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author:

Lin, L. (Lin, L..) [1] | Ye, X. (Ye, X..) [2] | Pan, H. (Pan, H..) [3] | Li, F. (Li, F..) [4] | Du, Y. (Du, Y..) [5]

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Abstract:

Graphdiyne (GDY), a novel two-dimensional (2D) carbon allotrope featuring sp- and sp2-hybridized carbon, boasts high electron mobility and an intrinsic direct band gap, making it a promising candidate for spin-based semiconductor device applications. However, its inherent nonmagnetism limits its potential in this area. In this study, we demonstrate that dual-doping GDY with fluorine (F) and hydroxyl (OH) groups can induce room-temperature (RT) ferromagnetism, the intensity of which can be modulated by adjusting the levels of F and OH dual-doping. Our experimental results and theoretical analyses reveal several key findings: (i) both dopants preferentially adsorb onto the chain structure of GDY, leading to local magnetic moments; (ii) OH groups deter clustering of F adatoms, thus enhancing magnetic-inducing efficiency; and (iii) these magnetic moments are coupled through superexchange interactions between magnetic 1,2,3-trimethylbenzene motifs. This carefully devised strategy not only facilitates the realization of RT ferromagnetic GDY but also paves the way for the development of GDY-based spintronic devices. This advancement could potentially broaden the scope of applications for this unique 2D material. © 2023 American Chemical Society.

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  • [ 1 ] [Lin L.]College of Physics and lnformation Engineering, Fuzhou University, Fuzhou, 350002, China
  • [ 2 ] [Lin L.]National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, China
  • [ 3 ] [Ye X.]College of Physics and lnformation Engineering, Fuzhou University, Fuzhou, 350002, China
  • [ 4 ] [Pan H.]School of Physics and Electronic Engineering, Linyi University, Linyi, 276005, China
  • [ 5 ] [Li F.]College of Physics and lnformation Engineering, Fuzhou University, Fuzhou, 350002, China
  • [ 6 ] [Du Y.]National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, China

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Source :

Chemistry of Materials

ISSN: 0897-4756

Year: 2023

Issue: 22

Volume: 35

Page: 9552-9561

7 . 2

JCR@2023

7 . 2 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:2

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ESI Highly Cited Papers on the List: 0 Unfold All

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Chinese Cited Count:

30 Days PV: 1

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