{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/101821"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/101821","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Scanning electrochemical microscopy with conducting polymer probes: Validation and applications","abstract":"Scanning electrochemical microscopy (SECM) is a useful technique for exploring redox and ionic processes on active materials. Here we explore how conducting polymers (CPs) offer several advantages as probe electrode material, given its versatility in the measurement of redox and ionic processes, resulting in a probe that can simultaneously respond to these two aspects. Our CP probes can be modified and fine-tuned to improve experimental parameters and they can be easily prepared by electrodeposition. In this paper, we show a new type of CP probe for SECM that retains the spatial resolution of conventional metal probes and introducing the possibility to exploit their properties to study a wider range of systems. To demonstrate the usefulness of the probe, an insulating substrate with conducting features was imaged with a Pt electrode, a film-coated electrode and a CP well-probe electrode. Sharp contrast was observed for both the CP well-probe and the Pt probe, proving the efficiency of the new electrode. Additionally, an organosulfur compound was used as mediator taking advantage of the electrocatalytic effect PEDOT and its resistance to fouling from S-derived species. Finally, these probes were also applied for ionic imaging in the absence of a redox mediator, taking advantage of the polymer charging current to assess the local electrochemical environment of the probe. The anion size was investigated for its influence in the detection of small concentration changes due to proximity to an insulating substrate. Conducting polymers were successfully employed as electrode materials for SECM probes, expanding the potential of this instrumental technique to unique mediators and systems.","abstract_html":"Scanning electrochemical microscopy (SECM) is a useful technique for exploring redox and ionic processes on active materials. Here we explore how conducting polymers (CPs) offer several advantages as probe electrode material, given its versatility in the measurement of redox and ionic processes, resulting in a probe that can simultaneously respond to these two aspects. Our CP probes can be modified and fine-tuned to improve experimental parameters and they can be easily prepared by electrodeposition. In this paper, we show a new type of CP probe for SECM that retains the spatial resolution of conventional metal probes and introducing the possibility to exploit their properties to study a wider range of systems. To demonstrate the usefulness of the probe, an insulating substrate with conducting features was imaged with a Pt electrode, a film-coated electrode and a CP well-probe electrode. Sharp contrast was observed for both the CP well-probe and the Pt probe, proving the efficiency of the new electrode. Additionally, an organosulfur compound was used as mediator taking advantage of the electrocatalytic effect PEDOT and its resistance to fouling from S-derived species. Finally, these probes were also applied for ionic imaging in the absence of a redox mediator, taking advantage of the polymer charging current to assess the local electrochemical environment of the probe. The anion size was investigated for its influence in the detection of small concentration changes due to proximity to an insulating substrate. Conducting polymers were successfully employed as electrode materials for SECM probes, expanding the potential of this instrumental technique to unique mediators and systems.","abstract_has_math":false,"creators":["Claudio-Cintron, Marie Angellie"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":["Rodríguez-López, Joaquín"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2018,"date_issued":"2018-09-27T16:47:34Z","date_published":"2018-09-27T16:47:34Z","updated_at":"2026-07-22T22:24:40Z","subjects":["conducting polymers, electrochemistry, scanning electrochemical microscopy"],"languages":["en"],"rights":["Copyright 2018 Marie Claudio-Cintron"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/101821","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Rodríguez-López, Joaquín"]},{"key":"dc:creator","label":"Author","values":["Claudio-Cintron, Marie Angellie"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2018-09-27T16:47:34Z","2020-09-28T09:15:08Z","2018-07-13","2018-08"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["conducting polymers, electrochemistry, scanning electrochemical microscopy"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2018 Marie Claudio-Cintron"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/101821"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Scanning electrochemical microscopy (SECM) is a useful technique for exploring redox and ionic processes on active materials. Here we explore how conducting polymers (CPs) offer several advantages as probe electrode material, given its versatility in the measurement of redox and ionic processes, resulting in a probe that can simultaneously respond to these two aspects. Our CP probes can be modified and fine-tuned to improve experimental parameters and they can be easily prepared by electrodeposition. In this paper, we show a new type of CP probe for SECM that retains the spatial resolution of conventional metal probes and introducing the possibility to exploit their properties to study a wider range of systems. To demonstrate the usefulness of the probe, an insulating substrate with conducting features was imaged with a Pt electrode, a film-coated electrode and a CP well-probe electrode. Sharp contrast was observed for both the CP well-probe and the Pt probe, proving the efficiency of the new electrode. Additionally, an organosulfur compound was used as mediator taking advantage of the electrocatalytic effect PEDOT and its resistance to fouling from S-derived species. Finally, these probes were also applied for ionic imaging in the absence of a redox mediator, taking advantage of the polymer charging current to assess the local electrochemical environment of the probe. The anion size was investigated for its influence in the detection of small concentration changes due to proximity to an insulating substrate. Conducting polymers were successfully employed as electrode materials for SECM probes, expanding the potential of this instrumental technique to unique mediators and systems.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2020-08-01","The student, Marie Claudio-Cintron, accepted the attached license on 2018-07-12 at 16:06.","The student, Marie Claudio-Cintron, submitted this Thesis for approval on 2018-07-12 at 16:14.","This Thesis was approved for publication on 2018-07-13 at 11:15.","DSpace SAF Submission Ingestion Package generated from Vireo submission #12854 on 2018-09-27 at 11:37:20","Made available in DSpace on 2018-09-27T16:47:34Z (GMT). No. of bitstreams: 2 CLAUDIO-CINTRON-THESIS-2018.pdf: 2440326 bytes, checksum: 70d8c0d20a514ce730db558d2a9c5857 (MD5) LICENSE.txt: 4218 bytes, checksum: 4b838722a4c4323331db2368f3d11fd7 (MD5) Previous issue date: 2018-07-13","Embargo set by: Seth Robbins for item 107922 Lift date: 2020-09-27T16:47:41Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited Restriction Lifted for Item 107922 on 2020-09-28T09:15:08Z."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Scanning electrochemical microscopy with conducting polymer probes: Validation and applications"]}]}],"canonical_facts":{"dc:contributor":["Rodríguez-López, Joaquín"],"dc:creator":["Claudio-Cintron, Marie Angellie"],"dc:date":["2018-09-27T16:47:34Z","2020-09-28T09:15:08Z","2018-07-13","2018-08"],"dc:description":["Scanning electrochemical microscopy (SECM) is a useful technique for exploring redox and ionic processes on active materials. Here we explore how conducting polymers (CPs) offer several advantages as probe electrode material, given its versatility in the measurement of redox and ionic processes, resulting in a probe that can simultaneously respond to these two aspects. Our CP probes can be modified and fine-tuned to improve experimental parameters and they can be easily prepared by electrodeposition. In this paper, we show a new type of CP probe for SECM that retains the spatial resolution of conventional metal probes and introducing the possibility to exploit their properties to study a wider range of systems. To demonstrate the usefulness of the probe, an insulating substrate with conducting features was imaged with a Pt electrode, a film-coated electrode and a CP well-probe electrode. Sharp contrast was observed for both the CP well-probe and the Pt probe, proving the efficiency of the new electrode. Additionally, an organosulfur compound was used as mediator taking advantage of the electrocatalytic effect PEDOT and its resistance to fouling from S-derived species. Finally, these probes were also applied for ionic imaging in the absence of a redox mediator, taking advantage of the polymer charging current to assess the local electrochemical environment of the probe. The anion size was investigated for its influence in the detection of small concentration changes due to proximity to an insulating substrate. Conducting polymers were successfully employed as electrode materials for SECM probes, expanding the potential of this instrumental technique to unique mediators and systems.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2020-08-01","The student, Marie Claudio-Cintron, accepted the attached license on 2018-07-12 at 16:06.","The student, Marie Claudio-Cintron, submitted this Thesis for approval on 2018-07-12 at 16:14.","This Thesis was approved for publication on 2018-07-13 at 11:15.","DSpace SAF Submission Ingestion Package generated from Vireo submission #12854 on 2018-09-27 at 11:37:20","Made available in DSpace on 2018-09-27T16:47:34Z (GMT). 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