{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/73017"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/73017","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Single layer graphene as a stable and transparent electrode for the measurement of non-aqueous electrogenerated chemiluminescence and charge transfer inverse photoemission","abstract":"In this work we explore the use of single layer graphene (SLG) obtained by chemical vapor deposition as a transparent electrode material for use in coupled electrochemical and spectroscopic experiments in non-aqueous media through electrogenerated chemiluminescence (ECL). SLG was used with classical ECL luminophores, rubrene, tris(2,2′-bypyridine)-ruthenium(II) and 9,10-diphenylanthracene in an inert environment to generate stable electrochemical responses and measure light emission through the material. SLG displayed excellent stability during electrochemical potential stepping and voltammetry in a window that spanned at least from -2.4 V to +1.8 V versus a QRE in acetonitrile and acetonitrile/benzene with sufficiently facile electron transfer properties to yield stable voltammetric cycling and ECL. SLG electrodes patterned with poly-tetrafluoroethylene permitted the stable generation of radical ions on an SLG microelectrode to be studied through Scanning Electrochemical Microscopy (SECM) in the generation/collection mode. The transparency of graphene was used to obtain accurate spectral responses in ECL: while inner filter effects are known to cause a shift in peak emission wavelength of spectroelectrochemical studies, the use of SLG electrodes with detection through the graphene window reduced apparent peak shifts by up to 10 nm in wavelength. This work introduces SLG as a transparent, electrochemically active and chemically stable platform for studying ECL reactivity in the radical annihilation mode, where large electrode polarizations could compromise the chemical stability of other existing transparent electrodes. Additionally, steady state radical annihilation ECL was explored via thin layer cells and SECM.","abstract_html":"In this work we explore the use of single layer graphene (SLG) obtained by chemical vapor deposition as a transparent electrode material for use in coupled electrochemical and spectroscopic experiments in non-aqueous media through electrogenerated chemiluminescence (ECL). SLG was used with classical ECL luminophores, rubrene, tris(2,2′-bypyridine)-ruthenium(II) and 9,10-diphenylanthracene in an inert environment to generate stable electrochemical responses and measure light emission through the material. SLG displayed excellent stability during electrochemical potential stepping and voltammetry in a window that spanned at least from -2.4 V to +1.8 V versus a QRE in acetonitrile and acetonitrile/benzene with sufficiently facile electron transfer properties to yield stable voltammetric cycling and ECL. SLG electrodes patterned with poly-tetrafluoroethylene permitted the stable generation of radical ions on an SLG microelectrode to be studied through Scanning Electrochemical Microscopy (SECM) in the generation/collection mode. The transparency of graphene was used to obtain accurate spectral responses in ECL: while inner filter effects are known to cause a shift in peak emission wavelength of spectroelectrochemical studies, the use of SLG electrodes with detection through the graphene window reduced apparent peak shifts by up to 10 nm in wavelength. This work introduces SLG as a transparent, electrochemically active and chemically stable platform for studying ECL reactivity in the radical annihilation mode, where large electrode polarizations could compromise the chemical stability of other existing transparent electrodes. Additionally, steady state radical annihilation ECL was explored via thin layer cells and SECM.","abstract_has_math":false,"creators":["Cristarella, Teresa"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":["Rodriguez-Lopez, Joaquin"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-01-21T19:56:04Z","date_published":"2015-01-21T19:56:04Z","updated_at":"2026-07-22T22:26:07Z","subjects":["Electrochemistry","electrogenerated chemiluminescence","single layer graphene"],"languages":["en"],"rights":["Copyright 2014 Teresa Cristarella"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/73017","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Rodriguez-Lopez, Joaquin"]},{"key":"dc:creator","label":"Author","values":["Cristarella, Teresa"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-01-21T19:56:04Z","2017-01-22T10:15:29Z","2014-12","2015-01-21"]},{"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":["Electrochemistry","electrogenerated chemiluminescence","single layer graphene"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2014 Teresa Cristarella"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/73017"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["In this work we explore the use of single layer graphene (SLG) obtained by chemical vapor deposition as a transparent electrode material for use in coupled electrochemical and spectroscopic experiments in non-aqueous media through electrogenerated chemiluminescence (ECL). SLG was used with classical ECL luminophores, rubrene, tris(2,2′-bypyridine)-ruthenium(II) and 9,10-diphenylanthracene in an inert environment to generate stable electrochemical responses and measure light emission through the material. SLG displayed excellent stability during electrochemical potential stepping and voltammetry in a window that spanned at least from -2.4 V to +1.8 V versus a QRE in acetonitrile and acetonitrile/benzene with sufficiently facile electron transfer properties to yield stable voltammetric cycling and ECL. SLG electrodes patterned with poly-tetrafluoroethylene permitted the stable generation of radical ions on an SLG microelectrode to be studied through Scanning Electrochemical Microscopy (SECM) in the generation/collection mode. The transparency of graphene was used to obtain accurate spectral responses in ECL: while inner filter effects are known to cause a shift in peak emission wavelength of spectroelectrochemical studies, the use of SLG electrodes with detection through the graphene window reduced apparent peak shifts by up to 10 nm in wavelength. This work introduces SLG as a transparent, electrochemically active and chemically stable platform for studying ECL reactivity in the radical annihilation mode, where large electrode polarizations could compromise the chemical stability of other existing transparent electrodes. Additionally, steady state radical annihilation ECL was explored via thin layer cells and SECM.","Item withdrawn by Laura Spradlin (lspradl2@illinois.edu) on 2014-12-08T20:02:20Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Cristarella_Teresa.pdf: 2108168 bytes, checksum: 7c23fe6d131f99bda6ae29e06c228c18 (MD5)","Made available in DSpace on 2015-01-21T19:56:04Z (GMT). No. of bitstreams: 1 Teresa_Cristarella.pdf: 2108168 bytes, checksum: 7c23fe6d131f99bda6ae29e06c228c18 (MD5)","Embargo set by: Seth Robbins for item 73206 Lift date: 2017-01-21T19:56:18Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system","U of I Only Restriction Lifted for Item 73206 on 2017-01-22T10:15:29Z."]},{"key":"dc:title","label":"Title","values":["Single layer graphene as a stable and transparent electrode for the measurement of non-aqueous electrogenerated chemiluminescence and charge transfer inverse photoemission"]}]}],"canonical_facts":{"dc:contributor":["Rodriguez-Lopez, Joaquin"],"dc:creator":["Cristarella, Teresa"],"dc:date":["2015-01-21T19:56:04Z","2017-01-22T10:15:29Z","2014-12","2015-01-21"],"dc:description":["In this work we explore the use of single layer graphene (SLG) obtained by chemical vapor deposition as a transparent electrode material for use in coupled electrochemical and spectroscopic experiments in non-aqueous media through electrogenerated chemiluminescence (ECL). SLG was used with classical ECL luminophores, rubrene, tris(2,2′-bypyridine)-ruthenium(II) and 9,10-diphenylanthracene in an inert environment to generate stable electrochemical responses and measure light emission through the material. SLG displayed excellent stability during electrochemical potential stepping and voltammetry in a window that spanned at least from -2.4 V to +1.8 V versus a QRE in acetonitrile and acetonitrile/benzene with sufficiently facile electron transfer properties to yield stable voltammetric cycling and ECL. SLG electrodes patterned with poly-tetrafluoroethylene permitted the stable generation of radical ions on an SLG microelectrode to be studied through Scanning Electrochemical Microscopy (SECM) in the generation/collection mode. The transparency of graphene was used to obtain accurate spectral responses in ECL: while inner filter effects are known to cause a shift in peak emission wavelength of spectroelectrochemical studies, the use of SLG electrodes with detection through the graphene window reduced apparent peak shifts by up to 10 nm in wavelength. This work introduces SLG as a transparent, electrochemically active and chemically stable platform for studying ECL reactivity in the radical annihilation mode, where large electrode polarizations could compromise the chemical stability of other existing transparent electrodes. Additionally, steady state radical annihilation ECL was explored via thin layer cells and SECM.","Item withdrawn by Laura Spradlin (lspradl2@illinois.edu) on 2014-12-08T20:02:20Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Cristarella_Teresa.pdf: 2108168 bytes, checksum: 7c23fe6d131f99bda6ae29e06c228c18 (MD5)","Made available in DSpace on 2015-01-21T19:56:04Z (GMT). No. of bitstreams: 1 Teresa_Cristarella.pdf: 2108168 bytes, checksum: 7c23fe6d131f99bda6ae29e06c228c18 (MD5)","Embargo set by: Seth Robbins for item 73206 Lift date: 2017-01-21T19:56:18Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system","U of I Only Restriction Lifted for Item 73206 on 2017-01-22T10:15:29Z."],"dc:identifier":["http://hdl.handle.net/2142/73017"],"dc:language":["en"],"dc:rights":["Copyright 2014 Teresa Cristarella"],"dc:subject":["Electrochemistry","electrogenerated chemiluminescence","single layer graphene"],"dc:title":["Single layer graphene as a stable and transparent electrode for the measurement of non-aqueous electrogenerated chemiluminescence and charge transfer inverse photoemission"],"dc:type":["text"],"thesis:degree_discipline":["Chemistry"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:07Z"}