Understanding the Visible Absorption of Electron Accepting and Donating CNDs

Autores
Reva, Yana; Jana, Bikash; Langford, Daniel; Kinzelmann, Marina; Bo, Yifan; Schol, Peter R.; Scharl, Tobias; Zhao, Xinyi; Crisp, Ryan W.; Drewello, Thomas; Clark, Timothy; Cadranel, Alejandro; Guldi, Dirk
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Carbon nanodots (CNDs) synthesized from citric acid and formyl derivatives, that is, formamide, urea, or N-methylformamide, stand out through their broad-range visible-light absorbance and extraordinary photostability. Despite their potential, their use has thus far been limited to imaging research. This work has now investigated the link between CNDs’ photochemical properties and their chemical structure. Electron-rich, yellow carbon nanodots (yCNDs) are obtained with in situ addition of NaOH during the synthesis, whereas otherwise electron-poor, red carbon nanodots (rCNDs) are obtained. These properties originate from the reduced and oxidized dimer of citrazinic acid within the matrix of yCNDs and rCNDs, respectively. Remarkably, yCNDs deposited on TiO2 give a 30% higher photocurrent density of 0.7 mA cm−2 at +0.3 V versus Ag/AgCl under Xe-lamp irradiation (450 nm long-pass filter, 100 mW cm−2) than rCNDs. The difference in overall photoelectric performance is due to fundamentally different charge-transfer mechanisms. These depend on either the electron-accepting or the electron-donating nature of the CNDs, as is evident from photoelectrochemical tests with TiO2 and NiO and time-resolved spectroscopic measurements.
Fil: Reva, Yana. Universitat Erlangen-Nuremberg; Alemania
Fil: Jana, Bikash. Universitat Erlangen-Nuremberg; Alemania. Technion - Israel Institute of Technology; Israel
Fil: Langford, Daniel. Universitat Erlangen-Nuremberg; Alemania
Fil: Kinzelmann, Marina. Universitat Erlangen-Nuremberg; Alemania
Fil: Bo, Yifan. Universitat Erlangen-Nuremberg; Alemania
Fil: Schol, Peter R.. Universitat Erlangen-Nuremberg; Alemania
Fil: Scharl, Tobias. Universitat Erlangen-Nuremberg; Alemania
Fil: Zhao, Xinyi. Central South University; China. Universitat Erlangen-Nuremberg; Alemania
Fil: Crisp, Ryan W.. Universitat Erlangen-Nuremberg; Alemania
Fil: Drewello, Thomas. Universitat Erlangen-Nuremberg; Alemania
Fil: Clark, Timothy. Universitat Erlangen-Nuremberg; Alemania
Fil: Cadranel, Alejandro. Universitat Erlangen-Nuremberg; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Guldi, Dirk. Universitat Erlangen-Nuremberg; Alemania
Materia
CARBON NANODOTS
EXCITED STATE
PHOTOELECTROCHEMISTRY
SEMICONDUCTORS
TIME-RESOLVED SPECTROSCOPY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/228445
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/228445
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Understanding the Visible Absorption of Electron Accepting and Donating CNDsReva, YanaJana, BikashLangford, DanielKinzelmann, MarinaBo, YifanSchol, Peter R.Scharl, TobiasZhao, XinyiCrisp, Ryan W.Drewello, ThomasClark, TimothyCadranel, AlejandroGuldi, DirkCARBON NANODOTSEXCITED STATEPHOTOELECTROCHEMISTRYSEMICONDUCTORSTIME-RESOLVED SPECTROSCOPYhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Carbon nanodots (CNDs) synthesized from citric acid and formyl derivatives, that is, formamide, urea, or N-methylformamide, stand out through their broad-range visible-light absorbance and extraordinary photostability. Despite their potential, their use has thus far been limited to imaging research. This work has now investigated the link between CNDs’ photochemical properties and their chemical structure. Electron-rich, yellow carbon nanodots (yCNDs) are obtained with in situ addition of NaOH during the synthesis, whereas otherwise electron-poor, red carbon nanodots (rCNDs) are obtained. These properties originate from the reduced and oxidized dimer of citrazinic acid within the matrix of yCNDs and rCNDs, respectively. Remarkably, yCNDs deposited on TiO2 give a 30% higher photocurrent density of 0.7 mA cm−2 at +0.3 V versus Ag/AgCl under Xe-lamp irradiation (450 nm long-pass filter, 100 mW cm−2) than rCNDs. The difference in overall photoelectric performance is due to fundamentally different charge-transfer mechanisms. These depend on either the electron-accepting or the electron-donating nature of the CNDs, as is evident from photoelectrochemical tests with TiO2 and NiO and time-resolved spectroscopic measurements.Fil: Reva, Yana. Universitat Erlangen-Nuremberg; AlemaniaFil: Jana, Bikash. Universitat Erlangen-Nuremberg; Alemania. Technion - Israel Institute of Technology; IsraelFil: Langford, Daniel. Universitat Erlangen-Nuremberg; AlemaniaFil: Kinzelmann, Marina. Universitat Erlangen-Nuremberg; AlemaniaFil: Bo, Yifan. Universitat Erlangen-Nuremberg; AlemaniaFil: Schol, Peter R.. Universitat Erlangen-Nuremberg; AlemaniaFil: Scharl, Tobias. Universitat Erlangen-Nuremberg; AlemaniaFil: Zhao, Xinyi. Central South University; China. Universitat Erlangen-Nuremberg; AlemaniaFil: Crisp, Ryan W.. Universitat Erlangen-Nuremberg; AlemaniaFil: Drewello, Thomas. Universitat Erlangen-Nuremberg; AlemaniaFil: Clark, Timothy. Universitat Erlangen-Nuremberg; AlemaniaFil: Cadranel, Alejandro. Universitat Erlangen-Nuremberg; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Guldi, Dirk. Universitat Erlangen-Nuremberg; AlemaniaWiley VCH Verlag2023-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/228445Reva, Yana; Jana, Bikash; Langford, Daniel; Kinzelmann, Marina; Bo, Yifan; et al.; Understanding the Visible Absorption of Electron Accepting and Donating CNDs; Wiley VCH Verlag; Small; 19; 31; 2-2023; 1-101613-6810CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1002/smll.202207238info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/smll.202207238info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:07:27Zoai:ri.conicet.gov.ar:11336/228445instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:07:27.927CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Understanding the Visible Absorption of Electron Accepting and Donating CNDs
title Understanding the Visible Absorption of Electron Accepting and Donating CNDs
spellingShingle Understanding the Visible Absorption of Electron Accepting and Donating CNDs
Reva, Yana
CARBON NANODOTS
EXCITED STATE
PHOTOELECTROCHEMISTRY
SEMICONDUCTORS
TIME-RESOLVED SPECTROSCOPY
title_short Understanding the Visible Absorption of Electron Accepting and Donating CNDs
title_full Understanding the Visible Absorption of Electron Accepting and Donating CNDs
title_fullStr Understanding the Visible Absorption of Electron Accepting and Donating CNDs
title_full_unstemmed Understanding the Visible Absorption of Electron Accepting and Donating CNDs
title_sort Understanding the Visible Absorption of Electron Accepting and Donating CNDs
dc.creator.none.fl_str_mv Reva, Yana
Jana, Bikash
Langford, Daniel
Kinzelmann, Marina
Bo, Yifan
Schol, Peter R.
Scharl, Tobias
Zhao, Xinyi
Crisp, Ryan W.
Drewello, Thomas
Clark, Timothy
Cadranel, Alejandro
Guldi, Dirk
author Reva, Yana
author_facet Reva, Yana
Jana, Bikash
Langford, Daniel
Kinzelmann, Marina
Bo, Yifan
Schol, Peter R.
Scharl, Tobias
Zhao, Xinyi
Crisp, Ryan W.
Drewello, Thomas
Clark, Timothy
Cadranel, Alejandro
Guldi, Dirk
author_role author
author2 Jana, Bikash
Langford, Daniel
Kinzelmann, Marina
Bo, Yifan
Schol, Peter R.
Scharl, Tobias
Zhao, Xinyi
Crisp, Ryan W.
Drewello, Thomas
Clark, Timothy
Cadranel, Alejandro
Guldi, Dirk
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv CARBON NANODOTS
EXCITED STATE
PHOTOELECTROCHEMISTRY
SEMICONDUCTORS
TIME-RESOLVED SPECTROSCOPY
topic CARBON NANODOTS
EXCITED STATE
PHOTOELECTROCHEMISTRY
SEMICONDUCTORS
TIME-RESOLVED SPECTROSCOPY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Carbon nanodots (CNDs) synthesized from citric acid and formyl derivatives, that is, formamide, urea, or N-methylformamide, stand out through their broad-range visible-light absorbance and extraordinary photostability. Despite their potential, their use has thus far been limited to imaging research. This work has now investigated the link between CNDs’ photochemical properties and their chemical structure. Electron-rich, yellow carbon nanodots (yCNDs) are obtained with in situ addition of NaOH during the synthesis, whereas otherwise electron-poor, red carbon nanodots (rCNDs) are obtained. These properties originate from the reduced and oxidized dimer of citrazinic acid within the matrix of yCNDs and rCNDs, respectively. Remarkably, yCNDs deposited on TiO2 give a 30% higher photocurrent density of 0.7 mA cm−2 at +0.3 V versus Ag/AgCl under Xe-lamp irradiation (450 nm long-pass filter, 100 mW cm−2) than rCNDs. The difference in overall photoelectric performance is due to fundamentally different charge-transfer mechanisms. These depend on either the electron-accepting or the electron-donating nature of the CNDs, as is evident from photoelectrochemical tests with TiO2 and NiO and time-resolved spectroscopic measurements.
Fil: Reva, Yana. Universitat Erlangen-Nuremberg; Alemania
Fil: Jana, Bikash. Universitat Erlangen-Nuremberg; Alemania. Technion - Israel Institute of Technology; Israel
Fil: Langford, Daniel. Universitat Erlangen-Nuremberg; Alemania
Fil: Kinzelmann, Marina. Universitat Erlangen-Nuremberg; Alemania
Fil: Bo, Yifan. Universitat Erlangen-Nuremberg; Alemania
Fil: Schol, Peter R.. Universitat Erlangen-Nuremberg; Alemania
Fil: Scharl, Tobias. Universitat Erlangen-Nuremberg; Alemania
Fil: Zhao, Xinyi. Central South University; China. Universitat Erlangen-Nuremberg; Alemania
Fil: Crisp, Ryan W.. Universitat Erlangen-Nuremberg; Alemania
Fil: Drewello, Thomas. Universitat Erlangen-Nuremberg; Alemania
Fil: Clark, Timothy. Universitat Erlangen-Nuremberg; Alemania
Fil: Cadranel, Alejandro. Universitat Erlangen-Nuremberg; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Guldi, Dirk. Universitat Erlangen-Nuremberg; Alemania
description Carbon nanodots (CNDs) synthesized from citric acid and formyl derivatives, that is, formamide, urea, or N-methylformamide, stand out through their broad-range visible-light absorbance and extraordinary photostability. Despite their potential, their use has thus far been limited to imaging research. This work has now investigated the link between CNDs’ photochemical properties and their chemical structure. Electron-rich, yellow carbon nanodots (yCNDs) are obtained with in situ addition of NaOH during the synthesis, whereas otherwise electron-poor, red carbon nanodots (rCNDs) are obtained. These properties originate from the reduced and oxidized dimer of citrazinic acid within the matrix of yCNDs and rCNDs, respectively. Remarkably, yCNDs deposited on TiO2 give a 30% higher photocurrent density of 0.7 mA cm−2 at +0.3 V versus Ag/AgCl under Xe-lamp irradiation (450 nm long-pass filter, 100 mW cm−2) than rCNDs. The difference in overall photoelectric performance is due to fundamentally different charge-transfer mechanisms. These depend on either the electron-accepting or the electron-donating nature of the CNDs, as is evident from photoelectrochemical tests with TiO2 and NiO and time-resolved spectroscopic measurements.
publishDate 2023
dc.date.none.fl_str_mv 2023-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/228445
Reva, Yana; Jana, Bikash; Langford, Daniel; Kinzelmann, Marina; Bo, Yifan; et al.; Understanding the Visible Absorption of Electron Accepting and Donating CNDs; Wiley VCH Verlag; Small; 19; 31; 2-2023; 1-10
1613-6810
CONICET Digital
CONICET
url http://hdl.handle.net/11336/228445
identifier_str_mv Reva, Yana; Jana, Bikash; Langford, Daniel; Kinzelmann, Marina; Bo, Yifan; et al.; Understanding the Visible Absorption of Electron Accepting and Donating CNDs; Wiley VCH Verlag; Small; 19; 31; 2-2023; 1-10
1613-6810
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1002/smll.202207238
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/smll.202207238
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley VCH Verlag
publisher.none.fl_str_mv Wiley VCH Verlag
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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