%0 Journal Article %1 ISI:000243138700013 %A Gottfried, J. M. %A Maier, F. %A Rossa, J. %A Gerhard, D. %A Schulz, P. S. %A Wasserscheid, P. %A Steinrueck, H. P. %D 2006 %J ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS %K Surface %N 10-11 %P 1439-1453 %R 10.1524/zpch.2006.220.10.1439 %T Surface studies on the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate using X-ray photoelectron spectroscopy (XPS) %V 220 %X Surface studies of ionic liquids are particularly important for all kinds of multiphasic operations employing ionic liquids, e.g. biphasic homogeneous catalysis or supported ionic liquid phase catalysis. Using X-ray photoelectron spectroscopy (XPS), the surface composition of the model system 1-ethyl-3-methylimidazolium ethylsulfate EMIMEtOSO3 was investigated. By comparing two different samples of this ionic liquid from two different origins, we observed a decisive influence of silicon containing impurities on composition and structure of the surface. For the case of the impurities containing ionic liquid, our angle-dependent XPS data are in agreement with a model of a surface layer consisting of highly oriented ionic liquid molecules. From a fundamental point of view, our study may be of general relevance for the understanding, of the chemistry of liquid surfaces in general.

@article{ISI:000243138700013, abstract = {{Surface studies of ionic liquids are particularly important for all kinds of multiphasic operations employing ionic liquids, e.g. biphasic homogeneous catalysis or supported ionic liquid phase catalysis. Using X-ray photoelectron spectroscopy (XPS), the surface composition of the model system 1-ethyl-3-methylimidazolium ethylsulfate {[}EMIM]{[}EtOSO3] was investigated. By comparing two different samples of this ionic liquid from two different origins, we observed a decisive influence of silicon containing impurities on composition and structure of the surface. For the case of the impurities containing ionic liquid, our angle-dependent XPS data are in agreement with a model of a surface layer consisting of highly oriented ionic liquid molecules. From a fundamental point of view, our study may be of general relevance for the understanding, of the chemistry of liquid surfaces in general.}}, added-at = {2009-06-29T17:55:14.000+0200}, author = {Gottfried, J. M. and Maier, F. and Rossa, J. and Gerhard, D. and Schulz, P. S. and Wasserscheid, P. and Steinrueck, H. P.}, biburl = {https://www.bibsonomy.org/bibtex/2a4091cb18f7055fd4d13ad7614fd0834/psschulz}, doi = {{10.1524/zpch.2006.220.10.1439}}, interhash = {65fcba5cb67d5d1d105754eb3233f175}, intrahash = {a4091cb18f7055fd4d13ad7614fd0834}, issn = {{0942-9352}}, journal = {{ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY \& CHEMICAL PHYSICS}}, keywords = {Surface}, number = {{10-11}}, pages = {{1439-1453}}, timestamp = {2009-06-29T17:57:08.000+0200}, title = {{Surface studies on the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate using X-ray photoelectron spectroscopy (XPS)}}, unique-id = {{ISI:000243138700013}}, volume = {{220}}, year = {{2006}} }