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Optical gating with organic building blocks. A quantitative model for the fluorescence modulation of photochromic perylene bisimide dithienylcyclopentene triads

We investigated the capability of molecular triads, consisting of two strong fluorophores that were covalently linked to a photochromic molecule, for optical gating. Therefore we monitored the fluorescence intensity of the fluorophores as a function of the isomeric state of the photoswitch. From the...

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Autores principales: Pärs, Martti, Gradmann, Michael, Gräf, Katja, Bauer, Peter, Thelakkat, Mukundan, Köhler, Jürgen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3949285/
https://www.ncbi.nlm.nih.gov/pubmed/24614963
http://dx.doi.org/10.1038/srep04316
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author Pärs, Martti
Gradmann, Michael
Gräf, Katja
Bauer, Peter
Thelakkat, Mukundan
Köhler, Jürgen
author_facet Pärs, Martti
Gradmann, Michael
Gräf, Katja
Bauer, Peter
Thelakkat, Mukundan
Köhler, Jürgen
author_sort Pärs, Martti
collection PubMed
description We investigated the capability of molecular triads, consisting of two strong fluorophores that were covalently linked to a photochromic molecule, for optical gating. Therefore we monitored the fluorescence intensity of the fluorophores as a function of the isomeric state of the photoswitch. From the analysis of our data we develop a kinetic model that allows us to predict quantitatively the degree of the fluorescence modulation as a function of the mutual intensities of the lasers that are used to induce the fluorescence and the switching of the photochromic unit. We find that the achievable contrast for the modulation of the fluorescence depends mainly on the intensity ratio of the two light beams and appears to be very robust against absolute changes of these intensities. The latter result provides valuable information for the development of all-optical circuits which would require to handle different signal strengths for the input and output levels.
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spelling pubmed-39492852014-03-12 Optical gating with organic building blocks. A quantitative model for the fluorescence modulation of photochromic perylene bisimide dithienylcyclopentene triads Pärs, Martti Gradmann, Michael Gräf, Katja Bauer, Peter Thelakkat, Mukundan Köhler, Jürgen Sci Rep Article We investigated the capability of molecular triads, consisting of two strong fluorophores that were covalently linked to a photochromic molecule, for optical gating. Therefore we monitored the fluorescence intensity of the fluorophores as a function of the isomeric state of the photoswitch. From the analysis of our data we develop a kinetic model that allows us to predict quantitatively the degree of the fluorescence modulation as a function of the mutual intensities of the lasers that are used to induce the fluorescence and the switching of the photochromic unit. We find that the achievable contrast for the modulation of the fluorescence depends mainly on the intensity ratio of the two light beams and appears to be very robust against absolute changes of these intensities. The latter result provides valuable information for the development of all-optical circuits which would require to handle different signal strengths for the input and output levels. Nature Publishing Group 2014-03-11 /pmc/articles/PMC3949285/ /pubmed/24614963 http://dx.doi.org/10.1038/srep04316 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-sa/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareALike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/
spellingShingle Article
Pärs, Martti
Gradmann, Michael
Gräf, Katja
Bauer, Peter
Thelakkat, Mukundan
Köhler, Jürgen
Optical gating with organic building blocks. A quantitative model for the fluorescence modulation of photochromic perylene bisimide dithienylcyclopentene triads
title Optical gating with organic building blocks. A quantitative model for the fluorescence modulation of photochromic perylene bisimide dithienylcyclopentene triads
title_full Optical gating with organic building blocks. A quantitative model for the fluorescence modulation of photochromic perylene bisimide dithienylcyclopentene triads
title_fullStr Optical gating with organic building blocks. A quantitative model for the fluorescence modulation of photochromic perylene bisimide dithienylcyclopentene triads
title_full_unstemmed Optical gating with organic building blocks. A quantitative model for the fluorescence modulation of photochromic perylene bisimide dithienylcyclopentene triads
title_short Optical gating with organic building blocks. A quantitative model for the fluorescence modulation of photochromic perylene bisimide dithienylcyclopentene triads
title_sort optical gating with organic building blocks. a quantitative model for the fluorescence modulation of photochromic perylene bisimide dithienylcyclopentene triads
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3949285/
https://www.ncbi.nlm.nih.gov/pubmed/24614963
http://dx.doi.org/10.1038/srep04316
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