纳米花
手性(物理)
化学
圆二色性
十二烷基硫酸钠
旋光
肺表面活性物质
光学活性
手征对称破缺
化学工程
对称性破坏
结晶学
有机化学
Nambu–Jona Lasinio模型
物理
催化作用
工程类
量子力学
生物化学
作者
Yingying Duan,Xiao Liu,Lu Han,Shunsuke Asahina,Dongdong Xu,Yuanyuan Cao,Yuan Yao,Shunai Che
摘要
Helical symmetry can be found in most flowers with a rotation of contort petal aestivation. For micro- and nanoscale analogies, flower mimicking structures have been reproduced; however, the conceptual chirality of "nanoflowers" has not yet been defined. Here, the chirality of the "flower" was defined by its nanosized chiral structure and consequent optical activity (OA), opening new horizons for the physical theory and chiral materials. We report the surfactant-mediated hydrothermal synthesis of chiral CuO nanoflowers using sodium dodecyl sulfate (SDS) as a structure-directing agent, an amino alcohol as a symmetry-breaking agent, and cupric salt as the inorganic source. Two levels of hierarchical chirality exist for a CuO nanoflower including primary helically arranged "nanoflakes" and secondary helical "subnanopetals" that form "nanopetals". The nanoflowers exhibited a prominent optical response to circularly polarized light (CPL) at the absorption bands characteristic of CuO.
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