Effects of surfactant concentration on formation of high-aspect-ratio gold nanorods
[Display omitted] •Gold nanorods (aspect ratio >20) were synthesized with a modified seeding method.•Longer nanorods grow at higher surfactant concentrations.•Surfactant self-assemblies were analyzed using small-angle X-ray scattering.•Complex formation of gold ions with HTAB micelles suppresses...
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| Veröffentlicht in: | Journal of colloid and interface science 2013-10, Vol.407, p.265-272 |
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| container_title | Journal of colloid and interface science |
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| creator | Takenaka, Yoshiko Kawabata, Youhei Kitahata, Hiroyuki Yoshida, Masaru Matsuzawa, Yoko Ohzono, Takuya |
| description | [Display omitted]
•Gold nanorods (aspect ratio >20) were synthesized with a modified seeding method.•Longer nanorods grow at higher surfactant concentrations.•Surfactant self-assemblies were analyzed using small-angle X-ray scattering.•Complex formation of gold ions with HTAB micelles suppresses secondary nucleation.•Suppressing secondary nucleation is important to elongate gold nanorods.
The effects of surfactant concentration in a growth solution on the elongation of gold nanorods were examined. Gold nanorods were synthesized in solutions with different concentrations of hexadecyltrimethylammonium bromide (HTAB): 100, 200, 300, 400, 500, and 600mM. The nanorods grown in a solution with higher surfactant concentrations were longer (aspect ratio ∼30) than those grown in that with lower concentrations (aspect ratio |
| doi_str_mv | 10.1016/j.jcis.2013.06.008 |
| format | Article |
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•Gold nanorods (aspect ratio >20) were synthesized with a modified seeding method.•Longer nanorods grow at higher surfactant concentrations.•Surfactant self-assemblies were analyzed using small-angle X-ray scattering.•Complex formation of gold ions with HTAB micelles suppresses secondary nucleation.•Suppressing secondary nucleation is important to elongate gold nanorods.
The effects of surfactant concentration in a growth solution on the elongation of gold nanorods were examined. Gold nanorods were synthesized in solutions with different concentrations of hexadecyltrimethylammonium bromide (HTAB): 100, 200, 300, 400, 500, and 600mM. The nanorods grown in a solution with higher surfactant concentrations were longer (aspect ratio ∼30) than those grown in that with lower concentrations (aspect ratio <10). The self-assembled surfactant structures in the solutions were analyzed using viscosity measurement and small-angle X-ray scattering. These results showed a decrease in the inter-micellar distance with increasing surfactant concentration. Taking the chemical equilibrium for the complex formation between Au ions and HTAB micelles into account, we found that the free Au ion concentration decreases accompanied with the increase in the surfactant concentration. This decrease in the free Au ion concentration suppresses undesirable secondary nucleation of gold crystals in a growth solution, resulting in gold nanorod elongation.</description><identifier>ISSN: 0021-9797</identifier><identifier>EISSN: 1095-7103</identifier><identifier>DOI: 10.1016/j.jcis.2013.06.008</identifier><identifier>PMID: 23830281</identifier><identifier>CODEN: JCISA5</identifier><language>eng</language><publisher>Amsterdam: Elsevier Inc</publisher><subject>Aspect ratio ; cetyltrimethylammonium bromide ; chemical equilibrium ; Chemistry ; Colloidal state and disperse state ; Crystals ; Elongation ; Exact sciences and technology ; General and physical chemistry ; Gold ; Hexadecyltrimethylammonium bromide (HTAB) ; High-aspect-ratio gold nanorod ; Ion concentration ; ions ; Micellar structure ; micelles ; Micelles. Thin films ; Nanorods ; Nucleation ; Secondary nucleation ; Small-angle X-ray scattering (SAXS) ; Surfactants ; viscosity ; X-radiation</subject><ispartof>Journal of colloid and interface science, 2013-10, Vol.407, p.265-272</ispartof><rights>2013 Elsevier Inc.</rights><rights>2014 INIST-CNRS</rights><rights>Copyright © 2013 Elsevier Inc. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c509t-70298220e2da73a9ab521f29f1e40d3fe66f0b747d9c207176eaf44e5013bc793</citedby><cites>FETCH-LOGICAL-c509t-70298220e2da73a9ab521f29f1e40d3fe66f0b747d9c207176eaf44e5013bc793</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0021979713005456$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=27676856$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23830281$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Takenaka, Yoshiko</creatorcontrib><creatorcontrib>Kawabata, Youhei</creatorcontrib><creatorcontrib>Kitahata, Hiroyuki</creatorcontrib><creatorcontrib>Yoshida, Masaru</creatorcontrib><creatorcontrib>Matsuzawa, Yoko</creatorcontrib><creatorcontrib>Ohzono, Takuya</creatorcontrib><title>Effects of surfactant concentration on formation of high-aspect-ratio gold nanorods</title><title>Journal of colloid and interface science</title><addtitle>J Colloid Interface Sci</addtitle><description>[Display omitted]
•Gold nanorods (aspect ratio >20) were synthesized with a modified seeding method.•Longer nanorods grow at higher surfactant concentrations.•Surfactant self-assemblies were analyzed using small-angle X-ray scattering.•Complex formation of gold ions with HTAB micelles suppresses secondary nucleation.•Suppressing secondary nucleation is important to elongate gold nanorods.
The effects of surfactant concentration in a growth solution on the elongation of gold nanorods were examined. Gold nanorods were synthesized in solutions with different concentrations of hexadecyltrimethylammonium bromide (HTAB): 100, 200, 300, 400, 500, and 600mM. The nanorods grown in a solution with higher surfactant concentrations were longer (aspect ratio ∼30) than those grown in that with lower concentrations (aspect ratio <10). The self-assembled surfactant structures in the solutions were analyzed using viscosity measurement and small-angle X-ray scattering. These results showed a decrease in the inter-micellar distance with increasing surfactant concentration. Taking the chemical equilibrium for the complex formation between Au ions and HTAB micelles into account, we found that the free Au ion concentration decreases accompanied with the increase in the surfactant concentration. This decrease in the free Au ion concentration suppresses undesirable secondary nucleation of gold crystals in a growth solution, resulting in gold nanorod elongation.</description><subject>Aspect ratio</subject><subject>cetyltrimethylammonium bromide</subject><subject>chemical equilibrium</subject><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>Crystals</subject><subject>Elongation</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Gold</subject><subject>Hexadecyltrimethylammonium bromide (HTAB)</subject><subject>High-aspect-ratio gold nanorod</subject><subject>Ion concentration</subject><subject>ions</subject><subject>Micellar structure</subject><subject>micelles</subject><subject>Micelles. Thin films</subject><subject>Nanorods</subject><subject>Nucleation</subject><subject>Secondary nucleation</subject><subject>Small-angle X-ray scattering (SAXS)</subject><subject>Surfactants</subject><subject>viscosity</subject><subject>X-radiation</subject><issn>0021-9797</issn><issn>1095-7103</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqF0U1r3DAQBmBRUppt2j-QQ-JLoBe7M5ItWZBLCOkHBHpIcxazsrTR4rU2krfQfx9td5tjCwIheGYkvcPYOUKDgPLzulnbkBsOKBqQDUD_hi0QdFcrBHHCFgAca620OmXvc14DIHadfsdOuegF8B4X7OHOe2fnXEVf5V3yZGea5srGybppTjSHOFVl-Zg2x4OvnsLqqaa8LYX1H1Kt4jhUE00xxSF_YG89jdl9PO5n7PHL3c_bb_X9j6_fb2_ua9uBnmsFXPecg-MDKUGalh1Hz7VH18IgvJPSw1K1atCWg0IlHfm2dV3579IqLc7Yp0PfbYrPO5dnswnZunGkycVdNtihaDnq4v9LWw4StNS8UH6gNsWck_Nmm8KG0m-DYPa5m7XZ5272uRuQpuReii6O_XfLjRteS_4GXcDVEVC2NPpE077Hq1NSyb6TxV0enKdoaJWKeXwoN0kAUL0Soojrg3Al2l_BJZNtcGVcQ0hlIGaI4V8vfQHJzKlJ</recordid><startdate>20131001</startdate><enddate>20131001</enddate><creator>Takenaka, Yoshiko</creator><creator>Kawabata, Youhei</creator><creator>Kitahata, Hiroyuki</creator><creator>Yoshida, Masaru</creator><creator>Matsuzawa, Yoko</creator><creator>Ohzono, Takuya</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20131001</creationdate><title>Effects of surfactant concentration on formation of high-aspect-ratio gold nanorods</title><author>Takenaka, Yoshiko ; Kawabata, Youhei ; Kitahata, Hiroyuki ; Yoshida, Masaru ; Matsuzawa, Yoko ; Ohzono, Takuya</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c509t-70298220e2da73a9ab521f29f1e40d3fe66f0b747d9c207176eaf44e5013bc793</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Aspect ratio</topic><topic>cetyltrimethylammonium bromide</topic><topic>chemical equilibrium</topic><topic>Chemistry</topic><topic>Colloidal state and disperse state</topic><topic>Crystals</topic><topic>Elongation</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Gold</topic><topic>Hexadecyltrimethylammonium bromide (HTAB)</topic><topic>High-aspect-ratio gold nanorod</topic><topic>Ion concentration</topic><topic>ions</topic><topic>Micellar structure</topic><topic>micelles</topic><topic>Micelles. Thin films</topic><topic>Nanorods</topic><topic>Nucleation</topic><topic>Secondary nucleation</topic><topic>Small-angle X-ray scattering (SAXS)</topic><topic>Surfactants</topic><topic>viscosity</topic><topic>X-radiation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Takenaka, Yoshiko</creatorcontrib><creatorcontrib>Kawabata, Youhei</creatorcontrib><creatorcontrib>Kitahata, Hiroyuki</creatorcontrib><creatorcontrib>Yoshida, Masaru</creatorcontrib><creatorcontrib>Matsuzawa, Yoko</creatorcontrib><creatorcontrib>Ohzono, Takuya</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of colloid and interface science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Takenaka, Yoshiko</au><au>Kawabata, Youhei</au><au>Kitahata, Hiroyuki</au><au>Yoshida, Masaru</au><au>Matsuzawa, Yoko</au><au>Ohzono, Takuya</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of surfactant concentration on formation of high-aspect-ratio gold nanorods</atitle><jtitle>Journal of colloid and interface science</jtitle><addtitle>J Colloid Interface Sci</addtitle><date>2013-10-01</date><risdate>2013</risdate><volume>407</volume><spage>265</spage><epage>272</epage><pages>265-272</pages><issn>0021-9797</issn><eissn>1095-7103</eissn><coden>JCISA5</coden><abstract>[Display omitted]
•Gold nanorods (aspect ratio >20) were synthesized with a modified seeding method.•Longer nanorods grow at higher surfactant concentrations.•Surfactant self-assemblies were analyzed using small-angle X-ray scattering.•Complex formation of gold ions with HTAB micelles suppresses secondary nucleation.•Suppressing secondary nucleation is important to elongate gold nanorods.
The effects of surfactant concentration in a growth solution on the elongation of gold nanorods were examined. Gold nanorods were synthesized in solutions with different concentrations of hexadecyltrimethylammonium bromide (HTAB): 100, 200, 300, 400, 500, and 600mM. The nanorods grown in a solution with higher surfactant concentrations were longer (aspect ratio ∼30) than those grown in that with lower concentrations (aspect ratio <10). The self-assembled surfactant structures in the solutions were analyzed using viscosity measurement and small-angle X-ray scattering. These results showed a decrease in the inter-micellar distance with increasing surfactant concentration. Taking the chemical equilibrium for the complex formation between Au ions and HTAB micelles into account, we found that the free Au ion concentration decreases accompanied with the increase in the surfactant concentration. This decrease in the free Au ion concentration suppresses undesirable secondary nucleation of gold crystals in a growth solution, resulting in gold nanorod elongation.</abstract><cop>Amsterdam</cop><pub>Elsevier Inc</pub><pmid>23830281</pmid><doi>10.1016/j.jcis.2013.06.008</doi><tpages>8</tpages></addata></record> |
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| subjects | Aspect ratio cetyltrimethylammonium bromide chemical equilibrium Chemistry Colloidal state and disperse state Crystals Elongation Exact sciences and technology General and physical chemistry Gold Hexadecyltrimethylammonium bromide (HTAB) High-aspect-ratio gold nanorod Ion concentration ions Micellar structure micelles Micelles. Thin films Nanorods Nucleation Secondary nucleation Small-angle X-ray scattering (SAXS) Surfactants viscosity X-radiation |
| title | Effects of surfactant concentration on formation of high-aspect-ratio gold nanorods |
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