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Updated: Jun 23, 2026
09:29
Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
Published on: September 27, 2011
12.3K
Ultrasonic Control of Polymer-Capped Plasmonic Molecules
Yingying Cai1, Swagato Sarkar2, Yuwen Peng1
1Institut für Physikalische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 6, 37077 Göttingen, Germany.
ACS Nano
|October 31, 2024
Summary
Controlled ultrasound treatment transforms 2D plasmonic molecules into 3D structures by shortening polymer bonds. This breakthrough enables precise control over nanoparticle assembly for advanced optical applications.
Area of Science:
- Nanotechnology
- Materials Science
- Physical Chemistry
Background:
- Plasmonic molecules (PMs) are emerging materials with tunable optical properties.
- Controlling nanoscale aggregation in PMs is crucial but challenging.
- Existing methods lack precise control over structural modifications.
Purpose of the Study:
- To demonstrate 2D/3D isomerization of plasmonic molecules.
- To investigate the effect of controlled ultrasound on PM structure.
- To achieve precise control over PM nanoarchitecture.
Main Methods:
- Self-assembly of gold nanoparticles functionalized with hydrogen bonding (HB) polymers into AB-type complexes.
- Controlled ultrasonication to induce interparticle polymer bundle cross-linking.
- Drop-casting to observe structural transitions from 2D to 3D configurations.
Main Results:
- Ultrasound treatment reduced polymer bond lengths from ~14 nm to ~2 nm.
- Enhanced HB cross-linking increased cluster stiffness.
- Achieved 100% yield of 2D to 3D isomerization during drop-casting.
Conclusions:
- Ultrasound provides precise control over PM structural isomerization.
- Shortened polymer bonds and increased stiffness drive the 2D to 3D transition.
- This method advances PM nanoarchitecture control for applications in sensing, optoelectronics, and metamaterials.
Keywords:
hydrogen bondnanostructuresplasmonic moleculespolymerself-assemblysupracolloidal assembliesultrasound-responsivenessMore Related Videos
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