Toward Near-Infrared Emission in Pt(II)-Cyclometallated Compounds: From Excimers' Formation to Aggregation-Induced Emission

Two series of Pt(II)-cyclometallated compounds containing N^C^N tridentate and alkynyl-chromophore ligands have been synthesized and structurally characterized. The N^C^N ligands differ on the presence of R1 = H or F in the central aromatic ring, while six different chromophores have been introduced...

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Autores: Lázaro Palacios, Ariadna, Bosque Pueyo, Ramón, Ward, Jas S., Rissanen, Kari, Crespo Vicente, Margarita Ma., Rodríguez Raurell, Laura
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/217086
Acceso en línea:https://hdl.handle.net/2445/217086
Access Level:acceso abierto
Palabra clave:Agregació (Química)
Compostos de metalls de transició
Lligands
Aggregation (Chemistry)
Transition metal compounds
Ligands
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spelling Toward Near-Infrared Emission in Pt(II)-Cyclometallated Compounds: From Excimers' Formation to Aggregation-Induced EmissionLázaro Palacios, AriadnaBosque Pueyo, RamónWard, Jas S.Rissanen, KariCrespo Vicente, Margarita Ma.Rodríguez Raurell, LauraAgregació (Química)Compostos de metalls de transicióLligandsAggregation (Chemistry)Transition metal compoundsLigandsTwo series of Pt(II)-cyclometallated compounds containing N^C^N tridentate and alkynyl-chromophore ligands have been synthesized and structurally characterized. The N^C^N ligands differ on the presence of R1 = H or F in the central aromatic ring, while six different chromophores have been introduced to the alkynyl moiety. Single-crystal X-ray structures for some of the compounds reveal the presence of weak intermolecular contacts responsible for the formation of some dimers or aggregates. The photophysical characterization shows the presence of two emission bands in solution assigned to the 3π–π* transition from the N^C^N ligands mixed with 3MLCT/3ILCT transitions (higher energy band) in deaerated samples. The formation of excimers has also been identified as a broad band at longer wavelengths [near-infrared (NIR) emission] that becomes the main emission band for compounds containing phenanthrene as the chromophore. NIR emission behavior has also been explored using acetonitrile/water mixtures, and the presence of aggregates that emit at ca. 650 nm has also been detected.American Chemical Society2024202420232024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion13 p.application/pdfhttps://hdl.handle.net/2445/217086Articles publicats en revistes (Química Inorgànica i Orgànica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1021/acs.inorgchem.2c03490Inorganic Chemistry, 2023, vol. 62, num.5, p. 1-13https://doi.org/10.1021/acs.inorgchem.2c03490cc-by (c) Lázaro Palacios, Ariadna, et al., 2023http://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2170862026-05-29T05:05:01Z
dc.title.none.fl_str_mv Toward Near-Infrared Emission in Pt(II)-Cyclometallated Compounds: From Excimers' Formation to Aggregation-Induced Emission
title Toward Near-Infrared Emission in Pt(II)-Cyclometallated Compounds: From Excimers' Formation to Aggregation-Induced Emission
spellingShingle Toward Near-Infrared Emission in Pt(II)-Cyclometallated Compounds: From Excimers' Formation to Aggregation-Induced Emission
Lázaro Palacios, Ariadna
Agregació (Química)
Compostos de metalls de transició
Lligands
Aggregation (Chemistry)
Transition metal compounds
Ligands
title_short Toward Near-Infrared Emission in Pt(II)-Cyclometallated Compounds: From Excimers' Formation to Aggregation-Induced Emission
title_full Toward Near-Infrared Emission in Pt(II)-Cyclometallated Compounds: From Excimers' Formation to Aggregation-Induced Emission
title_fullStr Toward Near-Infrared Emission in Pt(II)-Cyclometallated Compounds: From Excimers' Formation to Aggregation-Induced Emission
title_full_unstemmed Toward Near-Infrared Emission in Pt(II)-Cyclometallated Compounds: From Excimers' Formation to Aggregation-Induced Emission
title_sort Toward Near-Infrared Emission in Pt(II)-Cyclometallated Compounds: From Excimers' Formation to Aggregation-Induced Emission
dc.creator.none.fl_str_mv Lázaro Palacios, Ariadna
Bosque Pueyo, Ramón
Ward, Jas S.
Rissanen, Kari
Crespo Vicente, Margarita Ma.
Rodríguez Raurell, Laura
author Lázaro Palacios, Ariadna
author_facet Lázaro Palacios, Ariadna
Bosque Pueyo, Ramón
Ward, Jas S.
Rissanen, Kari
Crespo Vicente, Margarita Ma.
Rodríguez Raurell, Laura
author_role author
author2 Bosque Pueyo, Ramón
Ward, Jas S.
Rissanen, Kari
Crespo Vicente, Margarita Ma.
Rodríguez Raurell, Laura
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Agregació (Química)
Compostos de metalls de transició
Lligands
Aggregation (Chemistry)
Transition metal compounds
Ligands
topic Agregació (Química)
Compostos de metalls de transició
Lligands
Aggregation (Chemistry)
Transition metal compounds
Ligands
description Two series of Pt(II)-cyclometallated compounds containing N^C^N tridentate and alkynyl-chromophore ligands have been synthesized and structurally characterized. The N^C^N ligands differ on the presence of R1 = H or F in the central aromatic ring, while six different chromophores have been introduced to the alkynyl moiety. Single-crystal X-ray structures for some of the compounds reveal the presence of weak intermolecular contacts responsible for the formation of some dimers or aggregates. The photophysical characterization shows the presence of two emission bands in solution assigned to the 3π–π* transition from the N^C^N ligands mixed with 3MLCT/3ILCT transitions (higher energy band) in deaerated samples. The formation of excimers has also been identified as a broad band at longer wavelengths [near-infrared (NIR) emission] that becomes the main emission band for compounds containing phenanthrene as the chromophore. NIR emission behavior has also been explored using acetonitrile/water mixtures, and the presence of aggregates that emit at ca. 650 nm has also been detected.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/217086
url https://hdl.handle.net/2445/217086
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1021/acs.inorgchem.2c03490
Inorganic Chemistry, 2023, vol. 62, num.5, p. 1-13
https://doi.org/10.1021/acs.inorgchem.2c03490
dc.rights.none.fl_str_mv cc-by (c) Lázaro Palacios, Ariadna, et al., 2023
http://creativecommons.org/licenses/by/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Lázaro Palacios, Ariadna, et al., 2023
http://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 13 p.
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Química Inorgànica i Orgànica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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