Cooperative supramolecular polymerization of an amine-substituted naphthalene-diimide and its impact on excited state photophysical properties
Zitieren Sie bitte immer diese URN: urn:nbn:de:bvb:20-opus-191459
- 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 similar to 20-25,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 similar to 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.…
Autor(en): | Haridas Kar, Dominik W. Gehrig, Naveen Kumar Allampally, Gustavo Fernández, Frédéric Laquai, Suhrit Ghosh |
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URN: | urn:nbn:de:bvb:20-opus-191459 |
Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
Institute der Universität: | Fakultät für Chemie und Pharmazie / Institut für Organische Chemie |
Sprache der Veröffentlichung: | Englisch |
Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | Chemical Science |
Erscheinungsjahr: | 2016 |
Band / Jahrgang: | 7 |
Heft / Ausgabe: | 2 |
Seitenangabe: | 1115-1120 |
Originalveröffentlichung / Quelle: | Chemical Science (2016) 7:2, S. 1115-1120. https://doi.org/10.1039/c5sc03462k |
DOI: | https://doi.org/10.1039/c5sc03462k |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 54 Chemie / 547 Organische Chemie |
Freie Schlagwort(e): | FT-IR spectroscopy; NDI-H; UV/Vis spectroscopy; nanotube; nucleation-elongation model; supramolecular polymerization; transient absorption |
Datum der Freischaltung: | 26.02.2021 |
Lizenz (Deutsch): | CC BY: Creative-Commons-Lizenz: Namensnennung |