 633 nm laser. The metallic nanostructures significantly enhance the visible light-induced performance of the photoconversion, which normally requires ultraviolet excitation. The resulting ring-open isomer is strongly fluorescent and can also be excited at 633 nm. These stochastic emission events are used to monitor photochromic activation and show quadratic dependence on incident power. The utilization of a single laser wavelength for both photochromic activation and excitation effectively mimics a pseudo two-colours system. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Registro:

Documento: Artículo
Título:Two-Photon Excitation of a Plasmonic Nanoswitch Monitored by Single-Molecule Fluorescence Microscopy
Autor:Impellizzeri, S.; Simoncelli, S.; Hodgson, G.K.; Lanterna, A.E.; McTiernan, C.D.; Raymo, F.M.; Aramendia, P.F.; Scaiano, J.C.
Filiación:Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, ON K1N 6N5, Canada
Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146-0431, United States
Centro de Investigaciones en Bionanociencias (CIBION) CONICET, Godoy Cruz 2390, Departamento de Química Inorgánica, Analítica y Química Física, FCEN, UBA, Pabellón 2, Ciudad Universitaria, Buenos Aires, Argentina
Palabras clave:nanoparticles; photochromes; surface plasmon; TIRFM; Chemical activation; Electric excitation; Electromagnetic fields; Fluorescence; Fluorescence microscopy; Isomers; Light; Molecules; Nanoparticles; Nanostructures; Photochromism; Plasmons; Refractive index; Silver; Stochastic systems; Photochromes; Photochromic transformations; Single-molecule fluorescence microscopy; Single-molecule studies; Surface plasmons; TIRFM; Total internal reflection fluorescence microscopy; Visible light excitation; Laser excitation
Año:2016
Volumen:22
Número:21
Página de inicio:7281
Página de fin:7287
DOI: http://dx.doi.org/10.1002/chem.201600218
Título revista:Chemistry - A European Journal
Título revista abreviado:Chem. Eur. J.
ISSN:09476539
CODEN:CEUJE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09476539_v22_n21_p7281_Impellizzeri

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Citas:

---------- APA ----------
Impellizzeri, S., Simoncelli, S., Hodgson, G.K., Lanterna, A.E., McTiernan, C.D., Raymo, F.M., Aramendia, P.F.,..., Scaiano, J.C. (2016) . Two-Photon Excitation of a Plasmonic Nanoswitch Monitored by Single-Molecule Fluorescence Microscopy. Chemistry - A European Journal, 22(21), 7281-7287.
http://dx.doi.org/10.1002/chem.201600218
---------- CHICAGO ----------
Impellizzeri, S., Simoncelli, S., Hodgson, G.K., Lanterna, A.E., McTiernan, C.D., Raymo, F.M., et al. "Two-Photon Excitation of a Plasmonic Nanoswitch Monitored by Single-Molecule Fluorescence Microscopy" . Chemistry - A European Journal 22, no. 21 (2016) : 7281-7287.
http://dx.doi.org/10.1002/chem.201600218
---------- MLA ----------
Impellizzeri, S., Simoncelli, S., Hodgson, G.K., Lanterna, A.E., McTiernan, C.D., Raymo, F.M., et al. "Two-Photon Excitation of a Plasmonic Nanoswitch Monitored by Single-Molecule Fluorescence Microscopy" . Chemistry - A European Journal, vol. 22, no. 21, 2016, pp. 7281-7287.
http://dx.doi.org/10.1002/chem.201600218
---------- VANCOUVER ----------
Impellizzeri, S., Simoncelli, S., Hodgson, G.K., Lanterna, A.E., McTiernan, C.D., Raymo, F.M., et al. Two-Photon Excitation of a Plasmonic Nanoswitch Monitored by Single-Molecule Fluorescence Microscopy. Chem. Eur. J. 2016;22(21):7281-7287.
http://dx.doi.org/10.1002/chem.201600218