Molecular conducting magnetic heterostructures

Hu, Feng; Hu, Yong; Huang, Yulong; Li, Changning; Yang, Ruizhe; Ren, Shenqiang

doi:10.1039/c9tc05450b

Title: Molecular conducting magnetic heterostructures

Journal Article · 29 December 2019 · Journal of Materials Chemistry C

DOI: https://doi.org/10.1039/c9tc05450b · OSTI ID:1803439

Hu, Feng ^[1]; Hu, Yong ^[2]; Huang, Yulong ^[2];

^[2]; Yang, Ruizhe ^[2];

^[2]

State Univ. of New York (SUNY), Buffalo, NY (United States); OSTI
State Univ. of New York (SUNY), Buffalo, NY (United States)

Building molecular conducting magnets has been of considerable interest due to their metallic transport and magnetic properties. Conjugated aniline anions and transition-metal cations are recognized to synthesize such π–d interaction frameworks. Here, an interfacial assembly of quasi-two-dimensional aniline heterojunction frameworks is developed, which consists of a proton-aniline conducting layer (conductivity of 9.2 × 10² S cm^-1) and a transition metal–aniline magnetic layer. The two-dimensional aniline coordination framework with pronounced π–d interactions is indispensable for obtaining ordered spin states and metallic transport conductivity. We apply optical and Raman spectroscopy to study the interactions between the metal cations and nitrogen atoms in the aniline chains. The bilayer heterostructure maintains a high conductivity of 3.5 × 10² S cm^-1 and increased magnetization, while the coupling of metallic conducting and magnetic layers leads to an enhanced magnetoconductance of 0.4% under a magnetic field of 70 kOe.

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Research Organization:: Univ. at Buffalo, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0018631

OSTI ID:: 1803439

Journal Information:: Journal of Materials Chemistry C, Journal Name: Journal of Materials Chemistry C Journal Issue: 7 Vol. 8; ISSN 2050-7526

Publisher:: Royal Society of ChemistryCopyright Statement

Country of Publication:: United States

Language:: English

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