%0 Journal Article %1 RN356 %A Santander-Nelli, M. %A Silva, C.P. %A Espinoza-Vergara, J. %A Silva, J.F. %A Olguin, C.F. %A Cortes-Arriagada, D. %A Zagal, J.H. %A Mendizabal, F. %A Diez-Perez, I. %A Pavez, J. %D 2017 %I 2017 Elsevier Ltd. %J Electrochimica Acta %K acceptor activity, arrays, assembly, bottom-up carbon chemistry, construction, dft, dqcauchile electrocatalytic electrode, graphite hardness, intermolecular iron metal metallophthalocyanines, model modified molecular nanoelectrode nanotube, nanotubes, phthalocyanines phthalocyanines, sams, set single substituted tetra-aminophthalocyanine, walled %P 201-213 %R 10.1016/j.electacta.2017.09.082 %T Tailoring Electroactive Surfaces by Non-Template Molecular Assembly. Towards Electrooxidation of L-Cysteine %U /brokenurl#<Go to ISI>://WOS:000413239600022 %V 254 %X We have prepared a nanoelectrode ensemble containing vertically aligned single walled carbon nanotubes (SWCNTs) using a non-template molecular self-assembling strategy. We used a bottom-up construction approach to assemble amino functionalized SWCNTs (af-SWCNTs) in a well-defined architecture. These af-SWCNTs were linked and vertically aligned to pre-formed self-assembled monolayers of 4-MBA. A Cobalt(II) tetracarboxyphthalocyanine (Co(COOH)(4)Pc) complex was covalently bonded to external portion of af-SWCNTs to complete the final nanoelectrode ensemble. X-ray photoelectron spectroscopy (XPS) and Atomic Force Microcopy (AFM) confirmed the effectiveness of the assembling steps on the gold surface starting from the Au/MBA SAMs. The system Au/4-MBA/af-SWCNTs shows an interface with large ordered array, which exhibits a high activity for the electrooxidation of L-cysteine (L-cys). Theoretical calculations suggest that the incorporation of the af-SWCNTs increased the activity of the assembly to electronic transfer and it was observed that the electrooxidation reaction is energetically favorable.

@article{RN356, abstract = {We have prepared a nanoelectrode ensemble containing vertically aligned single walled carbon nanotubes (SWCNTs) using a non-template molecular self-assembling strategy. We used a bottom-up construction approach to assemble amino functionalized SWCNTs (af-SWCNTs) in a well-defined architecture. These af-SWCNTs were linked and vertically aligned to pre-formed self-assembled monolayers of 4-MBA. A Cobalt(II) tetracarboxyphthalocyanine (Co(COOH)(4)Pc) complex was covalently bonded to external portion of af-SWCNTs to complete the final nanoelectrode ensemble. X-ray photoelectron spectroscopy (XPS) and Atomic Force Microcopy (AFM) confirmed the effectiveness of the assembling steps on the gold surface starting from the Au/MBA SAMs. The system Au/4-MBA/af-SWCNTs shows an interface with large ordered array, which exhibits a high activity for the electrooxidation of L-cysteine (L-cys). Theoretical calculations suggest that the incorporation of the af-SWCNTs increased the activity of the assembly to electronic transfer and it was observed that the electrooxidation reaction is energetically favorable. }, added-at = {2019-12-04T03:57:35.000+0100}, author = {Santander-Nelli, M. and Silva, C.P. and Espinoza-Vergara, J. and Silva, J.F. and Olguin, C.F. and Cortes-Arriagada, D. and Zagal, J.H. and Mendizabal, F. and Diez-Perez, I. and Pavez, J.}, biburl = {https://www.bibsonomy.org/bibtex/222af5057cfd033c2ef90ffe1172fd4ce/dqcauchile}, doi = {10.1016/j.electacta.2017.09.082}, interhash = {c6b53bbfcd081c66c60592456f71facd}, intrahash = {22af5057cfd033c2ef90ffe1172fd4ce}, issn = {0013-4686}, journal = {Electrochimica Acta}, keywords = {acceptor activity, arrays, assembly, bottom-up carbon chemistry, construction, dft, dqcauchile electrocatalytic electrode, graphite hardness, intermolecular iron metal metallophthalocyanines, model modified molecular nanoelectrode nanotube, nanotubes, phthalocyanines phthalocyanines, sams, set single substituted tetra-aminophthalocyanine, walled}, pages = {201-213}, publisher = {2017 Elsevier Ltd.}, timestamp = {2019-12-04T03:58:17.000+0100}, title = {Tailoring Electroactive Surfaces by Non-Template Molecular Assembly. Towards Electrooxidation of L-Cysteine}, type = {Journal Article}, url = {/brokenurl#<Go to ISI>://WOS:000413239600022}, volume = 254, year = 2017 }