La@C82 as a spin-active filling of SWCNTs: ESR study of magnetic and photophysical properties
Electron microscopy (TEM) and electron spin resonance (ESR) were applied to characterize lanthanum metallofullerene (La@C82)-filled peapods. The peapods were prepared by encapsulation of La@C82 in SWCNTs, which were obtained by laser ablation technique in the presence of non-magnetic catalysts Pt :...
| Hlavní autoři: | , , , , , , , , , , , |
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| Médium: | Journal article |
| Jazyk: | English |
| Vydáno: |
2008
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| _version_ | 1826264337740726272 |
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| author | Círić, L Pierzchala, K Sienkiewicz, A Magrez, A Náfrádi, B Alexander, D Warner, J Shinohara, H Ruemmeli, M Pichler, T Briggs, G Forró, L |
| author_facet | Círić, L Pierzchala, K Sienkiewicz, A Magrez, A Náfrádi, B Alexander, D Warner, J Shinohara, H Ruemmeli, M Pichler, T Briggs, G Forró, L |
| author_sort | Círić, L |
| collection | OXFORD |
| description | Electron microscopy (TEM) and electron spin resonance (ESR) were applied to characterize lanthanum metallofullerene (La@C82)-filled peapods. The peapods were prepared by encapsulation of La@C82 in SWCNTs, which were obtained by laser ablation technique in the presence of non-magnetic catalysts Pt : Rh : Re. Empty fullerenes, C60, were used as separators for the spin-active La@C82. TEM analysis confirmed filling of peapods with both C60 and La@C82 molecules. ESR spectra acquired in the temperature range from 5 K to 295 K provided indirect evidence of encapsulation of the spin-active La@C82 in carbon nanotubes and pointed to marked differences in magnetic properties of peapods as a function of the relative concentration of La@C82. Preliminary ESR studies of the photo-physical properties of La@C82 in CS2 revealed that, under illumination with white light, La@C82 neither generated singlet oxygen nor was photoactive against a paramagnetic target, nitroxide radical (TEMPO). © 2008 Wiley-VCH Verlag GmbH and Co. KGaA. |
| first_indexed | 2024-03-06T20:06:11Z |
| format | Journal article |
| id | oxford-uuid:28f9db0e-e1c2-4173-820c-c69bf390c05a |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:06:11Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:28f9db0e-e1c2-4173-820c-c69bf390c05a2022-03-26T12:16:26ZLa@C82 as a spin-active filling of SWCNTs: ESR study of magnetic and photophysical propertiesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:28f9db0e-e1c2-4173-820c-c69bf390c05aEnglishSymplectic Elements at Oxford2008Círić, LPierzchala, KSienkiewicz, AMagrez, ANáfrádi, BAlexander, DWarner, JShinohara, HRuemmeli, MPichler, TBriggs, GForró, LElectron microscopy (TEM) and electron spin resonance (ESR) were applied to characterize lanthanum metallofullerene (La@C82)-filled peapods. The peapods were prepared by encapsulation of La@C82 in SWCNTs, which were obtained by laser ablation technique in the presence of non-magnetic catalysts Pt : Rh : Re. Empty fullerenes, C60, were used as separators for the spin-active La@C82. TEM analysis confirmed filling of peapods with both C60 and La@C82 molecules. ESR spectra acquired in the temperature range from 5 K to 295 K provided indirect evidence of encapsulation of the spin-active La@C82 in carbon nanotubes and pointed to marked differences in magnetic properties of peapods as a function of the relative concentration of La@C82. Preliminary ESR studies of the photo-physical properties of La@C82 in CS2 revealed that, under illumination with white light, La@C82 neither generated singlet oxygen nor was photoactive against a paramagnetic target, nitroxide radical (TEMPO). © 2008 Wiley-VCH Verlag GmbH and Co. KGaA. |
| spellingShingle | Círić, L Pierzchala, K Sienkiewicz, A Magrez, A Náfrádi, B Alexander, D Warner, J Shinohara, H Ruemmeli, M Pichler, T Briggs, G Forró, L La@C82 as a spin-active filling of SWCNTs: ESR study of magnetic and photophysical properties |
| title | La@C82 as a spin-active filling of SWCNTs: ESR study of magnetic and photophysical properties |
| title_full | La@C82 as a spin-active filling of SWCNTs: ESR study of magnetic and photophysical properties |
| title_fullStr | La@C82 as a spin-active filling of SWCNTs: ESR study of magnetic and photophysical properties |
| title_full_unstemmed | La@C82 as a spin-active filling of SWCNTs: ESR study of magnetic and photophysical properties |
| title_short | La@C82 as a spin-active filling of SWCNTs: ESR study of magnetic and photophysical properties |
| title_sort | la c82 as a spin active filling of swcnts esr study of magnetic and photophysical properties |
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