期刊
ADVANCED MATERIALS TECHNOLOGIES
卷 7, 期 12, 页码 -出版社
WILEY
DOI: 10.1002/admt.202200395
关键词
gas sensors; metal-organic frameworks; optical sensing; optical waveguides; planar polymer waveguides
资金
- German Research Foundation (DFG) under Germany's Excellence Strategy within the Cluster of Excellence PhoenixD [EXC 2122, 390833453]
- Projekt DEAL
An easily fabricated gas sensor based on planar polymer optical waveguides with an integrated zeolite imidazole framework-8 (ZIF-8) thin film is presented for carbon dioxide detection and sensing. The sensor exhibits high sensitivity, rapid response, and excellent reversibility, showing potential for developing flexible on-chip gas sensors in an inexpensive and reproducible manner.
An easily fabricated gas sensor based on planar polymer optical waveguides with an integrated zeolite imidazole framework-8 (ZIF-8) thin film is presented for carbon dioxide detection and sensing. The planar optical waveguides are made of polymethylmethacrylate and fabricated by hot embossing, which makes it flexible and cost-efficient. Thin ZIF-8 films are uniformly grown on the waveguides surface through a simple solution method, which is crucial for the envisioned production of metal organic framework-based sensing devices on a large scale. Experimental results show that the produced optical elements exhibit a sensitivity of approximate to 2.5 mu W/5 vol% toward carbon dioxide (CO2) with very rapid response time (approximate to 6 s) and excellent reversibility of adsorption and desorption of the gas molecules. The demonstrated planar polymer sensing devices provide the potential to develop flexible on-chip gas sensors in an inexpensive and reproducible way.
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