期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 18, 期 50, 页码 15954-15959出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201203017
关键词
anisotropy; chirality; circular dichroism; helical structures; mesoporous materials
资金
- National Natural Science Foundation of China [20890121]
- 973 project of China [2009CB930403]
Two-dimensional (2D) anisotropic silver nanowire (AgNW) arrays, fabricated inside chiral mesoporous silica (CMS), exhibited strong and tunable plasmon circular dichroism (CD) signals in the visible and near-IR regions due to collective dipole coupling between the anisotropic AgNWs. The multihelix with a helical channel orientation and helical arrays of opposite handedness in CMS played a predominant effects on the transversal and longitudinal chirality of the AgNWs, respectively.This behavior differs from both isotropic-nanoparticle and single-helix-induced CD responses. This system will provide new insight into the optical activity of metal inorganic nanoparticles capped with chiral organic molecules and assembled in chiral environments.
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