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Shortcuts for Electron-Transfer through the Secondary Structure of Helical Oligo-1,2-Naphthylenes

Castrogiovanni, Alessandro and Herr, Patrick and Larsen, Christopher Bryan and Guo, Xingwei and Sparr, Christof and Wenger, Oliver S.. (2019) Shortcuts for Electron-Transfer through the Secondary Structure of Helical Oligo-1,2-Naphthylenes. Chemistry - A European Journal, 25. pp. 16748-16754.

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Official URL: https://edoc.unibas.ch/73735/

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Abstract

Atropisomeric 1,2‐naphthylene scaffolds provide access to donor–acceptor compounds with helical oligomer‐based bridges, and transient absorption studies revealed a highly unusual dependence of the electron‐transfer rate on oligomer length, which is due to their well‐defined secondary structure. Close noncovalent intramolecular contacts enable shortcuts for electron transfer that would otherwise have to occur over longer distances along covalent pathways, reminiscent of the behavior seen for certain proteins. The simplistic picture of tube‐like electron transfer can describe this superposition of different pathways including both the covalent helical backbone, as well as noncovalent contacts, contrasting the wire‐like behavior reported many times before for more conventional molecular bridges. The exquisite control over the molecular architecture, achievable with the configurationally stable and topologically defined 1,2‐naphthylene‐based scaffolds, is of key importance for the tube‐like electron transfer behavior. Our insights are relevant for the emerging field of multidimensional electron transfer and for possible future applications in molecular electronics.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Wenger)
05 Faculty of Science > Departement Chemie > Chemie > Organische Chemie (Sparr)
UniBasel Contributors:Wenger, Oliver and Castrogiovanni, Alessandro and Herr, Patrick and Larsen, Christopher Bryan and Guo, Xingwei and Sparr, Christof
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Wiley
ISSN:0947-6539
e-ISSN:1521-3765
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:11 Feb 2020 07:51
Deposited On:11 Feb 2020 07:51

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