Ultra-small, Uniform, and Single bcc-Phased FexCo1-x/Graphitic Shell Nanocrystals for T1 Magnetic Resonance Imaging Contrast Agents
We have synthesized ultra‐small and uniform FexCo1‐x/graphitic carbon shell (FexCo1‐x/GC) nanocrystals (x=0.13, 0.36, 0.42, 0.50, 0.56, and 0.62, respectively) with average diameters of
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| Veröffentlicht in: | Chemistry, an Asian journal an Asian journal, 2013-01, Vol.8 (1), p.290-295 |
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| container_title | Chemistry, an Asian journal |
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| creator | Choi, In Ae Li, Yan Kim, Da Jeong Pal, Mou Cho, Jee-Hyun Lee, Kyujoon Jung, Myung-Hwa Lee, Chulhyun Seo, Won Seok |
| description | We have synthesized ultra‐small and uniform FexCo1‐x/graphitic carbon shell (FexCo1‐x/GC) nanocrystals (x=0.13, 0.36, 0.42, 0.50, 0.56, and 0.62, respectively) with average diameters of |
| doi_str_mv | 10.1002/asia.201200950 |
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FexCo1‐x/GC nanocrystals as MRI agents: Ultra‐small, uniform, and single bcc‐phased FexCo1‐x/graphitic shell nanocrystals with average diameters of <4 nm are reported for the first time. The composition of the nanocrystals can be tuned by changing the Fe/Co ratio of the metal precursors. The single bcc‐phased FexCo1‐x/GC nanocrystals functionalized with phospholipid–poly(ethylene glycol) in solution are demonstrated to be excellent T1 MRI contrast agents.</description><identifier>ISSN: 1861-4728</identifier><identifier>EISSN: 1861-471X</identifier><identifier>DOI: 10.1002/asia.201200950</identifier><language>eng</language><publisher>Weinheim: WILEY-VCH Verlag</publisher><subject>alloys ; Chemistry ; Contrast agents ; graphitic shell ; magnetic resonance ; mesoporous materials ; Nanocrystals ; nanoparticles ; NMR ; Nuclear magnetic resonance</subject><ispartof>Chemistry, an Asian journal, 2013-01, Vol.8 (1), p.290-295</ispartof><rights>Copyright © 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim</rights><rights>Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fasia.201200950$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fasia.201200950$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27903,27904,45553,45554</link.rule.ids></links><search><creatorcontrib>Choi, In Ae</creatorcontrib><creatorcontrib>Li, Yan</creatorcontrib><creatorcontrib>Kim, Da Jeong</creatorcontrib><creatorcontrib>Pal, Mou</creatorcontrib><creatorcontrib>Cho, Jee-Hyun</creatorcontrib><creatorcontrib>Lee, Kyujoon</creatorcontrib><creatorcontrib>Jung, Myung-Hwa</creatorcontrib><creatorcontrib>Lee, Chulhyun</creatorcontrib><creatorcontrib>Seo, Won Seok</creatorcontrib><title>Ultra-small, Uniform, and Single bcc-Phased FexCo1-x/Graphitic Shell Nanocrystals for T1 Magnetic Resonance Imaging Contrast Agents</title><title>Chemistry, an Asian journal</title><addtitle>Chem. Asian J</addtitle><description>We have synthesized ultra‐small and uniform FexCo1‐x/graphitic carbon shell (FexCo1‐x/GC) nanocrystals (x=0.13, 0.36, 0.42, 0.50, 0.56, and 0.62, respectively) with average diameters of <4 nm by thermal decomposition of metal precursors in approximately 60 nm MCM‐41 and methane CVD. The composition of the FexCo1‐x/GC nanocrystals can be tuned by changing the Fe:Co ratios of the metal precursors. The FexCo1‐x/GC nanocrystals show superparamagnetic properties at room temperature. The Fe0.50Co0.50/GC, Fe0.56Co0.44/GC, and Fe0.62Co0.38/GC nanocrystals have a single bcc FeCo structure, whereas the Fe0.13Co0.87/GC, Fe0.36Co0.64/GC, and Fe0.42Co0.58/GC nanocrystals have a mixed structure of bcc FeCo and fcc Co. The single bcc‐phased FexCo1‐x/GC nanocrystals functionalized with phospholipid–poly(ethylene glycol) (PL–PEG) in phosphate buffered saline (PBS) are demonstrated to be excellent T1 MRI contrast agents.
FexCo1‐x/GC nanocrystals as MRI agents: Ultra‐small, uniform, and single bcc‐phased FexCo1‐x/graphitic shell nanocrystals with average diameters of <4 nm are reported for the first time. The composition of the nanocrystals can be tuned by changing the Fe/Co ratio of the metal precursors. The single bcc‐phased FexCo1‐x/GC nanocrystals functionalized with phospholipid–poly(ethylene glycol) in solution are demonstrated to be excellent T1 MRI contrast agents.</description><subject>alloys</subject><subject>Chemistry</subject><subject>Contrast agents</subject><subject>graphitic shell</subject><subject>magnetic resonance</subject><subject>mesoporous materials</subject><subject>Nanocrystals</subject><subject>nanoparticles</subject><subject>NMR</subject><subject>Nuclear magnetic resonance</subject><issn>1861-4728</issn><issn>1861-471X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNo9kM1PAjEQxTdGEz-vnpt4dXHa0u7ukRBFEvxcUW9NLVOoLl1slwhn_3GXYDjNTOb93ktekpxT6FAAdqWj0x0GlAEUAvaSI5pLmnYz-r6_21l-mBzH-AkgGBT5UfI7rpqg0zjXVXVJxt7ZOswvifYTUjo_rZB8GJM-znTECbnBVb-m6epqEPRi5hpnSDnDqiL32tcmrGOjq0haB_JCyZ2eetxInjHWXnuDZDjX09aU9GvfhsaG9Kbom3iaHNgWxLP_eZKMb65f-rfp6GEw7PdGqaNUQorAhbSAlmfWdI3NpC1kxoSW1hbagmXcUo5G5gXSrs1xAqKQ7ZMLnDBj-ElysfVdhPp7ibFRn_Uy-DZSUSbzTDAu81ZVbFU_rsK1WgQ312GtKKhNy2rTstq1rHrlsLe7Wjbdsi42uNqxOnwpmfFMqLf7gWLi9Yk9jkCV_A8aTIMy</recordid><startdate>201301</startdate><enddate>201301</enddate><creator>Choi, In Ae</creator><creator>Li, Yan</creator><creator>Kim, Da Jeong</creator><creator>Pal, Mou</creator><creator>Cho, Jee-Hyun</creator><creator>Lee, Kyujoon</creator><creator>Jung, Myung-Hwa</creator><creator>Lee, Chulhyun</creator><creator>Seo, Won Seok</creator><general>WILEY-VCH Verlag</general><general>WILEY‐VCH Verlag</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>K9.</scope></search><sort><creationdate>201301</creationdate><title>Ultra-small, Uniform, and Single bcc-Phased FexCo1-x/Graphitic Shell Nanocrystals for T1 Magnetic Resonance Imaging Contrast Agents</title><author>Choi, In Ae ; Li, Yan ; Kim, Da Jeong ; Pal, Mou ; Cho, Jee-Hyun ; Lee, Kyujoon ; Jung, Myung-Hwa ; Lee, Chulhyun ; Seo, Won Seok</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i1160-e0356f0ef37fc4cf76f96725a6ff9af0f23f13ec689e14f8ed05966ff35ed2cc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>alloys</topic><topic>Chemistry</topic><topic>Contrast agents</topic><topic>graphitic shell</topic><topic>magnetic resonance</topic><topic>mesoporous materials</topic><topic>Nanocrystals</topic><topic>nanoparticles</topic><topic>NMR</topic><topic>Nuclear magnetic resonance</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Choi, In Ae</creatorcontrib><creatorcontrib>Li, Yan</creatorcontrib><creatorcontrib>Kim, Da Jeong</creatorcontrib><creatorcontrib>Pal, Mou</creatorcontrib><creatorcontrib>Cho, Jee-Hyun</creatorcontrib><creatorcontrib>Lee, Kyujoon</creatorcontrib><creatorcontrib>Jung, Myung-Hwa</creatorcontrib><creatorcontrib>Lee, Chulhyun</creatorcontrib><creatorcontrib>Seo, Won Seok</creatorcontrib><collection>Istex</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><jtitle>Chemistry, an Asian journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Choi, In Ae</au><au>Li, Yan</au><au>Kim, Da Jeong</au><au>Pal, Mou</au><au>Cho, Jee-Hyun</au><au>Lee, Kyujoon</au><au>Jung, Myung-Hwa</au><au>Lee, Chulhyun</au><au>Seo, Won Seok</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ultra-small, Uniform, and Single bcc-Phased FexCo1-x/Graphitic Shell Nanocrystals for T1 Magnetic Resonance Imaging Contrast Agents</atitle><jtitle>Chemistry, an Asian journal</jtitle><addtitle>Chem. Asian J</addtitle><date>2013-01</date><risdate>2013</risdate><volume>8</volume><issue>1</issue><spage>290</spage><epage>295</epage><pages>290-295</pages><issn>1861-4728</issn><eissn>1861-471X</eissn><abstract>We have synthesized ultra‐small and uniform FexCo1‐x/graphitic carbon shell (FexCo1‐x/GC) nanocrystals (x=0.13, 0.36, 0.42, 0.50, 0.56, and 0.62, respectively) with average diameters of <4 nm by thermal decomposition of metal precursors in approximately 60 nm MCM‐41 and methane CVD. The composition of the FexCo1‐x/GC nanocrystals can be tuned by changing the Fe:Co ratios of the metal precursors. The FexCo1‐x/GC nanocrystals show superparamagnetic properties at room temperature. The Fe0.50Co0.50/GC, Fe0.56Co0.44/GC, and Fe0.62Co0.38/GC nanocrystals have a single bcc FeCo structure, whereas the Fe0.13Co0.87/GC, Fe0.36Co0.64/GC, and Fe0.42Co0.58/GC nanocrystals have a mixed structure of bcc FeCo and fcc Co. The single bcc‐phased FexCo1‐x/GC nanocrystals functionalized with phospholipid–poly(ethylene glycol) (PL–PEG) in phosphate buffered saline (PBS) are demonstrated to be excellent T1 MRI contrast agents.
FexCo1‐x/GC nanocrystals as MRI agents: Ultra‐small, uniform, and single bcc‐phased FexCo1‐x/graphitic shell nanocrystals with average diameters of <4 nm are reported for the first time. The composition of the nanocrystals can be tuned by changing the Fe/Co ratio of the metal precursors. The single bcc‐phased FexCo1‐x/GC nanocrystals functionalized with phospholipid–poly(ethylene glycol) in solution are demonstrated to be excellent T1 MRI contrast agents.</abstract><cop>Weinheim</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/asia.201200950</doi><tpages>6</tpages></addata></record> |
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| subjects | alloys Chemistry Contrast agents graphitic shell magnetic resonance mesoporous materials Nanocrystals nanoparticles NMR Nuclear magnetic resonance |
| title | Ultra-small, Uniform, and Single bcc-Phased FexCo1-x/Graphitic Shell Nanocrystals for T1 Magnetic Resonance Imaging Contrast Agents |
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