@article{article_328180, title={Theoretical study of the structure and tautomerism of an asymmetric diimine Schiff base, preparation and characterization of its modified electrode}, journal={Gazi University Journal of Science}, volume={30}, pages={124–138}, year={2017}, author={Uzun, Demet and Aktan, Ebru and Güngör Özdemir, Özlem and Hasdemir, Erdoğan}, keywords={Modification,Electrochemical Impedance Spectroscopy,Contact Angle,Tautomerism,DFT}, abstract={<p> </p> <p class="MsoNormal" style="margin-bottom:.0001pt;text-align:justify;line-height:150%;"> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us">An </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;">asymmetric </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;"> <span lang="en-us" xml:lang="en-us">diimine
Schiff base, </span> </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us">2-((E)-4-((E)
-2-hydroxybenzylideneamino) benzylideneamino) phenol, was covered <span>to </span> a glassy carbon (GC) electrode
surface in nonaqueous medium to fabricate a modified electrode. </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us"> C </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us">yclic
voltammetry was applied for </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us"> the surface modification experiments in </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us">1
mM diimine solution. Cyclic voltammetry </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us">, contact angle measurement, electrochemical
impedance </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us"> </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us">spectroscopy </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us">and </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us"> X-ray </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us">
photoelectron spectroscopy techniques were employed to characterize </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us"> </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us">the modified GC (diimine-GC)
surface. Electrochemical impedance results showed that the modified surface
blocked the electron transfer with a 98.9% surface coverage value. </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;"> Additionally, theoretical study was performed to gain
insight into the structural and tautomeric aspects of the </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us">diimine Schiff base. </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;">The phenol-imine and keto-amine tautomerism forms of the </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us">diimine Schiff base </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;"> were investigated by using DFT calculations. </span> <span style="font-size:12pt;line-height:150%;font-family:’Times New Roman’, serif;" lang="en-us" xml:lang="en-us"> </span> </p>}, number={4}, publisher={Gazi University}