Fully Printed Flexible Chemiresistors with Tunable Selectivity Based on Gold Nanoparticles
| Autor: | Tobias Vossmeyer, Patrick P. Tjarks, Hendrik Schlicke, Bendix Ketelsen, Ying-Chih Liao |
|---|---|
| Přispěvatelé: | Publica |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Nanoparticle Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Analytical Chemistry lcsh:Biochemistry chemistry.chemical_compound sensor dispenser lcsh:QD415-436 Physical and Theoretical Chemistry Thin film chemiresistor FOIL method Chemiresistor nanoparticle Dithiol gold 021001 nanoscience & nanotechnology 0104 chemical sciences printing chemistry Colloidal gold Electrode inkjet flexible 0210 nano-technology Polyimide |
| Zdroj: | Chemosensors, Vol 8, Iss 116, p 116 (2020) Chemosensors Volume 8 Issue 4 |
| ISSN: | 2227-9040 |
| Popis: | This study presents a method for printing flexible chemiresistors comprising thin film transducers based on cross-linked gold nanoparticles (GNPs). First, interdigitated silver paste electrodes are printed onto polyimide (PI) foil via dispenser printing. Second, coatings of GNPs and dithiol/monothiol blends are inkjet-printed onto these electrode structures. 1,9-Nonanedithiol (9DT) is used as cross-linking agent and a variety of monothiols are added to tune the sensors&rsquo chemical selectivity. When dosing these sensors with different analyte vapors (n-octane, toluene, 4-methyl-2-pentanone, 1-butanol, 1-propanol, ethanol, water concentration range: 25&ndash 2000 ppm) they show fully reversible responses with short response and recovery times. The response isotherms follow a first-order Langmuir model, and their initial slopes reveal sensitivities of up to 4.5 × 10&minus 5 ppm&minus 1. Finally, it is demonstrated that arrays of printed sensors can be used to clearly discern analytes of different polarity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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