Anchoring of Rare-Earth-Based Single-Molecule Magnets on Single-Walled Carbon Nanotubes

被引：149
作者：
Kyatskaya, Svetlana [3 ]
Ramon Galan-Mascaros, Jose [4 ]
Bogani, Lapo [1 ,2 ,5 ]
Hennrich, Frank [3 ]
Kappes, Manfred [3 ]
Wernsdorfer, Wolfgang [1 ,2 ]
Ruben, Mario [3 ]
机构：
[1] Inst Neel, F-38042 Grenoble, France
[2] Univ Grenoble 1, CNRS, F-38042 Grenoble, France
[3] KIT, Inst Nanotechnol, D-76021 Karlsruhe, Germany
[4] Inst Chem Res Catalonia ICIQ, E-43007 Tarragona, Spain
[5] Univ Stuttgart, Inst Phys 1, D-70550 Stuttgart, Germany
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 42期
关键词：
ELECTRONIC-STRUCTURE; MAGNETIZATION; BIS(PHTHALOCYANINATO)TERBIUM; SPINTRONICS; RELAXATION; COMPLEXES; PYRENE;
D O I：
10.1021/ja906165e
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new heteroleptic bis(phthalocyaninato)terbium(III) complex 1, bearing a pyrenyl group, exhibits temperature and frequency dependence of ac magnetic susceptibility, typical of single-molecule magnets. The complex was successfully attached to single-walled carbon nanotubes (SWNTs) using pi-pi interactions, yielding a 1-SWNT conjugate. The supramolecular grafting of 1 to SWNTs was proven qualitatively and quantitatively by high-resolution transmission electron microscopy, emission spectroscopy, and atomic force spectroscopy. Giving a clear magnetic fingerprint, the anisotropy energy barrier and the magnetic relaxation time of the 1-SWNT conjugate are both increased in comparison with the pure crystalline compound 1, likely due to the suppression of intermolecular interactions. The obtained results propose the 1-SWNT conjugate as a promising constituent unit in magnetic single-molecule measurements using molecular spintronics devices.
引用
收藏
页码：15143 / 15151
页数：9
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