[EMIM]FAP: 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate
1439-7641/asset/2267_left.gif?v=1&s=88bba25f972f2910d68d710d90acef97fd57e112)
1439-7641/asset/2267_right.gif?v=1&s=977d5b2d8db9226d6973af423e8c7e3b05f79c7a)
Article
An in Situ STM and DTS Study of the Extremely Pure [EMIM]FAP/Au(111) Interface†
Article first published online: 30 DEC 2011
DOI: 10.1002/cphc.201100873
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Borisenko, N., Zein El Abedin, S. and Endres, F. (2012), An in Situ STM and DTS Study of the Extremely Pure [EMIM]FAP/Au(111) Interface. ChemPhysChem, 13: 1736–1742. doi: 10.1002/cphc.201100873
- †
Publication History
- Issue published online: 8 MAY 2012
- Article first published online: 30 DEC 2011
- Manuscript Revised: 21 NOV 2011
- Manuscript Received: 31 OCT 2011
Funded by
- Deutsche Forschungsgemeinschaft
- DFG
- Abstract
- Article
- References
- Cited By
Keywords:
- cyclic voltammetry;
- interfaces;
- ionic liquids;
- scanning tunneling microscopy;
- surface analysis
Abstract
Herein the structure of the interfacial layer between the air- and water-stable ionic liquid 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate ([EMIM]FAP) and Au(111) is investigated using in situ scanning tunneling microscopy (STM), distance tunneling spectroscopy (DTS) and cyclic voltammetry (CV) measurements. The in situ STM measurements reveal that structured interfacial layers can be probed in both cathodic and anodic regimes at the IL/Au(111) interface. The structure of these layers is dependent on the applied electrode potential, the number of subsequent STM scans and the scan rate. Furthermore, first DTS results show that the tunneling barrier during the 1st STM scan does not seem to change significantly in the cathodic potential regime between the ocp (−0.2 V) and −2.0 V.