Cooperative supramolecular polymerization of an amine-substituted naphthalene-diimide and its impact on excited state photophysical properties
Please always quote using this 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.…
Author: | 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 |
Document Type: | Journal article |
Faculties: | Fakultät für Chemie und Pharmazie / Institut für Organische Chemie |
Language: | English |
Parent Title (English): | Chemical Science |
Year of Completion: | 2016 |
Volume: | 7 |
Issue: | 2 |
Pagenumber: | 1115-1120 |
Source: | Chemical Science (2016) 7:2, S. 1115-1120. https://doi.org/10.1039/c5sc03462k |
DOI: | https://doi.org/10.1039/c5sc03462k |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 547 Organische Chemie |
Tag: | FT-IR spectroscopy; NDI-H; UV/Vis spectroscopy; nanotube; nucleation-elongation model; supramolecular polymerization; transient absorption |
Release Date: | 2021/02/26 |
Licence (German): | CC BY: Creative-Commons-Lizenz: Namensnennung |