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An Azobenzene-Clamped Bichromophore
Schmickler, Nils, Hofmeister, David A., Bahr, Joshua, Schedlbauer, Jakob
, Jester, Stefan-S., Lupton, John M.
und Höger, Sigurd
(2022)
An Azobenzene-Clamped Bichromophore.
Organic Materials 4 (04), S. 153-162.
Veröffentlichungsdatum dieses Volltextes: 11 Mrz 2025 13:06
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.75213
Zusammenfassung
An azo-clamped nanoscale bichromophoric cyclophane is synthesized by the intramolecular Pd(II)-catalyzed coupling of the corresponding bisacetylenic precursor. The two azo moieties in the latter can adopt cis and trans configurations. Thin-layer chromatography shows only two spots, and by scanning tunneling microscopy the trans/trans and cis/cis isomers are found. The final cyclophane does not ...
An azo-clamped nanoscale bichromophoric cyclophane is synthesized by the intramolecular Pd(II)-catalyzed coupling of the corresponding bisacetylenic precursor. The two azo moieties in the latter can adopt cis and trans configurations. Thin-layer chromatography shows only two spots, and by scanning tunneling microscopy the trans/trans and cis/cis isomers are found. The final cyclophane does not show any switching behavior at all, but dense and wide structures are visualized after adsorption to highly oriented pyrolytic graphite. Photophysical investigations of the cyclophane show that most of the fluorescence is quenched, most likely due to the azo clamp. However, bright molecules show nearly perfect single-photon emission, meaning that efficient energy transfer between the two chromophores takes place within the molecule.
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| Dokumentenart | Artikel | ||||
| Titel eines Journals oder einer Zeitschrift | Organic Materials | ||||
| Verlag: | Thieme | ||||
|---|---|---|---|---|---|
| Band: | 4 | ||||
| Nummer des Zeitschriftenheftes oder des Kapitels: | 04 | ||||
| Seitenbereich: | S. 153-162 | ||||
| Datum | 26 Oktober 2022 | ||||
| Institutionen | Physik > Institut für Experimentelle und Angewandte Physik > Lehrstuhl Professor Lupton > Arbeitsgruppe John Lupton | ||||
| Projekte |
Gefördert von:
Deutsche Forschungsgemeinschaft (DFG)
(455731873)
| ||||
| Identifikationsnummer |
| ||||
| Stichwörter / Keywords | cyclophanes - azo-switches - phenylene–ethynylene–butadiynylenes - scanning tunneling microscopy - single-molecule spectroscopy | ||||
| Dewey-Dezimal-Klassifikation | 500 Naturwissenschaften und Mathematik > 530 Physik | ||||
| Status | Veröffentlicht | ||||
| Begutachtet | Ja, diese Version wurde begutachtet | ||||
| An der Universität Regensburg entstanden | Ja | ||||
| URN der UB Regensburg | urn:nbn:de:bvb:355-epub-752134 | ||||
| Dokumenten-ID | 75213 |
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