Integration of Optical Surface Structures with Chiral Nanocellulose for Enhanced Chiroptical Properties

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2020
Autor:innen
Yu, Shengtao
Kang, Saewon
Adstedt, Katarina M.
Nepal, Dhriti
Bunning, Timothy J.
Tsukruk, Vladimir V.
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Zusammenfassung

The integration of chiral organization with photonic structures found in many living creatures enables unique chiral photonic structures with a combination of selective light reflection, light propagation, and circular dichroism. Inspired by these natural integrated nanostructures, hierarchical chiroptical systems that combine imprinted surface optical structures with the natural chiral organization of cellulose nanocrystals are fabricated. Different periodic photonic surface structures with rich diffraction phenomena, including various optical gratings and microlenses, are replicated into nanocellulose film surfaces over large areas. The resulting films with embedded optical elements exhibit vivid, controllable structural coloration combined with highly asymmetric broadband circular dichroism and a microfocusing capability not typically found in traditional photonic bioderived materials without compromising their mechanical strength. The strategy of imprinting surface optical structures onto chiral biomaterials facilitates a range of prospective photonic applications, including stereoscopic displays, polarization encoding, chiral polarizers, and colorimetric chiral biosensing.

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540 Chemie
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asymmetric broadband circular dichroism, biophotonics, cellulose nanocrystals, chiral films, cholesteric phases, microlenses, surface gratings
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ISO 690XIONG, Rui, Shengtao YU, Saewon KANG, Katarina M. ADSTEDT, Dhriti NEPAL, Timothy J. BUNNING, Vladimir V. TSUKRUK, 2020. Integration of Optical Surface Structures with Chiral Nanocellulose for Enhanced Chiroptical Properties. In: Advanced Materials. Wiley. 2020, 32(2), 1905600. ISSN 0935-9648. eISSN 1521-4095. Available under: doi: 10.1002/adma.201905600
BibTex
@article{Xiong2020-01Integ-53682,
  year={2020},
  doi={10.1002/adma.201905600},
  title={Integration of Optical Surface Structures with Chiral Nanocellulose for Enhanced Chiroptical Properties},
  number={2},
  volume={32},
  issn={0935-9648},
  journal={Advanced Materials},
  author={Xiong, Rui and Yu, Shengtao and Kang, Saewon and Adstedt, Katarina M. and Nepal, Dhriti and Bunning, Timothy J. and Tsukruk, Vladimir V.},
  note={Article Number: 1905600}
}
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