Assembled nanoparticle films with crown ether–metal ion 'sandwiches' as sensing mechanisms for metal ions
| Autor: | Lesley E. Russell, Kevin W. Kittredge, Rebecca R. Pompano, Michael C. Leopold |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
chemistry.chemical_classification
Materials science Mechanical Engineering Potassium Metal ions in aqueous solution Inorganic chemistry chemistry.chemical_element Dithiol Nanoparticle Metal chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials visual_art Monolayer visual_art.visual_art_medium General Materials Science Thin film Crown ether |
| Zdroj: | Journal of Materials Science. 42:7100-7108 |
| ISSN: | 1573-4803 0022-2461 |
| Popis: | Specialized nanoparticles known as monolayer-protected clusters (MPCs) were affixed with metal selective crown ether (CE) functional groups and assembled into novel thin films to form potential metal ion sensing materials. Films of MPCs modified with potassium specific 15-crown-5 ligands (CE-MPCs) were successfully assembled using both dithiol linkages and ester-coupling reactions. Film responses to potassium are observed spectroscopically as the manifestation of changing interparticle spacing within a film in the presence and absence of potassium. Growth dynamics, film structure, and metal response are examined. Additionally, the important role of flexibility, especially in the interconnectivity of the CE-MPCs within the film and between the CE groups themselves, is experimentally identified. |
| Databáze: | OpenAIRE |
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