Enhanced optical asymmetry in supramolecular chiroplasmonic assemblies with long-range order
Abstract
The high polarizability of chiral nanoassemblies of plasmonic nanoparticles can lead to strong chiral dichroism, but strong light scattering causes the fraction of polarized photons generated, as measured by g-factors, to be much lower than that for chiral liquid crystals. Lu et al. used supramolecular interactions of gold nanorods with human islet amyloid peptides to assemble metallic superstructures with unusually high cholesteric order (see the Perspective by Nam and Kim). The long, straight helices increased the g-factor by 4600-fold, and this effect was used to screen small-molecule binding to amyloids.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 26, 2021
- Source ID
- 10.1126/science.abd8576
Entities
People
- André F de Moura
- Hu Zheng
- Jun Lu
- Kalil Bernardino
- Kun Liu
- Naomi Ramesar
- Nicholas A. Kotov
- Ning-Ning Zhang
- Shuhan Liu
- Tianmeng Sun
- Weverson R Gomes
- Yao Xue
Organizations
- Jilin University
- Universidade Federal de São Carlos
- University of Michigan
- University of São Paulo