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Low-Temperature Layer-by-Layer Growth of Semiconducting Few-Layer γ-Graphyne to Exploit Robust Biocompatibility

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Title
Low-Temperature Layer-by-Layer Growth of Semiconducting Few-Layer γ-Graphyne to Exploit Robust Biocompatibility
Author(s)
Jungsue Choi; Seo, Sohyeon; Lee, Seungeun; Ko, Hyun; Yongguang Luo; Han, Yeonsu; Shin, Jae Hee; Cho, Hansang; Hyoyoung Lee
Publication Date
2023-08
Journal
ACS Applied Materials & Interfaces, v.15, no.35, pp.41708 - 41719
Publisher
American Chemical Society
Abstract
Copyright © 2023 American Chemical Society. The sp-hybridized carbon network in single- or few-layer gamma-graphyne (gamma-GY) has a polarized electron distribution, which can be crucial in overcoming biosafety issues. Here, we report the low-temperature synthesis, electronic properties, and amyloid fibril nanostructures of electrostatic few-layer gamma-GY. ABC stacked gamma-GY is synthesized by layer-by-layer growth on a catalytic copper surface, exhibiting intrinsic p-type semiconducting properties in few-layer gamma-GY. Thickness-dependent electronic properties of gamma-GY elucidate interlayer interactions by electron doping between electrostatic layers and layer stacking-involved modulation of the band gap. Electrostatic few-layer gamma-GY induces high electronic sensitivity and intense interaction with amyloid beta (i.e., A beta(40)) peptides assembling into elongated mature A beta(40) fibrils. Two-dimensional biocompatible nanostructures of A beta(40) fibrils/ few-layer gamma-GY enable excellent cell viability and high neuronal differentiation of living cells without external stimulation.
URI
https://pr.ibs.re.kr/handle/8788114/14021
DOI
10.1021/acsami.3c08446
ISSN
1944-8244
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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