title: Conformation modulated optical activity enhancement in chiral cysteine and au nanorod assemblies.
abstract: Assemblies of chiral cysteine (CYS) and Au nanorods (GNRs) are constructed in two typical patterns, end-to-end and side-by-side. Impressively, side-by-side assembled GNRs with CYS show obviously stronger plasmonic circular dichrosim (CD) response compared with the end-to-end assemblies. The corresponding theoretical calculation elucidates the intrinsic relationship among geometric structure, electromagnetic interaction, and induced plasmonic CD of the assemblies. This work will significantly benefit the design and application of plasmonic nanodevices with controllable chiroptical responses.
authors.affiliation: Laboratory of Nanomaterials, National Center for Nanoscience and Technology , Beijing 100190, P. R. China.
authors.forename: Bing
authors.initials: B
authors.lastname: Han
authors.forename: Zhening
authors.initials: Z
authors.lastname: Zhu
authors.forename: Zhengtao
authors.initials: Z
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Tang
mesh_terms: D003545:Cysteine / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry*; D009904:Optical Rotation; D013237:Stereoisomerism
chemical_list: D006046:Gold; D003545:Cysteine