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)[<i>N</i>,<i>N</i>′-bis(salicylidene)-3,4-diaminobenzophenone)] ([Pt(sal-3,4-ben)]) and the already well-known platinum(II)[<i>N</i>,<i>N</i>...
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MDPI AG
2022-07-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/14/2497 |
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| author | José Carlos Germino Luís Gustavo Teixeira Alves Duarte Rodrigo Araújo Mendes Marcelo Meira Faleiros Andreia de Morais Jilian Nei de Freitas Luiz Pereira Teresa Dib Zambon Atvars |
| author_facet | José Carlos Germino Luís Gustavo Teixeira Alves Duarte Rodrigo Araújo Mendes Marcelo Meira Faleiros Andreia de Morais Jilian Nei de Freitas Luiz Pereira Teresa Dib Zambon Atvars |
| author_sort | José Carlos Germino |
| collection | DOAJ |
| description | Herein, we report the synthesis and characterization of two Pt(II) coordination compounds, the new platinum(II)[<i>N</i>,<i>N</i>′-bis(salicylidene)-3,4-diaminobenzophenone)] ([Pt(sal-3,4-ben)]) and the already well-known platinum(II)[<i>N</i>,<i>N</i>′-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<sup>−1</sup> and 12.1 cd A<sup>−1</sup> of current efficiencies; and 3103 cd m<sup>−2</sup> and 6224 cd m<sup>−2</sup> 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. |
| first_indexed | 2024-03-09T06:06:31Z |
| format | Article |
| id | doaj.art-a2cc0d7aba664f66bbdeded61ca8b395 |
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| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T06:06:31Z |
| publishDate | 2022-07-01 |
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| series | Nanomaterials |
| spelling | doaj.art-a2cc0d7aba664f66bbdeded61ca8b3952023-12-03T12:03:45ZengMDPI AGNanomaterials2079-49912022-07-011214249710.3390/nano12142497All-Solution Processed Single-Layer WOLEDs Using [Pt(salicylidenes)] as Guests in a PFO MatrixJosé Carlos Germino0Luís Gustavo Teixeira Alves Duarte1Rodrigo Araújo Mendes2Marcelo Meira Faleiros3Andreia de Morais4Jilian Nei de Freitas5Luiz Pereira6Teresa Dib Zambon Atvars7Chemistry Institute, University of Campinas—UNICAMP, Campinas 13083-862, BrazilChemistry Institute, University of Campinas—UNICAMP, Campinas 13083-862, BrazilSão Carlos Institute of Chemistry, University of São Paulo—USP, São Carlos 13566-590, BrazilChemistry Institute, University of Campinas—UNICAMP, Campinas 13083-862, BrazilCenter for Information Technology Renato Archer—CTI, Campinas 13069-901, BrazilCenter for Information Technology Renato Archer—CTI, Campinas 13069-901, BrazilDepartment of Physics and i3N—Institute for Nanostructures, Nanomodelling and Nanofabrication, University of Aveiro, 3810-193 Aveiro, PortugalChemistry Institute, University of Campinas—UNICAMP, Campinas 13083-862, BrazilHerein, we report the synthesis and characterization of two Pt(II) coordination compounds, the new platinum(II)[<i>N</i>,<i>N</i>′-bis(salicylidene)-3,4-diaminobenzophenone)] ([Pt(sal-3,4-ben)]) and the already well-known platinum(II)[<i>N</i>,<i>N</i>′-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<sup>−1</sup> and 12.1 cd A<sup>−1</sup> of current efficiencies; and 3103 cd m<sup>−2</sup> and 6224 cd m<sup>−2</sup> 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.https://www.mdpi.com/2079-4991/12/14/2497white-OLEDplatinum(II) complexesphotoluminescencesolution-deposited devices |
| spellingShingle | José Carlos Germino Luís Gustavo Teixeira Alves Duarte Rodrigo Araújo Mendes Marcelo Meira Faleiros Andreia de Morais Jilian Nei de Freitas Luiz Pereira Teresa Dib Zambon Atvars All-Solution Processed Single-Layer WOLEDs Using [Pt(salicylidenes)] as Guests in a PFO Matrix Nanomaterials white-OLED platinum(II) complexes photoluminescence solution-deposited devices |
| 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 | white-OLED platinum(II) complexes photoluminescence solution-deposited devices |
| url | https://www.mdpi.com/2079-4991/12/14/2497 |
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