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Here, we employ few-layer hexagonal boron nitride (hBN) as a precisely tailorable fluorescence spacer between labelled lipid membranes and graphene substrates. By stacking high-quality hBN crystals in the 10–20 nm thickness range on monolayer graphene, we observe distance-dependent fluorescence intensity variations. Remarkably, with hBN spacers as thin as 20nm, the fluorescence intensity is comparable to bare SiO2/Si substrates, while the intensity was reduced to 60 % and 80 % with ~10 nm and ~16 nm hBN thicknesses respectively. We confirm that pre- determined hBN thicknesses can be employed to control the non-radiative energy transfer properties of graphene, with fluorescence quenching following a d^-4 distance-dependent behaviour. This seamless integration of electronically active and dielectric van der Waals materials into vertical heterostructures enables multifunctional platforms addressing the manipulation, localization, and visualization of biomolecules for fundamental biophysics and biosensing applications.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Fluorescence imaging, biomolecular dynamics, hBN

刊行年月日: 2024-03-08

出版者: Wiley

掲載誌:

• ChemNanoMat (ISSN: 2199692X) vol. 10 issue. 5 e202300592

研究助成金:

• Nederlandse Organisatie voor Wetenschappelijk Onderzoek MechanoPore

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1002/cnma.202300592

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更新時刻: 2025-02-14 12:32:02 +0900

MDRでの公開時刻: 2025-02-14 12:32:02 +0900