| Texto completo | |
| Autor(es): Mostrar menos - |
Lokamani, Mani
;
Kilibarda, Filip
;
Guenther, Florian
;
Kelling, Jeffrey
;
Strobel, Alexander
;
Zahn, Peter
;
Juckeland, Guido
;
Gothelf, Kurt V.
;
Scheer, Elke
;
Gemming, Sibylle
;
Erbe, Artur
Número total de Autores: 11
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Physical Chemistry Letters; v. N/A, p. 9-pg., 2023-06-15. |
| Resumo | |
The current-voltage characteristics of a single-moleculejunction are determined by the electronic coupling Gamma betweenthe electronic states of the electrodes and the dominant transportchannel(s) of the molecule. Gamma is profoundly affected by thechoice of the anchoring groups and their binding positions on thetip facets and the tip-tip separation. In this work, mechanicallycontrollable break junction experiments on the N,N '-bis(5-ethynylbenzenethiol-salicylidene)ethylenediamineare presented, in particular, the stretch evolution of Gamma withincreasing tip-tip separation. The stretch evolution of Gamma is characterized by recurring local maxima and can be related to thedeformation of the molecule and sliding of the anchoring groups abovethe tip facets and along the tip edges. A dynamic simulation approachis implemented to model the stretch evolution of Gamma, which capturesthe experimentally observed features remarkably well and establishesa link to the microscopic structure of the single-molecule junction. (AU) | |
| Processo FAPESP: | 18/15670-5 - Novos materiais semicondutores baseadas em PDMS e DPP para Eletrônicas Flexíveis e Esticáveis: Fabricação, Análise e Aplicações em Dispositivos Orgânicos |
| Beneficiário: | Florian Steffen Günther |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |