Large refractive index changes in ZIF-8 thin films of optical quality
- authored by
- Nils Christian Keppler, Karen Deli Josephine Hindricks, Peter Behrens
- Abstract
ZIF-8 (zeolitic imidazolate framework-8) is a member of the growing family of metal-organic frameworks (MOFs). Homogeneous and crack-free ZIF-8 thin films of optical quality were crystallized on silicon and glass substrates. The refractive index of such ZIF-8 thin films in the complete visible light spectrum was directly determined for the first time. By incubating the porous films in different substances, the refractive index could be modulated over a wide range, two times larger than previously reported for MOF thin films. Reversible refractive index switching in ZIF-8 thin films was performed via the liquid and the gas phase. The ability to adjust the refractive index over a broad range enables the use of ZIF-8 films for applications in optical devices such as sensors, coatings for mirrors and lenses, or as an optical medium in more complex optical devices.
- Organisation(s)
-
Institute of Inorganic Chemistry
PhoenixD: Photonics, Optics, and Engineering - Innovation Across Disciplines
- Type
- Article
- Journal
- RSC Advances
- Volume
- 12
- Pages
- 5807-5815
- No. of pages
- 9
- ISSN
- 2046-2069
- Publication date
- 2022
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- Chemistry(all), Chemical Engineering(all)
- Electronic version(s)
-
https://doi.org/10.1039/d1ra08531j (Access:
Open)