Microbial Synthesis of Multishaped Gold Nanostructures
The development of methodologies for the synthesis of nanoparticles of well‐defined size and shape is a challenging one and constitutes an important area of research in nanotechnology. This Full Paper describes the controlled synthesis of multishaped gold nanoparticles at room temperature utilizing...
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| Veröffentlicht in: | Small (Weinheim an der Bergstrasse, Germany) Germany), 2010-05, Vol.6 (9), p.1012-1021 |
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| creator | Das, Sujoy K. Das, Akhil R. Guha, Arun K. |
| description | The development of methodologies for the synthesis of nanoparticles of well‐defined size and shape is a challenging one and constitutes an important area of research in nanotechnology. This Full Paper describes the controlled synthesis of multishaped gold nanoparticles at room temperature utilizing a simple, green chemical method by the interaction of chloroauric acid (HAuCl4 · 3H20) and cell‐free extract of the fungal strain Rhizopus oryzae. The cell‐free extract functions as a reducing, shape‐directing, as well as stabilizing, agent. Different shapes of gold nanocrystals, for example, triangular, hexagonal, pentagonal, spherical, spheroidal, urchinlike, two‐dimensional nanowires, and nanorods, are generated by manipulating key growth parameters, such as gold ion concentration, solution pH, and reaction time. The synthesized nanostructures are characterized by UV/Vis and Fourier‐transform infrared spectroscopy, transmission electron microscopy, and energy dispersive X‐ray analysis studies. Electron diffraction patterns reveal the crystalline nature of the nanoparticles and a probable mechanism is proposed for the formation of the different structural entities.
A simple, protein‐mediated, green chemical methodology is proposed for the synthesis of multishaped (triangular, hexagonal, pentagonal, spherical, spheroidal, urchinlike, two‐dimensional nanowires, and nanorods) gold nanostructures. The proteins function as a reducing, shape directing, and stabilizing agent. |
| doi_str_mv | 10.1002/smll.200902011 |
| format | Article |
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A simple, protein‐mediated, green chemical methodology is proposed for the synthesis of multishaped (triangular, hexagonal, pentagonal, spherical, spheroidal, urchinlike, two‐dimensional nanowires, and nanorods) gold nanostructures. The proteins function as a reducing, shape directing, and stabilizing agent.</description><identifier>ISSN: 1613-6810</identifier><identifier>ISSN: 1613-6829</identifier><identifier>EISSN: 1613-6829</identifier><identifier>DOI: 10.1002/smll.200902011</identifier><identifier>PMID: 20376859</identifier><language>eng</language><publisher>Weinheim: WILEY-VCH Verlag</publisher><subject>Cell-Free System - chemistry ; cell-free systems ; Chlorides - chemistry ; Crystallization - methods ; Gold - chemistry ; Gold Compounds - chemistry ; gold nanoparticles ; Macromolecular Substances - chemistry ; Materials Testing ; microbial synthesis ; Molecular Conformation ; Nanostructures - chemistry ; Nanostructures - ultrastructure ; Nanotechnology - methods ; Particle Size ; Rhizopus - chemistry ; Rhizopus oryzae ; shape-controlled nanoparticles ; Surface Properties</subject><ispartof>Small (Weinheim an der Bergstrasse, Germany), 2010-05, Vol.6 (9), p.1012-1021</ispartof><rights>Copyright © 2010 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5211-3b4d3eab5ce58eaa9caefe9dd65d95c1ec553d216d633ba9e99af097713207e83</citedby><cites>FETCH-LOGICAL-c5211-3b4d3eab5ce58eaa9caefe9dd65d95c1ec553d216d633ba9e99af097713207e83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fsmll.200902011$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fsmll.200902011$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20376859$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Das, Sujoy K.</creatorcontrib><creatorcontrib>Das, Akhil R.</creatorcontrib><creatorcontrib>Guha, Arun K.</creatorcontrib><title>Microbial Synthesis of Multishaped Gold Nanostructures</title><title>Small (Weinheim an der Bergstrasse, Germany)</title><addtitle>Small</addtitle><description>The development of methodologies for the synthesis of nanoparticles of well‐defined size and shape is a challenging one and constitutes an important area of research in nanotechnology. This Full Paper describes the controlled synthesis of multishaped gold nanoparticles at room temperature utilizing a simple, green chemical method by the interaction of chloroauric acid (HAuCl4 · 3H20) and cell‐free extract of the fungal strain Rhizopus oryzae. The cell‐free extract functions as a reducing, shape‐directing, as well as stabilizing, agent. Different shapes of gold nanocrystals, for example, triangular, hexagonal, pentagonal, spherical, spheroidal, urchinlike, two‐dimensional nanowires, and nanorods, are generated by manipulating key growth parameters, such as gold ion concentration, solution pH, and reaction time. The synthesized nanostructures are characterized by UV/Vis and Fourier‐transform infrared spectroscopy, transmission electron microscopy, and energy dispersive X‐ray analysis studies. Electron diffraction patterns reveal the crystalline nature of the nanoparticles and a probable mechanism is proposed for the formation of the different structural entities.
A simple, protein‐mediated, green chemical methodology is proposed for the synthesis of multishaped (triangular, hexagonal, pentagonal, spherical, spheroidal, urchinlike, two‐dimensional nanowires, and nanorods) gold nanostructures. The proteins function as a reducing, shape directing, and stabilizing agent.</description><subject>Cell-Free System - chemistry</subject><subject>cell-free systems</subject><subject>Chlorides - chemistry</subject><subject>Crystallization - methods</subject><subject>Gold - chemistry</subject><subject>Gold Compounds - chemistry</subject><subject>gold nanoparticles</subject><subject>Macromolecular Substances - chemistry</subject><subject>Materials Testing</subject><subject>microbial synthesis</subject><subject>Molecular Conformation</subject><subject>Nanostructures - chemistry</subject><subject>Nanostructures - ultrastructure</subject><subject>Nanotechnology - methods</subject><subject>Particle Size</subject><subject>Rhizopus - chemistry</subject><subject>Rhizopus oryzae</subject><subject>shape-controlled nanoparticles</subject><subject>Surface Properties</subject><issn>1613-6810</issn><issn>1613-6829</issn><issn>1613-6829</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkMFPwjAUhxujEUSvHs1unoZ9LW3XoyEKRsAQMB6bbn0L08Jw3aL890JA4s1T3-H7fUk_Qq6BdoFSdheW3ncZpZoyCnBC2iCBxzJh-vR4A22RixDeKeXAeuqctBjlSiZCt4kcF1lVpoX10WyzqhcYihCVeTRufF2EhV2jiwald9HErspQV01WNxWGS3KWWx_w6vB2yOvjw7w_jEcvg6f-_SjOBAOIedpzHG0qMhQJWqszizlq56RwWmSAmRDcMZBOcp5ajVrbnGqlgDOqMOEdcrv3rqvys8FQm2URMvTerrBsgtEUpEgS4P-SinPBFBV6S3b35PbjIVSYm3VVLG21MUDNLqrZRTXHqNvBzUHdpEt0R_y34hbQe-Cr8Lj5R2dm49Horzzeb4tQ4_dxa6sPIxVXwrxNBuZ5Oh-CGM_NlP8AHqKS4w</recordid><startdate>20100507</startdate><enddate>20100507</enddate><creator>Das, Sujoy K.</creator><creator>Das, Akhil R.</creator><creator>Guha, Arun K.</creator><general>WILEY-VCH Verlag</general><general>WILEY‐VCH Verlag</general><scope>BSCLL</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><scope>7T7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope></search><sort><creationdate>20100507</creationdate><title>Microbial Synthesis of Multishaped Gold Nanostructures</title><author>Das, Sujoy K. ; Das, Akhil R. ; Guha, Arun K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5211-3b4d3eab5ce58eaa9caefe9dd65d95c1ec553d216d633ba9e99af097713207e83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Cell-Free System - chemistry</topic><topic>cell-free systems</topic><topic>Chlorides - chemistry</topic><topic>Crystallization - methods</topic><topic>Gold - chemistry</topic><topic>Gold Compounds - chemistry</topic><topic>gold nanoparticles</topic><topic>Macromolecular Substances - chemistry</topic><topic>Materials Testing</topic><topic>microbial synthesis</topic><topic>Molecular Conformation</topic><topic>Nanostructures - chemistry</topic><topic>Nanostructures - ultrastructure</topic><topic>Nanotechnology - methods</topic><topic>Particle Size</topic><topic>Rhizopus - chemistry</topic><topic>Rhizopus oryzae</topic><topic>shape-controlled nanoparticles</topic><topic>Surface Properties</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Das, Sujoy K.</creatorcontrib><creatorcontrib>Das, Akhil R.</creatorcontrib><creatorcontrib>Guha, Arun K.</creatorcontrib><collection>Istex</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><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Small (Weinheim an der Bergstrasse, Germany)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Das, Sujoy K.</au><au>Das, Akhil R.</au><au>Guha, Arun K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Microbial Synthesis of Multishaped Gold Nanostructures</atitle><jtitle>Small (Weinheim an der Bergstrasse, Germany)</jtitle><addtitle>Small</addtitle><date>2010-05-07</date><risdate>2010</risdate><volume>6</volume><issue>9</issue><spage>1012</spage><epage>1021</epage><pages>1012-1021</pages><issn>1613-6810</issn><issn>1613-6829</issn><eissn>1613-6829</eissn><abstract>The development of methodologies for the synthesis of nanoparticles of well‐defined size and shape is a challenging one and constitutes an important area of research in nanotechnology. This Full Paper describes the controlled synthesis of multishaped gold nanoparticles at room temperature utilizing a simple, green chemical method by the interaction of chloroauric acid (HAuCl4 · 3H20) and cell‐free extract of the fungal strain Rhizopus oryzae. The cell‐free extract functions as a reducing, shape‐directing, as well as stabilizing, agent. Different shapes of gold nanocrystals, for example, triangular, hexagonal, pentagonal, spherical, spheroidal, urchinlike, two‐dimensional nanowires, and nanorods, are generated by manipulating key growth parameters, such as gold ion concentration, solution pH, and reaction time. The synthesized nanostructures are characterized by UV/Vis and Fourier‐transform infrared spectroscopy, transmission electron microscopy, and energy dispersive X‐ray analysis studies. Electron diffraction patterns reveal the crystalline nature of the nanoparticles and a probable mechanism is proposed for the formation of the different structural entities.
A simple, protein‐mediated, green chemical methodology is proposed for the synthesis of multishaped (triangular, hexagonal, pentagonal, spherical, spheroidal, urchinlike, two‐dimensional nanowires, and nanorods) gold nanostructures. The proteins function as a reducing, shape directing, and stabilizing agent.</abstract><cop>Weinheim</cop><pub>WILEY-VCH Verlag</pub><pmid>20376859</pmid><doi>10.1002/smll.200902011</doi><tpages>10</tpages></addata></record> |
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| subjects | Cell-Free System - chemistry cell-free systems Chlorides - chemistry Crystallization - methods Gold - chemistry Gold Compounds - chemistry gold nanoparticles Macromolecular Substances - chemistry Materials Testing microbial synthesis Molecular Conformation Nanostructures - chemistry Nanostructures - ultrastructure Nanotechnology - methods Particle Size Rhizopus - chemistry Rhizopus oryzae shape-controlled nanoparticles Surface Properties |
| title | Microbial Synthesis of Multishaped Gold Nanostructures |
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