DataVXAdvanced Optical MaterialsPaper
journal article·2024-05Open access

Dynamic Tunable Chiral Plasmonic Properties via Self‐Assembly on Helical Threads

Zhen Guo, Swagato Sarkar, Rongying Liu, Ying Zhang, Qing‐Tao Sheng, Guosong Chen, Tobias A. F. König, Chunhong Ye

Advanced Optical Materials· Volume 12· Issue 13
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Source abstract

Abstract

Abstract Tailorable chiral plasmonic nanostructures have attracted great interest due to their potential applications in photonics and sensing. However, there are limited straightforward fabrication routes to modulate the morphology of chiral materials with an external stimulus. Here, a helical assembly of gold nanospheres (AuNSs) is successfully obtained via self‐assembly using glycopeptide helical nanofibers as templates based on electrostatic interactions. The assembly morphology can be readily tailored from short debris to single‐/double‐ and multiple helical threads by changing pHs, resulting in well‐controlled modulation of circular dichroism (CD) in the visible range. Further, this tunable assembly and corresponding chiroptical properties are fully reversible in the pH range from 6 to 10. The electromagnetic simulation revealed how the structural geometries of AuNS helices changed the electromagnetic field propagation pattern to facilitate corresponding chiral optical properties. This approach is a unique and facilely obtained example of chiral nanomaterials with in situ tailoring morphology and chiral properties through external stimulus, demonstrating a potential application for biosensing.
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Research context

Nanomaterials

OpenAlex topics: Supramolecular Self-Assembly in Materials · Metamaterials and Metasurfaces Applications · Advanced biosensing and bioanalysis techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Physical Science and Technology ShanghaiTech University 393 Huaxia Middle Rd. Pudong Shanghai 201210 China

Leibniz‐Institut für Polymerforschung Dresden e.V. Hohe Straße 6 01069 Dresden Germany

The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science Fudan University 2205 Songhu Road Yangpu Shanghai 200433 China

School of Life Sciences Department of Chemical Biology Southern University of Science and Technology Shenzhen 518055 China

Laboratory for Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and Technology Qingdao 266237 China

Human Institute and School of Life Science and Technology ShanghaiTech University Shanghai 201210 China

Center for Advancing Electronics Dresden (cfaed) Technische Universität Dresden Bergstraße 66 01062 Dresden Germany

Faculty of Chemistry and Food Chemistry Technische Universität Dresden Bergstraße 66 01069 Dresden Germany

Funding

National Key Research and Development Program of China · Volkswagen Foundation · National Natural Science Foundation of China

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