Fluorescence photoactivation by intermolecular proton transfer

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 photog...

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Detalles Bibliográficos
Autores principales:	Swaminathan, S., Petriella, M., Deniz, E., Cusido, J., Baker, J.D., Bossi, M.L., Raymo, F.M.
Formato:	JOUR
Materias:	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 Hydrobromic Acid Photochemical Processes Protons
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_10895639_v116_n40_p9928_Swaminathan
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_10895639_v116_n40_p9928_Swaminathan
record_format	dspace
spelling	todo:paper_10895639_v116_n40_p9928_Swaminathan2023-10-03T16:04:45Z Fluorescence photoactivation by intermolecular proton transfer Swaminathan, S. Petriella, M. Deniz, E. Cusido, J. Baker, J.D. Bossi, M.L. Raymo, F.M. 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 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. Fil:Bossi, M.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10895639_v116_n40_p9928_Swaminathan
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	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
spellingShingle	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 Swaminathan, S. Petriella, M. Deniz, E. Cusido, J. Baker, J.D. Bossi, M.L. Raymo, F.M. Fluorescence photoactivation by intermolecular proton transfer
topic_facet	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
description	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.
format	JOUR
author	Swaminathan, S. Petriella, M. Deniz, E. Cusido, J. Baker, J.D. Bossi, M.L. Raymo, F.M.
author_facet	Swaminathan, S. Petriella, M. Deniz, E. Cusido, J. Baker, J.D. Bossi, M.L. Raymo, F.M.
author_sort	Swaminathan, S.
title	Fluorescence photoactivation by intermolecular proton transfer
title_short	Fluorescence photoactivation by intermolecular proton transfer
title_full	Fluorescence photoactivation by intermolecular proton transfer
title_fullStr	Fluorescence photoactivation by intermolecular proton transfer
title_full_unstemmed	Fluorescence photoactivation by intermolecular proton transfer
title_sort	fluorescence photoactivation by intermolecular proton transfer
url	http://hdl.handle.net/20.500.12110/paper_10895639_v116_n40_p9928_Swaminathan
work_keys_str_mv	AT swaminathans fluorescencephotoactivationbyintermolecularprotontransfer AT petriellam fluorescencephotoactivationbyintermolecularprotontransfer AT denize fluorescencephotoactivationbyintermolecularprotontransfer AT cusidoj fluorescencephotoactivationbyintermolecularprotontransfer AT bakerjd fluorescencephotoactivationbyintermolecularprotontransfer AT bossiml fluorescencephotoactivationbyintermolecularprotontransfer AT raymofm fluorescencephotoactivationbyintermolecularprotontransfer
_version_	1807316567018438656

Fluorescence photoactivation by intermolecular proton transfer

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