Indigo in the nanochannels of zeolite L: Towards a new type of colorant
| Autor: | Nicola Zucchetto, Michael J. Reber, Lucie Sägesser, Dominik Brühwiler, Sandro Giger, Achim Ecker, Pascal Woodtli, Patrick Müller |
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| Rok vydání: | 2018 |
| Předmět: |
Steric effects
Reductive washing General Chemical Engineering Intercalation (chemistry) Nanochannel 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Host-Guest Indigo Coating Intercalation Organic chemistry Molecule Zeolite Chemistry Process Chemistry and Technology Microporous material 021001 nanoscience & nanotechnology 660: Technische Chemie 540: Chemie 0104 chemical sciences Chemical engineering engineering Diffuse reflection 0210 nano-technology |
| Zdroj: | Dyes and Pigments. 149:456-461 |
| ISSN: | 0143-7208 |
| Popis: | A host-guest based colorant was synthesized by intercalating indigo molecules into the nanochannels of zeolite L (ZL). Reductive washing thereby ensured the efficient and selective removal of non-intercalated indigo molecules. The UV-vis diffuse reflectance spectrum of the product after intercalation and reductive washing (designated as indigo-ZL) was found to resemble the solution spectrum of indigo, leading to the conclusion that the formation of indigo aggregates is prevented due to the steric constraints imposed by the microporous structure of ZL. The application of indigo-ZL on cotton was tested by roll coating. The light absorption properties of the resulting textile prints showed no significant alteration when compared to the pure indigo-ZL powder. The UV-vis diffuse reflectance spectra of mixtures consisting of indigo-ZL and a further ZL-based colorant were successfully predicted by the weighted addition of the respective primary spectra. |
| Databáze: | OpenAIRE |
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