Journal
ACS SENSORS
Volume 3, Issue 2, Pages 386-394Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssensors.7b00808
Keywords
optical fiber sensor; chemical sensor; small gases sensing; carbon dioxide sensing; metal-organic framework thin film
Funding
- National Energy Technology Laboratory's ongoing research under the RES Contract [DE-FE0004000]
- Department of Energy, National Energy Technology Laboratory, an agency of the United States Government through AECOM
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Integration of optical fiber with sensitive thin films offers great potential for the realization of novel chemical sensing platforms. In this study, we present a simple design strategy and high performance of nanoporous metal-organic framework (MOF) based optical gas sensors, which enables detection of a wide range of concentrations of small molecules based upon extremely small differences in refractive indices as a function of analyte adsorption within the MOF framework. Thin and compact MOF films can be uniformly formed and tightly bound on the surface of etched optical fiber through a simple solution method which is critical for manufacturability of MOF-based sensor devices. The resulting sensors show high sensitivity/selectivity to CO2 gas relative to other small gases (H-2, N-2, O-2, and CO) with rapid (
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