Aggregation-Induced Intermolecular Charge Transfer Emission for Solution-Processable Bipolar Host Material via Adjusting the Length of Alkyl Chain
Molecules with donor–spacer–acceptor configuration have been developed rapidly given their peculiar properties. How to utilize intermolecular interactions and charge transfers for solution-processed organic light-emitting diodes (OLEDs) greatly relies on molecular design strategy. Herein, soluble lu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/22/8099 |
| _version_ | 1797464365966819328 |
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| author | Wei Jiang Guimin Zhao Wenwen Tian Yueming Sun |
| author_facet | Wei Jiang Guimin Zhao Wenwen Tian Yueming Sun |
| author_sort | Wei Jiang |
| collection | DOAJ |
| description | Molecules with donor–spacer–acceptor configuration have been developed rapidly given their peculiar properties. How to utilize intermolecular interactions and charge transfers for solution-processed organic light-emitting diodes (OLEDs) greatly relies on molecular design strategy. Herein, soluble luminophores with D-spacer-A motif were constructed via shortening the alkyl chain from nonane to propane, where the alkyl chain was utilized as a spatial linker between the donor and acceptor. The alkyl chain blocks the molecular conjugation and induces the existence of aggregation-induced intermolecular CT emission, as well as the improved solubility and morphology in a solid-state film. In addition, the length of the alkyl chain affects the glass transition temperature, carrier transport and balance properties. The mCP-3C-TRZ with nonane as the spacer shows better thermal stability and bipolar carrier transport ability, so the corresponding solution-processable phosphorescent organic light-emitting diodes exhibit superior external quantum efficiency of 9.8% when using mCP-3C-TRZ as a host material. This work offers a promising strategy to establish a bipolar host via utilizing intermolecular charge transfer process in an aggregated state. |
| first_indexed | 2024-03-09T18:07:04Z |
| format | Article |
| id | doaj.art-8a914616f85f4dee844f3f07f641fe39 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T18:07:04Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-8a914616f85f4dee844f3f07f641fe392023-11-24T09:26:30ZengMDPI AGMolecules1420-30492022-11-012722809910.3390/molecules27228099Aggregation-Induced Intermolecular Charge Transfer Emission for Solution-Processable Bipolar Host Material via Adjusting the Length of Alkyl ChainWei Jiang0Guimin Zhao1Wenwen Tian2Yueming Sun3School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, ChinaSchool of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, ChinaSchool of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, ChinaSchool of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, ChinaMolecules with donor–spacer–acceptor configuration have been developed rapidly given their peculiar properties. How to utilize intermolecular interactions and charge transfers for solution-processed organic light-emitting diodes (OLEDs) greatly relies on molecular design strategy. Herein, soluble luminophores with D-spacer-A motif were constructed via shortening the alkyl chain from nonane to propane, where the alkyl chain was utilized as a spatial linker between the donor and acceptor. The alkyl chain blocks the molecular conjugation and induces the existence of aggregation-induced intermolecular CT emission, as well as the improved solubility and morphology in a solid-state film. In addition, the length of the alkyl chain affects the glass transition temperature, carrier transport and balance properties. The mCP-3C-TRZ with nonane as the spacer shows better thermal stability and bipolar carrier transport ability, so the corresponding solution-processable phosphorescent organic light-emitting diodes exhibit superior external quantum efficiency of 9.8% when using mCP-3C-TRZ as a host material. This work offers a promising strategy to establish a bipolar host via utilizing intermolecular charge transfer process in an aggregated state.https://www.mdpi.com/1420-3049/27/22/8099aggregation-induced intermolecular charge transfer emissionlength of alkyl chainglass transition temperaturecarrier transport and balancehost material |
| spellingShingle | Wei Jiang Guimin Zhao Wenwen Tian Yueming Sun Aggregation-Induced Intermolecular Charge Transfer Emission for Solution-Processable Bipolar Host Material via Adjusting the Length of Alkyl Chain Molecules aggregation-induced intermolecular charge transfer emission length of alkyl chain glass transition temperature carrier transport and balance host material |
| title | Aggregation-Induced Intermolecular Charge Transfer Emission for Solution-Processable Bipolar Host Material via Adjusting the Length of Alkyl Chain |
| title_full | Aggregation-Induced Intermolecular Charge Transfer Emission for Solution-Processable Bipolar Host Material via Adjusting the Length of Alkyl Chain |
| title_fullStr | Aggregation-Induced Intermolecular Charge Transfer Emission for Solution-Processable Bipolar Host Material via Adjusting the Length of Alkyl Chain |
| title_full_unstemmed | Aggregation-Induced Intermolecular Charge Transfer Emission for Solution-Processable Bipolar Host Material via Adjusting the Length of Alkyl Chain |
| title_short | Aggregation-Induced Intermolecular Charge Transfer Emission for Solution-Processable Bipolar Host Material via Adjusting the Length of Alkyl Chain |
| title_sort | aggregation induced intermolecular charge transfer emission for solution processable bipolar host material via adjusting the length of alkyl chain |
| topic | aggregation-induced intermolecular charge transfer emission length of alkyl chain glass transition temperature carrier transport and balance host material |
| url | https://www.mdpi.com/1420-3049/27/22/8099 |
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