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Aggregation-Induced Intermolecular Charge Transfer Emission for Solution-Processable Bipolar Host Material via Adjusting the Length of Alkyl Chain.
| Content Provider | Europe PMC |
|---|---|
| Author | Jiang, Wei Zhao, Guimin Tian, Wenwen Sun, Yueming |
| Editor | Kusukawa, Takahiro |
| Copyright Year | 2022 |
| Abstract | 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. |
| Journal | Molecules |
| Volume Number | 27 |
| DOI | 10.3390/molecules27228099 |
| PubMed Central reference number | PMC9698787 |
| Issue Number | 22 |
| PubMed reference number | 36432201 |
| e-ISSN | 14203049 |
| Language | English |
| Publisher | Molecular Diversity Preservation International (MDPI) |
| Publisher Date | 2022-11-21 |
| Access Restriction | Open |
| Subject Keyword | aggregation-induced intermolecular charge transfer emission length of alkyl chain glass transition temperature carrier transport and balance host material |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical and Theoretical Chemistry Medicine Chemistry Drug Discovery Pharmaceutical Science Analytical Chemistry Molecular Medicine Organic Chemistry |
