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. RI Ruben, Mario/C-6816-2008

Anchoring of Rare-Earth-Based Single-Molecule Magnets on Single-Walled Carbon Nanotubes / Kyatskaya S; Galan-Mascaros JR; Bogani L; Hennrich F; Kappes M; Wernsdorfer W; Ruben M. - In: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY. - ISSN 0002-7863. - 131:(2009), pp. 15143-15151. [10.1021/ja906165e]

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

Bogani L;
2009

Abstract

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. RI Ruben, Mario/C-6816-2008
2009
131
15143
15151
Kyatskaya S; Galan-Mascaros JR; Bogani L; Hennrich F; Kappes M; Wernsdorfer W; Ruben M
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1354657
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