Surface enhanced raman scattering monitoring of chain alignment in freely suspended nanomembranes

The molecular chain reorganization in freely standing membranes with encapsulated gold nanoparticles was studied with surface enhanced Raman scattering (SERS) in the course of their elastic deformations. The efficient SERS was enabled by optimizing the design of gold nanoparticle forming chainlike a...

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Bibliographic Details
Published in:Physical review letters 2005-09, Vol.95 (11), p.115503.1-115503.4, Article 115503
Main Authors: CHAOYANG JIANG, LIO, Wilber Y, TSUKRUK, Vladimir V
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals
Physics
Structure of solids and liquids
crystallography
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Summary:The molecular chain reorganization in freely standing membranes with encapsulated gold nanoparticles was studied with surface enhanced Raman scattering (SERS) in the course of their elastic deformations. The efficient SERS was enabled by optimizing the design of gold nanoparticle forming chainlike aggregates, thus creating an exceptional ability to conduct in situ monitoring. Small deformations resulted in the radial orientation of side phenyl rings of polymer backbones while larger deflections led to the polymer chains bridging adjacent nanoparticles within one-dimensional aggregates.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.95.115503