Functionalized cationic [4]helicenes with unique tuning of absorption, fluorescence and chiroptical properties up to the far-red range

Unprecedented regioselective post-functionalization of racemic and enantiopure cationic diaza [4]helicenes is afforded. The peripheral auxochrome substituents allow a general tuning of the electrochemical, photophysical and chiroptical properties of the helical dyes (26 examples). For instance, elec...

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Autores principales: Delgado, I. Hernández, Pascal, S., Wallabregue, A., Duwald, R., Besnard, C., Guénée, L., Nançoz, C., Vauthey, E., Tovar, R. C., Lunkley, J. L., Muller, G., Lacour, J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2016
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5772034/
https://www.ncbi.nlm.nih.gov/pubmed/29348909
http://dx.doi.org/10.1039/c6sc00614k
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author Delgado, I. Hernández
Pascal, S.
Wallabregue, A.
Duwald, R.
Besnard, C.
Guénée, L.
Nançoz, C.
Vauthey, E.
Tovar, R. C.
Lunkley, J. L.
Muller, G.
Lacour, J.
author_facet Delgado, I. Hernández
Pascal, S.
Wallabregue, A.
Duwald, R.
Besnard, C.
Guénée, L.
Nançoz, C.
Vauthey, E.
Tovar, R. C.
Lunkley, J. L.
Muller, G.
Lacour, J.
author_sort Delgado, I. Hernández
collection PubMed
description Unprecedented regioselective post-functionalization of racemic and enantiopure cationic diaza [4]helicenes is afforded. The peripheral auxochrome substituents allow a general tuning of the electrochemical, photophysical and chiroptical properties of the helical dyes (26 examples). For instance, electronic absorption and circular dichroism are modulated from the orange to near-infrared spectral range (575–750 nm), fluorescence quantum efficiency is enhanced up to 0.55 (631 nm) and circularly polarized luminescence is recorded in the red (|g(lum)| ∼ 10(–3)).
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spelling pubmed-57720342018-01-18 Functionalized cationic [4]helicenes with unique tuning of absorption, fluorescence and chiroptical properties up to the far-red range Delgado, I. Hernández Pascal, S. Wallabregue, A. Duwald, R. Besnard, C. Guénée, L. Nançoz, C. Vauthey, E. Tovar, R. C. Lunkley, J. L. Muller, G. Lacour, J. Chem Sci Chemistry Unprecedented regioselective post-functionalization of racemic and enantiopure cationic diaza [4]helicenes is afforded. The peripheral auxochrome substituents allow a general tuning of the electrochemical, photophysical and chiroptical properties of the helical dyes (26 examples). For instance, electronic absorption and circular dichroism are modulated from the orange to near-infrared spectral range (575–750 nm), fluorescence quantum efficiency is enhanced up to 0.55 (631 nm) and circularly polarized luminescence is recorded in the red (|g(lum)| ∼ 10(–3)). Royal Society of Chemistry 2016-07-01 2016-04-08 /pmc/articles/PMC5772034/ /pubmed/29348909 http://dx.doi.org/10.1039/c6sc00614k Text en This journal is © The Royal Society of Chemistry 2016 https://creativecommons.org/licenses/by/3.0/This article is freely available. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (CC BY 3.0)
spellingShingle Chemistry
Delgado, I. Hernández
Pascal, S.
Wallabregue, A.
Duwald, R.
Besnard, C.
Guénée, L.
Nançoz, C.
Vauthey, E.
Tovar, R. C.
Lunkley, J. L.
Muller, G.
Lacour, J.
Functionalized cationic [4]helicenes with unique tuning of absorption, fluorescence and chiroptical properties up to the far-red range
title Functionalized cationic [4]helicenes with unique tuning of absorption, fluorescence and chiroptical properties up to the far-red range
title_full Functionalized cationic [4]helicenes with unique tuning of absorption, fluorescence and chiroptical properties up to the far-red range
title_fullStr Functionalized cationic [4]helicenes with unique tuning of absorption, fluorescence and chiroptical properties up to the far-red range
title_full_unstemmed Functionalized cationic [4]helicenes with unique tuning of absorption, fluorescence and chiroptical properties up to the far-red range
title_short Functionalized cationic [4]helicenes with unique tuning of absorption, fluorescence and chiroptical properties up to the far-red range
title_sort functionalized cationic [4]helicenes with unique tuning of absorption, fluorescence and chiroptical properties up to the far-red range
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5772034/
https://www.ncbi.nlm.nih.gov/pubmed/29348909
http://dx.doi.org/10.1039/c6sc00614k
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