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Cooperative supramolecular polymerization of an amine-substituted naphthalene-diimide and its impact on excited state photophysical properties

A donor–acceptor–donor (D–A–D) type naphthalene-diimide (NDI-H) chromophore exhibits highly cooperative J-aggregation leading to nanotubular self-assembly and gelation in n-decane, as demonstrated by UV/Vis, FT-IR, photoluminescence and microscopy studies. Analysis of temperature-dependent UV/Vis sp...

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Autores principales: Kar, Haridas, Gehrig, Dominik W., Allampally, Naveen Kumar, Fernández, Gustavo, Laquai, Frédéric, Ghosh, Suhrit
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5975828/
https://www.ncbi.nlm.nih.gov/pubmed/29910867
http://dx.doi.org/10.1039/c5sc03462k
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author Kar, Haridas
Gehrig, Dominik W.
Allampally, Naveen Kumar
Fernández, Gustavo
Laquai, Frédéric
Ghosh, Suhrit
author_facet Kar, Haridas
Gehrig, Dominik W.
Allampally, Naveen Kumar
Fernández, Gustavo
Laquai, Frédéric
Ghosh, Suhrit
author_sort Kar, Haridas
collection PubMed
description A donor–acceptor–donor (D–A–D) type naphthalene-diimide (NDI-H) chromophore exhibits highly cooperative J-aggregation leading to nanotubular self-assembly and gelation in n-decane, as demonstrated by UV/Vis, FT-IR, photoluminescence and microscopy studies. Analysis of temperature-dependent UV/Vis spectra using the nucleation–elongation model and FT-IR data reveals the molecular origin of the cooperative nature of the self-assembly. The supramolecular polymerization is initiated by H-bonding up to a degree of polymerization ∼20–25, which in a subsequent elongation step promotes J-aggregation in orthogonal direction leading to possibly a sheet-like structure that eventually produces nanotubes. Time-resolved fluorescence and absorption measurements demonstrate that such a tubular assembly enables very effective delocalization of excited states resulting in a remarkably prolonged excited state lifetime.
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spelling pubmed-59758282018-06-15 Cooperative supramolecular polymerization of an amine-substituted naphthalene-diimide and its impact on excited state photophysical properties Kar, Haridas Gehrig, Dominik W. Allampally, Naveen Kumar Fernández, Gustavo Laquai, Frédéric Ghosh, Suhrit Chem Sci Chemistry A donor–acceptor–donor (D–A–D) type naphthalene-diimide (NDI-H) chromophore exhibits highly cooperative J-aggregation leading to nanotubular self-assembly and gelation in n-decane, as demonstrated by UV/Vis, FT-IR, photoluminescence and microscopy studies. Analysis of temperature-dependent UV/Vis spectra using the nucleation–elongation model and FT-IR data reveals the molecular origin of the cooperative nature of the self-assembly. The supramolecular polymerization is initiated by H-bonding up to a degree of polymerization ∼20–25, which in a subsequent elongation step promotes J-aggregation in orthogonal direction leading to possibly a sheet-like structure that eventually produces nanotubes. Time-resolved fluorescence and absorption measurements demonstrate that such a tubular assembly enables very effective delocalization of excited states resulting in a remarkably prolonged excited state lifetime. Royal Society of Chemistry 2016-02-01 2015-10-30 /pmc/articles/PMC5975828/ /pubmed/29910867 http://dx.doi.org/10.1039/c5sc03462k 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
Kar, Haridas
Gehrig, Dominik W.
Allampally, Naveen Kumar
Fernández, Gustavo
Laquai, Frédéric
Ghosh, Suhrit
Cooperative supramolecular polymerization of an amine-substituted naphthalene-diimide and its impact on excited state photophysical properties
title Cooperative supramolecular polymerization of an amine-substituted naphthalene-diimide and its impact on excited state photophysical properties
title_full Cooperative supramolecular polymerization of an amine-substituted naphthalene-diimide and its impact on excited state photophysical properties
title_fullStr Cooperative supramolecular polymerization of an amine-substituted naphthalene-diimide and its impact on excited state photophysical properties
title_full_unstemmed Cooperative supramolecular polymerization of an amine-substituted naphthalene-diimide and its impact on excited state photophysical properties
title_short Cooperative supramolecular polymerization of an amine-substituted naphthalene-diimide and its impact on excited state photophysical properties
title_sort cooperative supramolecular polymerization of an amine-substituted naphthalene-diimide and its impact on excited state photophysical properties
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5975828/
https://www.ncbi.nlm.nih.gov/pubmed/29910867
http://dx.doi.org/10.1039/c5sc03462k
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