Surface modulation of metal-organic frameworks for on-demand photochromism in the solid state
| Autor: | Mollick, Samraj, Zhang, Yang, Kamal, Waqas, Tricarico, Michele, Möslein, Annika F., Kachwal, Vishal, Amin, Nader, Castrejón-Pita, Alfonso A., Morris, Stephen M., Tan, Jin-Chong |
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| Rok vydání: | 2022 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Organic photoswitchable molecules have struggled in solid state form to fulfill their remarkable potential, in terms of photoswitching performance and long-term stability when compared to their inorganic counterparts. We report the concept of non-electron deficient host's surface with optimal porosity and hydrophobicity, as a priori strategy to design photoefficient organic solid-state photochromic materials with outstanding mechanical robustness. When exposed to a light stimulus including natural sunlight, the photoswitchable nanocomposite changes color promptly and reversibly, in a matter of seconds along with excellent photo-fatigue resistance, which are on a par with inorganic photochromes. Exemplars of commercially viable prototypes that are optically clear, comprising smart windows, complex photochromic sculptures, and self-erasing rewritable devices, were engineered by direct blending with resilient polymers; particularly, the use of high-stiffness polymer (> 2 GPa) is no longer an insurmountable challenge. Finally, photochromic films with anticounterfeiting features could be manufactured through precision inkjet printing of nanocrystals. Comment: 12 pages, 5 figures, Supplementary Information |
| Databáze: | arXiv |
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