Bottom-Up Electrochemical Fabrication of Conjugated Ultrathin Layers with Tailored Switchable Properties

Abstract : A bottom-up electrochemical process for fabricating conjugated ultrathin layers with tailored switchable properties is developed. Ultrathin layers of covalently grafted oligo(bisthienylbenzene) (oligo(BTB)) are used as switchable organic electrodes, and 3,4-ethylenedioxythiophene (EDOT) is oxidized on this layer. Adding only a few (less than 3) nanometers of EDOT moieties (5 to 6 units) completely changes the switching properties of the layer without changing the surface concentration of the electroactive species. A range of new materials with tunable interfacial properties is created. They consist of oligo(BTB)-oligo(EDOT) diblock oligomers of various relative lengths covalently grafted onto the underlying electrode. These films retain reversible redox on/off switching and their switching potential can be finely tuned between +0.6 and −0.3 V/SCE while the overall thickness remains below 11 nm.
Document type :
Journal articles
Complete list of metadatas

Cited literature [35 references]  Display  Hide  Download

https://hal-univ-diderot.archives-ouvertes.fr/hal-01821774
Contributor : Pascal Martin <>
Submitted on : Monday, June 25, 2018 - 9:21:05 AM
Last modification on : Friday, January 4, 2019 - 5:32:55 PM
Long-term archiving on : Wednesday, September 26, 2018 - 1:14:01 PM

File

_system_appendPDF_proof_hi.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Verena Stockhausen, van Quyen Nguyen, Pascal Martin, Jean Christophe Lacroix. Bottom-Up Electrochemical Fabrication of Conjugated Ultrathin Layers with Tailored Switchable Properties. ACS Applied Materials & Interfaces, Washington, D.C. : American Chemical Society, 2017, 9 (1), pp.610-617. ⟨10.1021/acsami.6b08754⟩. ⟨hal-01821774⟩

Share

Metrics

Record views

75

Files downloads

109