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説明:

Distinct from inorganic 2D nanomaterials (e.g., graphene, MoS2, etc,), self-assembled organic 2D materials are significant due to the unique advantages of fine structure tunability and functionality. Electronically and photofunctionally-active compounds (e.g., pentacene, p-sexiphenyl) are highly attractive for applications but are limited by difficult handling and the existence of only a few native structures of the compounds. Here, it is shown that a p-sexiphenyl derivative incorporated into 2D multilamellar sheets with chromophores oriented in the layers exhibits a significant polarization of photoluminescence. Highly emissive, amphiphilic sexiphenyl with hydrophilic/hydrophobic groups self-assembles at air–water interface with chromophore orientation in the resulting films being controlled by monolayer compression. Large-area multilamellar structures with p-sexiphenyl chromophores highly oriented against the 2D plane are prepared by consecutive film transfers. The 2D sheets exhibit significant polarization of photoluminescence with polarization ratio 0.8 between orthogonal in-plane axes. Notably, multilamellar structures cannot be established for the same p-sexiphenyl using thermotropic processing thus emphasizing the importance of the 2D sheet multilayer synthesis process. Amphiphile design can be applied for the tailored synthesis of large-area multilayered 2D sheets and used to construct highly efficient light-emitting devices.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: Sexiphenyl, 2D materials, Self-assembly, polarized fluorescence emission, Langmuir-Blodgett

刊行年月日: 2024-03-14

出版者: Wiley

掲載誌:

• Advanced Optical Materials (ISSN: 21951071) vol. 12 issue. 18 p. 1-8 2400177

研究助成金:

• Japan Science and Technology Corporation JPMJER2003
• Queensland Node of the Australian National Fabrication Facility ANFF-Q
• SERB-STAR #STR/2020/000053

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1002/adom.202400177

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更新時刻: 2024-11-22 16:30:48 +0900

MDRでの公開時刻: 2024-11-22 16:30:48 +0900