Highly transparent low-symmetry zinc phthalocyanine-based monolayers for NO2 gas detection
| Autor: | Anton Zasedatelev, Sergey Yu. Luchkin, Alexander Yu. Tolbin, D. M. Krichevsky, Larisa G. Tomilova, Vitally I. Krasovskii, Alexey B. Karpo |
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| Rok vydání: | 2017 |
| Předmět: |
Zinc phthalocyanine
Materials science Sensing applications Intermolecular force Metals and Alloys chemistry.chemical_element Nanotechnology 02 engineering and technology Surfaces and Interfaces Zinc 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry Chemical engineering Monolayer Amphiphile Materials Chemistry Thermal stability 0210 nano-technology Low symmetry |
| Zdroj: | Thin Solid Films. 642:295-302 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2017.10.001 |
| Popis: | We demonstrate the NO2 sensing properties of transparent two-dimensional organic films based on a low-symmetry zinc phthalocyanine (Pc) complexes. The amphiphilic nature of the Pc results in oriented monolayers on substrates, which provide an excellent conformation for Zn-NO2 interactions without strong Pc intermolecular aggregation. Using the Langmuir-Blodgett technique, we form single monolayer films on glass and show their potential for NO2 gas detection. We succeed in detecting 100 ppm NO2, 20 s after gas exposure. We also demonstrate total recovery of the sensing effect by simply heating up to 60 °C. By exhibiting high transparency (~ 97%) and thermal stability, together with low costs and simplicity in scaling the technology for large-area structures, the low-symmetry zinc Pc complexes appear to be highly promising materials for gas sensing applications. |
| Databáze: | OpenAIRE |
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