AI Article Synopsis
- - Trivalent lanthanide complexes, like those with europium (Eu), are appealing because they emit pure colors, making them great for lighting applications.
- - The study highlights the use of specific triazine-based host molecules that, when paired with Eu(hfa)(TPPO), boost luminescence intensity significantly compared to traditional Eu(iii) complexes.
- - Energy transfer efficiency from the host molecules to the Eu(iii) ion is nearly 100%, indicating a promising method for creating efficient light-emitting devices through simpler production techniques.
Article Abstract
Trivalent lanthanide complexes are attractive light emitters owing to their ideal high color purity. Sensitization using ligands with high absorption efficiency is a powerful approach to enhancing photoluminescence intensity. However, the development of antenna ligands that can be used for sensitization is limited due to difficulties in controlling the coordination structures of lanthanides. When compared to conventional luminescent Eu(iii) complexes, a system composed of triazine-based host molecules and Eu(hfa)(TPPO) (hfa: hexafluoroacetylacetonato and TPPO: triphenylphosphine oxide) significantly increased total photoluminescence intensity. Energy transfer from the host molecules to the Eu(iii) ion occurs triplet states over several molecules, according to time-resolved spectroscopic studies, with nearly 100% efficiency. Our discovery paves the way for efficient light harvesting of Eu(iii) complexes with simple fabrication using a solution process.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10306081 | PMC |
| http://dx.doi.org/10.1039/d3sc01817b | DOI Listing |
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