Two distinct fluorescent quantum clusters of gold starting from metallic nanoparticles by pH-dependent ligand etching
Two fluorescent quantum clusters of gold, namely Au 25 and Au 8 , have been synthesized from mercaptosuccinic acid-protected gold nanoparticles of 4–5 nm core diameter by etching with excess glutathione. While etching at pH ∼3 yielded Au 25 , that at pH 7–8 yielded Au 8 . This is the first report of...
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| Veröffentlicht in: | Nano research 2008-10, Vol.1 (4), p.333-340 |
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| creator | Habeeb Muhammed, Madathumpady Abubaker Ramesh, Subramani Sinha, Sudarson Sekhar Pal, Samir Kumar Pradeep, Thalappil |
| description | Two fluorescent quantum clusters of gold, namely Au
25
and Au
8
, have been synthesized from mercaptosuccinic acid-protected gold nanoparticles of 4–5 nm core diameter by etching with excess glutathione. While etching at pH ∼3 yielded Au
25
, that at pH 7–8 yielded Au
8
. This is the first report of the synthesis of two quantum clusters starting from a single precursor. This simple method makes it possible to synthesize well-defined clusters in gram quantities. Since these clusters are highly fluorescent and are highly biocompatible due to their low metallic content, they can be used for diagnostic applications. |
| doi_str_mv | 10.1007/s12274-008-8035-2 |
| format | Article |
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25
and Au
8
, have been synthesized from mercaptosuccinic acid-protected gold nanoparticles of 4–5 nm core diameter by etching with excess glutathione. While etching at pH ∼3 yielded Au
25
, that at pH 7–8 yielded Au
8
. This is the first report of the synthesis of two quantum clusters starting from a single precursor. This simple method makes it possible to synthesize well-defined clusters in gram quantities. Since these clusters are highly fluorescent and are highly biocompatible due to their low metallic content, they can be used for diagnostic applications.</description><identifier>ISSN: 1998-0124</identifier><identifier>EISSN: 1998-0000</identifier><identifier>DOI: 10.1007/s12274-008-8035-2</identifier><language>eng</language><publisher>Heidelberg: Tsinghua Press</publisher><subject>Atomic/Molecular Structure and Spectra ; Biomedicine ; Biotechnology ; Chemistry and Materials Science ; Clusters ; Condensed Matter Physics ; Etching ; Gold ; Materials Science ; Nanocomposites ; Nanomaterials ; Nanoparticles ; Nanostructure ; Nanotechnology ; Research Article</subject><ispartof>Nano research, 2008-10, Vol.1 (4), p.333-340</ispartof><rights>Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2008</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c419t-ed05f2a2e4e822679863e21fdf8f873dd038a283c51b021e1a8e2e682d9e27783</citedby><cites>FETCH-LOGICAL-c419t-ed05f2a2e4e822679863e21fdf8f873dd038a283c51b021e1a8e2e682d9e27783</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s12274-008-8035-2$$EPDF$$P50$$Gspringer$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s12274-008-8035-2$$EHTML$$P50$$Gspringer$$Hfree_for_read</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Habeeb Muhammed, Madathumpady Abubaker</creatorcontrib><creatorcontrib>Ramesh, Subramani</creatorcontrib><creatorcontrib>Sinha, Sudarson Sekhar</creatorcontrib><creatorcontrib>Pal, Samir Kumar</creatorcontrib><creatorcontrib>Pradeep, Thalappil</creatorcontrib><title>Two distinct fluorescent quantum clusters of gold starting from metallic nanoparticles by pH-dependent ligand etching</title><title>Nano research</title><addtitle>Nano Res</addtitle><description>Two fluorescent quantum clusters of gold, namely Au
25
and Au
8
, have been synthesized from mercaptosuccinic acid-protected gold nanoparticles of 4–5 nm core diameter by etching with excess glutathione. While etching at pH ∼3 yielded Au
25
, that at pH 7–8 yielded Au
8
. This is the first report of the synthesis of two quantum clusters starting from a single precursor. This simple method makes it possible to synthesize well-defined clusters in gram quantities. Since these clusters are highly fluorescent and are highly biocompatible due to their low metallic content, they can be used for diagnostic applications.</description><subject>Atomic/Molecular Structure and Spectra</subject><subject>Biomedicine</subject><subject>Biotechnology</subject><subject>Chemistry and Materials Science</subject><subject>Clusters</subject><subject>Condensed Matter Physics</subject><subject>Etching</subject><subject>Gold</subject><subject>Materials Science</subject><subject>Nanocomposites</subject><subject>Nanomaterials</subject><subject>Nanoparticles</subject><subject>Nanostructure</subject><subject>Nanotechnology</subject><subject>Research Article</subject><issn>1998-0124</issn><issn>1998-0000</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>BENPR</sourceid><recordid>eNp9kU1rFjEUhQexYG37A7oLbnQzNbmZjztLKdYWCm7qOqTJzeuUTDJNMkj_vRleRRB0lZD7nHM5OU1zKfiV4Hz8mAXA2LWcY4tc9i28ak7FNGF94fz177uA7k3zNucnzgcQHZ4228OPyOycyxxMYc5vMVE2FAp73nQo28KM33KhlFl07BC9ZbnoVPEDcykubKGivZ8NCzrEdZ8YT5k9vrD1trW0UrC7m58POlhGxXyv0vPmxGmf6eLXedZ8u_n8cH3b3n_9cnf96b41nZhKS5b3DjRQRwgwjBMOkkA469DhKK3lEjWgNL145CBIaCSgAcFOBOOI8qx5f_RdU3zeKBe1zDWd9zpQ3LKa6rdA3w19JT_8lxQjDgIFSlnRd3-hT3FLoeaofrJDHGDfLI6QSTHnRE6taV50elGCq70xdWxM1cbU3piCqoGjJlc2HCj9Mf636Ce8u5n6</recordid><startdate>20081001</startdate><enddate>20081001</enddate><creator>Habeeb Muhammed, Madathumpady Abubaker</creator><creator>Ramesh, Subramani</creator><creator>Sinha, Sudarson Sekhar</creator><creator>Pal, Samir Kumar</creator><creator>Pradeep, Thalappil</creator><general>Tsinghua Press</general><general>Springer Nature B.V</general><scope>C6C</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SE</scope><scope>7SR</scope><scope>7U5</scope><scope>7X7</scope><scope>7XB</scope><scope>8AO</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H8G</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>K9.</scope><scope>KB.</scope><scope>L7M</scope><scope>LK8</scope><scope>M0S</scope><scope>M7P</scope><scope>P64</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope></search><sort><creationdate>20081001</creationdate><title>Two distinct fluorescent quantum clusters of gold starting from metallic nanoparticles by pH-dependent ligand etching</title><author>Habeeb Muhammed, Madathumpady Abubaker ; 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25
and Au
8
, have been synthesized from mercaptosuccinic acid-protected gold nanoparticles of 4–5 nm core diameter by etching with excess glutathione. While etching at pH ∼3 yielded Au
25
, that at pH 7–8 yielded Au
8
. This is the first report of the synthesis of two quantum clusters starting from a single precursor. This simple method makes it possible to synthesize well-defined clusters in gram quantities. Since these clusters are highly fluorescent and are highly biocompatible due to their low metallic content, they can be used for diagnostic applications.</abstract><cop>Heidelberg</cop><pub>Tsinghua Press</pub><doi>10.1007/s12274-008-8035-2</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 1998-0124 |
| ispartof | Nano research, 2008-10, Vol.1 (4), p.333-340 |
| issn | 1998-0124 1998-0000 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_919925465 |
| source | SpringerLink Journals; EZB-FREE-00999 freely available EZB journals; Free Full-Text Journals in Chemistry |
| subjects | Atomic/Molecular Structure and Spectra Biomedicine Biotechnology Chemistry and Materials Science Clusters Condensed Matter Physics Etching Gold Materials Science Nanocomposites Nanomaterials Nanoparticles Nanostructure Nanotechnology Research Article |
| title | Two distinct fluorescent quantum clusters of gold starting from metallic nanoparticles by pH-dependent ligand etching |
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