A spin-state switchable MOF-based film for visual DMSO vapor sensing
Yuwei Shen1, Soraya Bouras1, Latévi Max Lawson Daku2
1Institut des Matériaux Poreux de Paris, UMR 8004 CNRS, Ecole Normale Supérieure, ESPCI Paris, PSL University, 75005 Paris, France. antoine.tissot@ens.psl.eu.
None:
The design of new colorimetric sensors for the detection of volatile organic compounds (VOCs) is of high interest due to the health issues they can induce. In this study, we report the fabrication of a film composed of the spin crossover complex [Fe(Sal2trien)]NO3 embedded within metal-organic framework nanocrystals. This composite material demonstrates a selective and reversible colorimetric response to dimethyl sulfoxide (DMSO) vapor exposure at room temperature, which is attributed to a spin state switching from high-spin (HS) to low-spin (LS) of the Fe(III) centers upon DMSO adsorption (down to 15 ppmV). This work highlights the potential of integrating spin crossover complexes into MOFs to develop colorimetric and reusable VOC vapor sensors.
Related Concept Videos
The Fluid Mosaic Model
Membrane Fluidity
Phase Contrast and Differential Interference Contrast Microscopy
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
MOS Capacitor
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...


