Plasma-activated immobilization of biomolecules onto graphite-encapsulated magnetic nanoparticles
We describe the amino group surface functionalisation of graphite-encapsulated iron compound nanoparticles by radio frequency (RF) plasma processing followed by oxidized dextran immobilization. We have found that surface treatment using plasma represents an important step before biomolecules immobil...
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| Veröffentlicht in: | Carbon (New York) 2012-03, Vol.50 (3), p.1253-1261 |
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| creator | Saraswati, Teguh Endah Ogino, Akihisa Nagatsu, Masaaki |
| description | We describe the amino group surface functionalisation of graphite-encapsulated iron compound nanoparticles by radio frequency (RF) plasma processing followed by oxidized dextran immobilization. We have found that surface treatment using plasma represents an important step before biomolecules immobilization. After plasma treatment, the dispersion property of nanoparticles in dextran solution in water was significantly improved. The successful dextran immobilization was confirmed by X-ray photoelectron spectroscopy (XPS) and high resolution-transmission electron microscopy (HR-TEM) analyses followed by amino group derivatization using 4-(trifluoromethyl)-benzaldehyde (TFBA). As an evidence for covalent bonding between nanoparticles and dextran, the area percentage of deconvoluted C
N peak at ∼389.6
eV increased from 0% to 10.53
±
1.30% with increasing the dextran concentration. The result is consistent with the evidenced decreasing of the free amino group percentage from 68.09
±
5.10% to 14.73
±
5.89% on the nanoparticle surface after dextran immobilization. |
| doi_str_mv | 10.1016/j.carbon.2011.10.044 |
| format | Article |
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N peak at ∼389.6
eV increased from 0% to 10.53
±
1.30% with increasing the dextran concentration. The result is consistent with the evidenced decreasing of the free amino group percentage from 68.09
±
5.10% to 14.73
±
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N peak at ∼389.6
eV increased from 0% to 10.53
±
1.30% with increasing the dextran concentration. The result is consistent with the evidenced decreasing of the free amino group percentage from 68.09
±
5.10% to 14.73
±
5.89% on the nanoparticle surface after dextran immobilization.</description><subject>Biomolecules</subject><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>Covalence</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Dextrans</subject><subject>Dispersions</subject><subject>Exact sciences and technology</subject><subject>Fullerenes and related materials; diamonds, graphite</subject><subject>General and physical chemistry</subject><subject>Immobilization</subject><subject>Materials science</subject><subject>Nanoparticles</subject><subject>Physical and chemical studies. Granulometry. Electrokinetic phenomena</subject><subject>Physics</subject><subject>Radio frequencies</subject><subject>Specific materials</subject><subject>X-ray photoelectron spectroscopy</subject><issn>0008-6223</issn><issn>1873-3891</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp9kMtKAzEUhoMoWKtv4GI2gpupyWQ6l40gxRsUdNF9OMmcqSmZZEzSgj69qS0uXZ0L_38uHyHXjM4YZdXdZqbAS2dnBWUstWa0LE_IhDU1z3nTslMyoZQ2eVUU_JxchLBJZdmwckLg3UAYIAcV9Q4idpkeBie10d8QtbOZ6zOp3eAMqq3BkDkbXbb2MH7oiDlaBWPYml_nAGuLUavMgnUj-JQmxyU568EEvDrGKVk9Pa4WL_ny7fl18bDMVcnnMW8qXtKultDKFnnHacFR9hXjRUFblm5FBkXTIsoGoOpl3XSybinreq7aHviU3B7Gjt59bjFEMeig0Biw6LZBsKpmvK5ZSZO0PEiVdyF47MXo9QD-SzAq9kDFRhyAij3QfTcBTbab4wYICkzvwSod_rzFfF5V83TwlNwfdJi-3Wn0IiidQGGnPaooOqf_X_QDUw2QEw</recordid><startdate>20120301</startdate><enddate>20120301</enddate><creator>Saraswati, Teguh Endah</creator><creator>Ogino, Akihisa</creator><creator>Nagatsu, Masaaki</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20120301</creationdate><title>Plasma-activated immobilization of biomolecules onto graphite-encapsulated magnetic nanoparticles</title><author>Saraswati, Teguh Endah ; Ogino, Akihisa ; Nagatsu, Masaaki</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c435t-86340d7ba9b9e3d3023ebf61322091814e1a289eeb8aa6fb78db7901df3c9fa3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Biomolecules</topic><topic>Chemistry</topic><topic>Colloidal state and disperse state</topic><topic>Covalence</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Dextrans</topic><topic>Dispersions</topic><topic>Exact sciences and technology</topic><topic>Fullerenes and related materials; diamonds, graphite</topic><topic>General and physical chemistry</topic><topic>Immobilization</topic><topic>Materials science</topic><topic>Nanoparticles</topic><topic>Physical and chemical studies. Granulometry. Electrokinetic phenomena</topic><topic>Physics</topic><topic>Radio frequencies</topic><topic>Specific materials</topic><topic>X-ray photoelectron spectroscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Saraswati, Teguh Endah</creatorcontrib><creatorcontrib>Ogino, Akihisa</creatorcontrib><creatorcontrib>Nagatsu, Masaaki</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Carbon (New York)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Saraswati, Teguh Endah</au><au>Ogino, Akihisa</au><au>Nagatsu, Masaaki</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Plasma-activated immobilization of biomolecules onto graphite-encapsulated magnetic nanoparticles</atitle><jtitle>Carbon (New York)</jtitle><date>2012-03-01</date><risdate>2012</risdate><volume>50</volume><issue>3</issue><spage>1253</spage><epage>1261</epage><pages>1253-1261</pages><issn>0008-6223</issn><eissn>1873-3891</eissn><coden>CRBNAH</coden><abstract>We describe the amino group surface functionalisation of graphite-encapsulated iron compound nanoparticles by radio frequency (RF) plasma processing followed by oxidized dextran immobilization. We have found that surface treatment using plasma represents an important step before biomolecules immobilization. After plasma treatment, the dispersion property of nanoparticles in dextran solution in water was significantly improved. The successful dextran immobilization was confirmed by X-ray photoelectron spectroscopy (XPS) and high resolution-transmission electron microscopy (HR-TEM) analyses followed by amino group derivatization using 4-(trifluoromethyl)-benzaldehyde (TFBA). As an evidence for covalent bonding between nanoparticles and dextran, the area percentage of deconvoluted C
N peak at ∼389.6
eV increased from 0% to 10.53
±
1.30% with increasing the dextran concentration. The result is consistent with the evidenced decreasing of the free amino group percentage from 68.09
±
5.10% to 14.73
±
5.89% on the nanoparticle surface after dextran immobilization.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.carbon.2011.10.044</doi><tpages>9</tpages></addata></record> |
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| subjects | Biomolecules Chemistry Colloidal state and disperse state Covalence Cross-disciplinary physics: materials science rheology Dextrans Dispersions Exact sciences and technology Fullerenes and related materials diamonds, graphite General and physical chemistry Immobilization Materials science Nanoparticles Physical and chemical studies. Granulometry. Electrokinetic phenomena Physics Radio frequencies Specific materials X-ray photoelectron spectroscopy |
| title | Plasma-activated immobilization of biomolecules onto graphite-encapsulated magnetic nanoparticles |
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