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Self-assembled gold nanoparticle/dendrimer composite films for vapor sensing applications

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons48459

Müllen,  Klaus
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons49044

Yasuda,  A.
MPI for Polymer Research, Max Planck Society;

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Zitation

Krasteva, N., Besnard, I., Guse, B., Bauer, R. E., Müllen, K., Yasuda, A., et al. (2002). Self-assembled gold nanoparticle/dendrimer composite films for vapor sensing applications. Nano Letters, 2(5), 551-555.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-660D-D
Zusammenfassung
Vapor-sensitive thin-film resistors comprising gold nanoparticles and different types of organic dendrimers (polyphenylene, poly(propylene imine) and poly(amidoamine)) were prepared via layer-by-layer self-assembly and characterized by UV/vis spectroscopy, atomic force microscopy, and conductivity measurements, While the metal nanoparticles were utilized to provide the film material with electric conductivity, the dendrimers served to cross-link the nanoparticles and to provide sites for the selective sorption of analyte molecules. Dosing the films with vapors of toluene, 1-propanol, and water significantly increased the film resistances. The chemical selectivity of this response was controlled by the solubility properties of the dendrimers.