Probing the Dipolar Coupling in a Heterospin Endohedral Fullerene–Phthalocyanine Dyad

Paramagnetic endohedral fullerenes and phthalocyanine (Pc) complexes are promising building blocks for molecular quantum information processing, for which tunable dipolar coupling is required. We have linked these two spin qubit candidates together and characterized the resulting electron paramagnet...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2016-02, Vol.138 (4), p.1313-1319
Main Authors: Zhou, Shen, Yamamoto, Masanori, Briggs, G. Andrew D, Imahori, Hiroshi, Porfyrakis, Kyriakos
Format: Article
Language:English
Subjects:
Copper - chemistry
Electron Spin Resonance Spectroscopy
Fullerenes - chemistry
Indoles - chemistry
Molecular Structure
Organometallic Compounds - chemistry
Polymerization
Ruthenium - chemistry
Stereoisomerism
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Summary:Paramagnetic endohedral fullerenes and phthalocyanine (Pc) complexes are promising building blocks for molecular quantum information processing, for which tunable dipolar coupling is required. We have linked these two spin qubit candidates together and characterized the resulting electron paramagnetic resonance properties, including the spin dipolar coupling between the fullerene spin and the copper spin. Having interpreted the distance-dependent coupling strength quantitatively and further discussed the antiferromagnetic aggregation effect of the CuPc moieties, we demonstrate two ways of tuning the dipolar coupling in such dyad systems: changing the spacer group and adjusting the solution concentration.
ISSN:0002-7863
1520-5126
DOI:10.1021/jacs.5b11641