Inkjet-Printed Photoluminescent Patterns of Aggregation-Induced-Emission Chromophores on Surface-Anchored Metal–Organic Frameworks
| Autor: | Ekaterina A. Dolgopolova, Natalia B. Shustova, Nicolò Baroni, Andrey Turshatov, Bryce S. Richards, Michael Adams, Stefan Schlisske, Christof Wöll, Gerardo Hernandez-Sosa, Ian A. Howard |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Photoluminescence Nanotechnology 02 engineering and technology Tetraphenylethylene Substrate (electronics) Chromophore engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Coating chemistry engineering General Materials Science Metal-organic framework Aggregation-induced emission Thin film 0210 nano-technology |
| Zdroj: | ACS Applied Materials & Interfaces. 10:25754-25762 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | Organic chromophores that exhibit aggregation-induced emission (AIE) are of interest for applications in displays, lighting, and sensing, because they can maintain efficient emission at high molecular concentrations in the solid state. Such advantages over conventional chromophores could allow thinner conversion layers of AIE chromophores to be realized, with benefits in terms of the efficiency of the optical outcoupling, thermal management, and response times. However, it is difficult to create large-area optical quality thin films of efficiently performing AIE chromophores. Here, we demonstrate that this can be achieved by using a surface-anchored metal-organic framework (SURMOF) thin film coating as a host substrate, into which the tetraphenylethylene (TPE)-based AIE chromophore can be printed. We demonstrate that the SURMOF constrains the AIE-chromophore molecular conformation, affording efficient performance even at low loading densities in the SURMOF. As the loading density of the AIE chromophore in the SURMOF is increased, its absorption and emission spectra are tuned due to increased interaction between AIE molecules, but the high photoluminescent quantum yield (PLQY = 50% for this AIE chromophore) is maintained. Lastly, we demonstrate that patterns of the AIE chromophore with 70 μm feature sizes can be easily created by inkjet printing onto the SURMOF substrate. These results foreshadow novel possibilities for the creation of patterned phosphor thin films utilizing AIE chromophores for display or lighting applications. |
| Databáze: | OpenAIRE |
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