Structural Characterization of Ultrasmall Superparamagnetic Iron Oxide (USPIO) Particles in Aqueous Suspension by Energy Dispersive X-ray Diffraction (EDXD)
Ultrasmall superparamagnetic iron oxide (USPIO) particles were structurally characterized in situ in an aqueous dilute suspension by energy dispersive X-ray diffraction (EDXD) and ex situ as powders obtained by lyophilization of the suspension by angular dispersive X-ray diffraction (ADXD) at 20 °C....
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| Veröffentlicht in: | Journal of the American Chemical Society 2006-08, Vol.128 (31), p.10054-10059 |
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| container_end_page | 10059 |
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| container_issue | 31 |
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| container_title | Journal of the American Chemical Society |
| container_volume | 128 |
| creator | Di Marco, Mariagrazia Port, Marc Couvreur, Patrick Dubernet, Catherine Ballirano, Paolo Sadun, Claudia |
| description | Ultrasmall superparamagnetic iron oxide (USPIO) particles were structurally characterized in situ in an aqueous dilute suspension by energy dispersive X-ray diffraction (EDXD) and ex situ as powders obtained by lyophilization of the suspension by angular dispersive X-ray diffraction (ADXD) at 20 °C. Structural parameters obtained by the Rietveld method on ADXD data were used as starting parameters for modeling the structure of the particles in suspension. Although each particle is a single crystal, as evidenced by conventional X-ray diffraction, our results indicate that the structural order, specific to a crystal, does not extend to the entire volume of the particle. In fact, each individual particle, averagely, has a crystalline structural extension ca. 4.0 nm smaller than the apparent dimensions obtained by both ADXD and TEM (ca. 8.0 nm). |
| doi_str_mv | 10.1021/ja061674y |
| format | Article |
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Am. Chem. Soc</addtitle><description>Ultrasmall superparamagnetic iron oxide (USPIO) particles were structurally characterized in situ in an aqueous dilute suspension by energy dispersive X-ray diffraction (EDXD) and ex situ as powders obtained by lyophilization of the suspension by angular dispersive X-ray diffraction (ADXD) at 20 °C. Structural parameters obtained by the Rietveld method on ADXD data were used as starting parameters for modeling the structure of the particles in suspension. Although each particle is a single crystal, as evidenced by conventional X-ray diffraction, our results indicate that the structural order, specific to a crystal, does not extend to the entire volume of the particle. In fact, each individual particle, averagely, has a crystalline structural extension ca. 4.0 nm smaller than the apparent dimensions obtained by both ADXD and TEM (ca. 8.0 nm).</description><subject>Chemistry</subject><subject>Exact sciences and technology</subject><subject>Ferric Compounds - chemistry</subject><subject>Inorganic chemistry and origins of life</subject><subject>Metal Nanoparticles</subject><subject>Molecular Structure</subject><subject>Preparations and properties</subject><subject>Water - chemistry</subject><subject>X-Ray Diffraction - methods</subject><issn>0002-7863</issn><issn>1520-5126</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNptkc-O0zAQxi0EYsvCgRdAvoC2h4AdN457XLVdqFSpRW3R3qzJxFlc8m_tBG15Fh4WR622F06jmfnN588zhLzn7DNnMf9yACa5TCfHF2TEk5hFCY_lSzJijMVRqqS4Im-8P4R0Eiv-mlxxqRSXQozI323neux6ByWd_QQH2Bln_0Bnm5o2Bd2XnQNfQVnSbd8a1wakgofadBbp0gVo_WRzQ2_2281yPaYbcKFTGk9tTW8fe9P0Pkz61tR-kMyOdFEb93CkcxuKztvfht5HDoZCUQzvD9jNYn4_H78lrwoovXl3jtdkf7fYzb5Fq_XX5ex2FYFQvIsA8ykIzCTkjKWIqchQQJELJiCRCcMUczZBE2dFrlSsDAJyUBNmUGUhE9fk00m3dU2w7DtdWY-mLKEe_GupUsaknAZwfALRNd47U-jW2QrcUXOmh1Po51ME9sNZtM8qk1_I8-4D8PEMgEcow99rtP7CKcaUkipw0YmzvjNPz31wv7RMRZro3War736sprvvM6HZRRfQ60PTuzrs7j8G_wEiEq92</recordid><startdate>20060809</startdate><enddate>20060809</enddate><creator>Di Marco, Mariagrazia</creator><creator>Port, Marc</creator><creator>Couvreur, Patrick</creator><creator>Dubernet, Catherine</creator><creator>Ballirano, Paolo</creator><creator>Sadun, Claudia</creator><general>American Chemical Society</general><scope>BSCLL</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20060809</creationdate><title>Structural Characterization of Ultrasmall Superparamagnetic Iron Oxide (USPIO) Particles in Aqueous Suspension by Energy Dispersive X-ray Diffraction (EDXD)</title><author>Di Marco, Mariagrazia ; Port, Marc ; Couvreur, Patrick ; Dubernet, Catherine ; Ballirano, Paolo ; Sadun, Claudia</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a381t-acd9a3cb6ad007cc73bc3afd303a5650c7cd04ce2bfd8828ecac1a840ec8b8ec3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Chemistry</topic><topic>Exact sciences and technology</topic><topic>Ferric Compounds - chemistry</topic><topic>Inorganic chemistry and origins of life</topic><topic>Metal Nanoparticles</topic><topic>Molecular Structure</topic><topic>Preparations and properties</topic><topic>Water - chemistry</topic><topic>X-Ray Diffraction - methods</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Di Marco, Mariagrazia</creatorcontrib><creatorcontrib>Port, Marc</creatorcontrib><creatorcontrib>Couvreur, Patrick</creatorcontrib><creatorcontrib>Dubernet, Catherine</creatorcontrib><creatorcontrib>Ballirano, Paolo</creatorcontrib><creatorcontrib>Sadun, Claudia</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of the American Chemical Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Di Marco, Mariagrazia</au><au>Port, Marc</au><au>Couvreur, Patrick</au><au>Dubernet, Catherine</au><au>Ballirano, Paolo</au><au>Sadun, Claudia</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Structural Characterization of Ultrasmall Superparamagnetic Iron Oxide (USPIO) Particles in Aqueous Suspension by Energy Dispersive X-ray Diffraction (EDXD)</atitle><jtitle>Journal of the American Chemical Society</jtitle><addtitle>J. Am. Chem. Soc</addtitle><date>2006-08-09</date><risdate>2006</risdate><volume>128</volume><issue>31</issue><spage>10054</spage><epage>10059</epage><pages>10054-10059</pages><issn>0002-7863</issn><eissn>1520-5126</eissn><coden>JACSAT</coden><abstract>Ultrasmall superparamagnetic iron oxide (USPIO) particles were structurally characterized in situ in an aqueous dilute suspension by energy dispersive X-ray diffraction (EDXD) and ex situ as powders obtained by lyophilization of the suspension by angular dispersive X-ray diffraction (ADXD) at 20 °C. Structural parameters obtained by the Rietveld method on ADXD data were used as starting parameters for modeling the structure of the particles in suspension. Although each particle is a single crystal, as evidenced by conventional X-ray diffraction, our results indicate that the structural order, specific to a crystal, does not extend to the entire volume of the particle. 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| subjects | Chemistry Exact sciences and technology Ferric Compounds - chemistry Inorganic chemistry and origins of life Metal Nanoparticles Molecular Structure Preparations and properties Water - chemistry X-Ray Diffraction - methods |
| title | Structural Characterization of Ultrasmall Superparamagnetic Iron Oxide (USPIO) Particles in Aqueous Suspension by Energy Dispersive X-ray Diffraction (EDXD) |
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