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Solvatochromic covalent organic frameworks
- Source :
- Nature Communications, Vol 9, Iss 1, Pp 1-8 (2018), Nature Communications
- Publication Year :
- 2018
- Publisher :
- Nature Portfolio, 2018.
-
Abstract
- Covalent organic frameworks (COFs) are an emerging class of highly tuneable crystalline, porous materials. Here we report the first COFs that change their electronic structure reversibly depending on the surrounding atmosphere. These COFs can act as solid-state supramolecular solvatochromic sensors that show a strong colour change when exposed to humidity or solvent vapours, dependent on vapour concentration and solvent polarity. The excellent accessibility of the pores in vertically oriented films results in ultrafast response times below 200 ms, outperforming commercially available humidity sensors by more than an order of magnitude. Employing a solvatochromic COF film as a vapour-sensitive light filter, we demonstrate a fast humidity sensor with full reversibility and stability over at least 4000 cycles. Considering their immense chemical diversity and modular design, COFs with fine-tuned solvatochromic properties could broaden the range of possible applications for these materials in sensing and optoelectronics.
- Subjects :
- Materials science
Science
Supramolecular chemistry
General Physics and Astronomy
Nanotechnology
02 engineering and technology
Electronic structure
010402 general chemistry
01 natural sciences
General Biochemistry, Genetics and Molecular Biology
medicine
lcsh:Science
0306 Physical Chemistry (incl. Structural)
Multidisciplinary
Solvatochromism
General Chemistry
0303 Macromolecular and Materials Chemistry
021001 nanoscience & nanotechnology
medicine.disease
0104 chemical sciences
Solvent
Covalent bond
lcsh:Q
0210 nano-technology
Porous medium
Vapours
Order of magnitude
Subjects
Details
- Language :
- English
- ISSN :
- 20411723
- Volume :
- 9
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Nature Communications
- Accession number :
- edsair.doi.dedup.....d1cd6531688b95d2e0ef94fae3881f5d