Interrogating the Electrochemical Interface Using Sum Frequency Generation Spectroscopy

SFG in tandem with electrochemical capacitance and CV measurements are used to study the effects of applied potential on the adsorption and orientation of PABA at a Ag(111) surface. The data indicates that PABA changes orientation in response to the charge on the electrode surface, orienting one way positive of the potential of zero charge (pzc) and oppositely negative of the pzc. At positive potentials a phase change is observed associated with the formation of a condensed layer. These results show that the orientation of small molecule zwitterions can be controlled by applied potential.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemistry

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Schultz, Zachary Dale

Contributors dc:contributor

• Gewirth, Andrew A.

• Chemistry, Physical

Language dc:language

eng

Identifier

(MiAaPQ)AAI3199136

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/84202