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All-Solution Processed Single-Layer WOLEDs Using [Pt(salicylidenes)] as Guests in a PFO Matrix
Herein, we report the synthesis and characterization of two Pt(II) coordination compounds, the new platinum(II)[N,N′-bis(salicylidene)-3,4-diaminobenzophenone)] ([Pt(sal-3,4-ben)]) and the already well-known platinum(II)[N,N′-bis(salicylidene)-o-phenylenediamine] ([Pt(salophen)]), along with their a...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9316125/ https://www.ncbi.nlm.nih.gov/pubmed/35889721 http://dx.doi.org/10.3390/nano12142497 |
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author | Germino, José Carlos Duarte, Luís Gustavo Teixeira Alves Mendes, Rodrigo Araújo Faleiros, Marcelo Meira de Morais, Andreia de Freitas, Jilian Nei Pereira, Luiz Atvars, Teresa Dib Zambon |
author_facet | Germino, José Carlos Duarte, Luís Gustavo Teixeira Alves Mendes, Rodrigo Araújo Faleiros, Marcelo Meira de Morais, Andreia de Freitas, Jilian Nei Pereira, Luiz Atvars, Teresa Dib Zambon |
author_sort | Germino, José Carlos |
collection | PubMed |
description | Herein, we report the synthesis and characterization of two Pt(II) coordination compounds, the new platinum(II)[N,N′-bis(salicylidene)-3,4-diaminobenzophenone)] ([Pt(sal-3,4-ben)]) and the already well-known platinum(II)[N,N′-bis(salicylidene)-o-phenylenediamine] ([Pt(salophen)]), along with their application as guests in a poly [9,9-dioctylfluorenyl-2,7-diyl] (PFO) conjugated polymer in all-solution processed single-layer white organic light-emitting diodes. Completely different performances were achieved: 2.2% and 15.3% of external quantum efficiencies; 2.8 cd A(−1) and 12.1 cd A(−1) of current efficiencies; and 3103 cd m(−2) and 6224 cd m(−2) of luminance for the [Pt(salophen)] and [Pt(sal-3,4-ben)] complexes, respectively. The Commission Internationale de l’Eclairage (CIE 1931) chromaticity color coordinates are (0.33, 0.33) for both 0.1% mol/mol Pt(II):PFO composites at between approximately 3.2 and 8 V. The optoelectronic properties of doped and neat PFO films have been investigated, using steady-state and time-resolved photoluminescence. Theoretical calculations at the level of relativistic density functional theory explained these results, based on the presence of the Pt(II) central ion’s phosphorescence emission, considering spin-orbit coupling relationships. The overall results are explained, taking into account the active layer morphological properties, along with the device’s electric balance and the emitter’s efficiencies, according to deep-trap space-charge models. Considering the very simple structure of the device and the ease of synthesis of such compounds, the developed framework can offer a good trade-off for solution-deposited white organic light-emitting diodes (WOLEDs), with further applications in the field of lighting and signage. |
format | Online Article Text |
id | pubmed-9316125 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-93161252022-07-27 All-Solution Processed Single-Layer WOLEDs Using [Pt(salicylidenes)] as Guests in a PFO Matrix Germino, José Carlos Duarte, Luís Gustavo Teixeira Alves Mendes, Rodrigo Araújo Faleiros, Marcelo Meira de Morais, Andreia de Freitas, Jilian Nei Pereira, Luiz Atvars, Teresa Dib Zambon Nanomaterials (Basel) Article Herein, we report the synthesis and characterization of two Pt(II) coordination compounds, the new platinum(II)[N,N′-bis(salicylidene)-3,4-diaminobenzophenone)] ([Pt(sal-3,4-ben)]) and the already well-known platinum(II)[N,N′-bis(salicylidene)-o-phenylenediamine] ([Pt(salophen)]), along with their application as guests in a poly [9,9-dioctylfluorenyl-2,7-diyl] (PFO) conjugated polymer in all-solution processed single-layer white organic light-emitting diodes. Completely different performances were achieved: 2.2% and 15.3% of external quantum efficiencies; 2.8 cd A(−1) and 12.1 cd A(−1) of current efficiencies; and 3103 cd m(−2) and 6224 cd m(−2) of luminance for the [Pt(salophen)] and [Pt(sal-3,4-ben)] complexes, respectively. The Commission Internationale de l’Eclairage (CIE 1931) chromaticity color coordinates are (0.33, 0.33) for both 0.1% mol/mol Pt(II):PFO composites at between approximately 3.2 and 8 V. The optoelectronic properties of doped and neat PFO films have been investigated, using steady-state and time-resolved photoluminescence. Theoretical calculations at the level of relativistic density functional theory explained these results, based on the presence of the Pt(II) central ion’s phosphorescence emission, considering spin-orbit coupling relationships. The overall results are explained, taking into account the active layer morphological properties, along with the device’s electric balance and the emitter’s efficiencies, according to deep-trap space-charge models. Considering the very simple structure of the device and the ease of synthesis of such compounds, the developed framework can offer a good trade-off for solution-deposited white organic light-emitting diodes (WOLEDs), with further applications in the field of lighting and signage. MDPI 2022-07-20 /pmc/articles/PMC9316125/ /pubmed/35889721 http://dx.doi.org/10.3390/nano12142497 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Germino, José Carlos Duarte, Luís Gustavo Teixeira Alves Mendes, Rodrigo Araújo Faleiros, Marcelo Meira de Morais, Andreia de Freitas, Jilian Nei Pereira, Luiz Atvars, Teresa Dib Zambon All-Solution Processed Single-Layer WOLEDs Using [Pt(salicylidenes)] as Guests in a PFO Matrix |
title | All-Solution Processed Single-Layer WOLEDs Using [Pt(salicylidenes)] as Guests in a PFO Matrix |
title_full | All-Solution Processed Single-Layer WOLEDs Using [Pt(salicylidenes)] as Guests in a PFO Matrix |
title_fullStr | All-Solution Processed Single-Layer WOLEDs Using [Pt(salicylidenes)] as Guests in a PFO Matrix |
title_full_unstemmed | All-Solution Processed Single-Layer WOLEDs Using [Pt(salicylidenes)] as Guests in a PFO Matrix |
title_short | All-Solution Processed Single-Layer WOLEDs Using [Pt(salicylidenes)] as Guests in a PFO Matrix |
title_sort | all-solution processed single-layer woleds using [pt(salicylidenes)] as guests in a pfo matrix |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9316125/ https://www.ncbi.nlm.nih.gov/pubmed/35889721 http://dx.doi.org/10.3390/nano12142497 |
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