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<p class="MsoNormal"><span lang="EN-US">Dear colleagues,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I would like to use QE ESM for a study of an effect of deprotonation of self-assembled monolayer of alkanethiols adsorbed on gold surface in aqueous solution (with pH = 8)
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">on the system work function and electrode surface charge. It is described as RCOOH + H2O -.> RCOO- + OH3+, creating an electrical double-layer at the SAM/solution interface.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The deprotonation causes a SPR red-shift and I am trying to explain it. As the system is neutral I can use ESM with bc1.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Could you please advise me how to introduce the charges of RCOO- and OH+ ions.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thank you.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Jiri Kanka<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Optical biosensors dpt.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Institute of Photonics and Electronics<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Czech Academy of Sciences<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Prague<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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