With the development of chiral materials, remarkable progress has been made in the application fields of biology, chemistry, and physics in the past decades. Here we develop a solo-Ag-nanowire(NW)-based, bottom-up chi...With the development of chiral materials, remarkable progress has been made in the application fields of biology, chemistry, and physics in the past decades. Here we develop a solo-Ag-nanowire(NW)-based, bottom-up chiral construction strategy to fabricate a chiral plasmonic film with strong chiroptical activity in the purple-blue band. Finitedifference time-domain simulations predict that helical structures made by Ag NWs with certain interlayer angles possess strong chiroptical intensity. We then apply a Langmuir-Blodgett technique to construct the layered NW assemblies with both handedness via regulating interlayer angle direction. The Ag NW assemblies show the interlayer-angleand film-thickness-dependent circular dichroism, reaching the highest anisotropic factor of 0.03. These new chiral structures will serve as ideal candidates for chiral sensors thanks to their specific plasmonic properties.展开更多
基金This work was supported by the National Key Research and Development Program of China(2021YFA1500400)the National Natural Science Foundation of China(22071226)+1 种基金the Funding of University of Science and Technology of China(KY2060000168,YD2060002013,KY2060000198)the Collaborative Innovation Program of Hefei Science Center,CAS(CX2060000017).
基金supported by the National Natural Science Foundation of China (22071226, 51732011, 21431006, 21761132008, 81788101, 11227901 and 11874164)the Funding of University of Science and Technology of China (KY2060000168 and YD2060002013)+2 种基金the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (21521001)the Key Research Program of Frontier Sciences, CAS (QYZDJ-SSW-SLH036)the Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS (2015HSC-UE007)。
文摘With the development of chiral materials, remarkable progress has been made in the application fields of biology, chemistry, and physics in the past decades. Here we develop a solo-Ag-nanowire(NW)-based, bottom-up chiral construction strategy to fabricate a chiral plasmonic film with strong chiroptical activity in the purple-blue band. Finitedifference time-domain simulations predict that helical structures made by Ag NWs with certain interlayer angles possess strong chiroptical intensity. We then apply a Langmuir-Blodgett technique to construct the layered NW assemblies with both handedness via regulating interlayer angle direction. The Ag NW assemblies show the interlayer-angleand film-thickness-dependent circular dichroism, reaching the highest anisotropic factor of 0.03. These new chiral structures will serve as ideal candidates for chiral sensors thanks to their specific plasmonic properties.
