Details
| Original language | English |
|---|---|
| Pages (from-to) | 5807-5815 |
| Number of pages | 9 |
| Journal | RSC Advances |
| Volume | 12 |
| Issue number | 10 |
| Early online date | 16 Feb 2022 |
| Publication status | Published - 2022 |
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.
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Chemical Engineering(all)
- General Chemical Engineering
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In: RSC Advances, Vol. 12, No. 10, 2022, p. 5807-5815.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Large refractive index changes in ZIF-8 thin films of optical quality
AU - Keppler, Nils Christian
AU - Hindricks, Karen Deli Josephine
AU - Behrens, Peter
N1 - Funding Information: This work is funded by the Deutsche Forschungsgemeinscha (DFG) under Germany's Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453). Karen Hindricks thanks the the Studienstiung des Deutschen Volkes (German National Academic Foundation) for a scholarship. The authors like to thank Hendrik A. Schulze (ACI, Leibniz University Hannover) for support in the early stages of this work. We also want to thank Sebastian Bengsch (IMPT, Leibniz University Hannover) for providing and cutting silicon wafers and Lars Klepzig (PCI, Leibniz University Hannover) for useful discussions. Our thanks also go to the NMR department of the Institute for Organic Chemistry at the Leibniz University Hannover.
PY - 2022
Y1 - 2022
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85126910580&partnerID=8YFLogxK
U2 - 10.1039/d1ra08531j
DO - 10.1039/d1ra08531j
M3 - Article
AN - SCOPUS:85126910580
VL - 12
SP - 5807
EP - 5815
JO - RSC Advances
JF - RSC Advances
SN - 2046-2069
IS - 10
ER -