Unusual Circularly Polarized Photocatalytic Activity in Nanogapped Gold-Silver Chiroplasmonic Nanostructures
Gold‐gap‐silver nanostructures (GGS NSs) with interior nanobridged gaps are enantioselectively fabricated. Guided by l/d‐cysteine, the GGS‐L/D (L/D represents l/d‐cysteine) NSs show reversed plasmon‐induced circular dichroism (CD) signals in the visible region. It is found that the nanogap plays a k...
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| Veröffentlicht in: | Advanced functional materials 2015-09, Vol.25 (36), p.5816-5822 |
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| creator | Hao, Changlong Xu, Liguang Ma, Wei Wu, Xiaoling Wang, Libing Kuang, Hua Xu, Chuanlai |
| description | Gold‐gap‐silver nanostructures (GGS NSs) with interior nanobridged gaps are enantioselectively fabricated. Guided by l/d‐cysteine, the GGS‐L/D (L/D represents l/d‐cysteine) NSs show reversed plasmon‐induced circular dichroism (CD) signals in the visible region. It is found that the nanogap plays a key role in the plasmonic CD of GGS NSs and the chiroptical response can be tailored by adjusting the amount of cysteine. The anisotropy factor of GGS‐L/D NSs with a 0.5 nm interior gap at 430 nm is as high as ≈0.01. The circularly polarized photocatalytic activity of GGS NSs is examined. It is shown that upon irradiation with left‐circularly polarized light, the catalytic efficiency of GGS‐L NSs is 73‐fold and 17‐fold higher than that of Au nanoparticles (NPs) and Au@Ag core–shell NPs, respectively. Upon irradiation with right‐circularly polarized light, the catalytic activity of GGS‐D NSs is about 71 times and 17 times higher than that of Au NPs and Au@Ag core–shell NPs, respectively. These unique chiral NSs with high plasmonic response can be applied to enantioselective catalysis.
Guided by l/d‐cysteine, gold‐gap‐silver nanostructures (GGS NSs) with interior nanogaps, which display exceptionally strong chiroptical activity in the visible light region, are prepared. Based on the fabricated GGS NSs, unexpected circularly polarized photocatalytic activity is discovered under the irradiation with circularly polarized light. |
| doi_str_mv | 10.1002/adfm.201502429 |
| format | Article |
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Guided by l/d‐cysteine, gold‐gap‐silver nanostructures (GGS NSs) with interior nanogaps, which display exceptionally strong chiroptical activity in the visible light region, are prepared. Based on the fabricated GGS NSs, unexpected circularly polarized photocatalytic activity is discovered under the irradiation with circularly polarized light.</description><identifier>ISSN: 1616-301X</identifier><identifier>EISSN: 1616-3028</identifier><identifier>DOI: 10.1002/adfm.201502429</identifier><language>eng</language><publisher>Blackwell Publishing Ltd</publisher><subject>Catalysis ; chiroptical properties ; Circularity ; circularly polarized photocatalysis ; Dichroism ; interior nanogaps ; Irradiation ; Nanoparticles ; Nanostructure ; Photocatalysis ; Plasmonics ; Polarized light</subject><ispartof>Advanced functional materials, 2015-09, Vol.25 (36), p.5816-5822</ispartof><rights>2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4969-faa78770a7549321de133288044bc3ca90b7d3a2021563566e50caf42decdf8c3</citedby><cites>FETCH-LOGICAL-c4969-faa78770a7549321de133288044bc3ca90b7d3a2021563566e50caf42decdf8c3</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%2Fadfm.201502429$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fadfm.201502429$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>315,782,786,1419,27931,27932,45581,45582</link.rule.ids></links><search><creatorcontrib>Hao, Changlong</creatorcontrib><creatorcontrib>Xu, Liguang</creatorcontrib><creatorcontrib>Ma, Wei</creatorcontrib><creatorcontrib>Wu, Xiaoling</creatorcontrib><creatorcontrib>Wang, Libing</creatorcontrib><creatorcontrib>Kuang, Hua</creatorcontrib><creatorcontrib>Xu, Chuanlai</creatorcontrib><title>Unusual Circularly Polarized Photocatalytic Activity in Nanogapped Gold-Silver Chiroplasmonic Nanostructures</title><title>Advanced functional materials</title><addtitle>Adv. Funct. Mater</addtitle><description>Gold‐gap‐silver nanostructures (GGS NSs) with interior nanobridged gaps are enantioselectively fabricated. Guided by l/d‐cysteine, the GGS‐L/D (L/D represents l/d‐cysteine) NSs show reversed plasmon‐induced circular dichroism (CD) signals in the visible region. It is found that the nanogap plays a key role in the plasmonic CD of GGS NSs and the chiroptical response can be tailored by adjusting the amount of cysteine. The anisotropy factor of GGS‐L/D NSs with a 0.5 nm interior gap at 430 nm is as high as ≈0.01. The circularly polarized photocatalytic activity of GGS NSs is examined. It is shown that upon irradiation with left‐circularly polarized light, the catalytic efficiency of GGS‐L NSs is 73‐fold and 17‐fold higher than that of Au nanoparticles (NPs) and Au@Ag core–shell NPs, respectively. Upon irradiation with right‐circularly polarized light, the catalytic activity of GGS‐D NSs is about 71 times and 17 times higher than that of Au NPs and Au@Ag core–shell NPs, respectively. These unique chiral NSs with high plasmonic response can be applied to enantioselective catalysis.
Guided by l/d‐cysteine, gold‐gap‐silver nanostructures (GGS NSs) with interior nanogaps, which display exceptionally strong chiroptical activity in the visible light region, are prepared. Based on the fabricated GGS NSs, unexpected circularly polarized photocatalytic activity is discovered under the irradiation with circularly polarized light.</description><subject>Catalysis</subject><subject>chiroptical properties</subject><subject>Circularity</subject><subject>circularly polarized photocatalysis</subject><subject>Dichroism</subject><subject>interior nanogaps</subject><subject>Irradiation</subject><subject>Nanoparticles</subject><subject>Nanostructure</subject><subject>Photocatalysis</subject><subject>Plasmonics</subject><subject>Polarized light</subject><issn>1616-301X</issn><issn>1616-3028</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqFkDtPwzAURiMEEuWxMmdkSfEjjpOxKlAe5SFBgc26dRwwuHGwHSD8elIVVWxM3x3OucOJogOMhhghcgRltRgShBkiKSk2ogHOcJZQRPLN9Y2ftqMd718RwpzTdBCZWd36Fkw81k62Bpzp4lvbr_5WZXz7YoOVEMB0Qct4JIP-0KGLdR1fQ22foWl6amJNmdxp86FcPH7RzjYG_MLWvbGkfHCtDK1Tfi_aqsB4tf-7u9Hs9OR-fJZMbybn49E0kWmRFUkFwHPOEXCWFpTgUmFKSZ6jNJ1LKqFAc15SIIhgllGWZYohCVVKSiXLKpd0Nzpc_W2cfW-VD2KhvVTGQK1s6wXmjDLKiwz16HCFSme9d6oSjdMLcJ3ASCyzimVWsc7aC8VK-NRGdf_QYnR8evXXTVau9kF9rV1wbyLjlDPxeD0RF-ju4ZKRY3FFfwASGo1m</recordid><startdate>20150901</startdate><enddate>20150901</enddate><creator>Hao, Changlong</creator><creator>Xu, Liguang</creator><creator>Ma, Wei</creator><creator>Wu, Xiaoling</creator><creator>Wang, Libing</creator><creator>Kuang, Hua</creator><creator>Xu, Chuanlai</creator><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20150901</creationdate><title>Unusual Circularly Polarized Photocatalytic Activity in Nanogapped Gold-Silver Chiroplasmonic Nanostructures</title><author>Hao, Changlong ; Xu, Liguang ; Ma, Wei ; Wu, Xiaoling ; Wang, Libing ; Kuang, Hua ; Xu, Chuanlai</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4969-faa78770a7549321de133288044bc3ca90b7d3a2021563566e50caf42decdf8c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Catalysis</topic><topic>chiroptical properties</topic><topic>Circularity</topic><topic>circularly polarized photocatalysis</topic><topic>Dichroism</topic><topic>interior nanogaps</topic><topic>Irradiation</topic><topic>Nanoparticles</topic><topic>Nanostructure</topic><topic>Photocatalysis</topic><topic>Plasmonics</topic><topic>Polarized light</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hao, Changlong</creatorcontrib><creatorcontrib>Xu, Liguang</creatorcontrib><creatorcontrib>Ma, Wei</creatorcontrib><creatorcontrib>Wu, Xiaoling</creatorcontrib><creatorcontrib>Wang, Libing</creatorcontrib><creatorcontrib>Kuang, Hua</creatorcontrib><creatorcontrib>Xu, Chuanlai</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Advanced functional materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hao, Changlong</au><au>Xu, Liguang</au><au>Ma, Wei</au><au>Wu, Xiaoling</au><au>Wang, Libing</au><au>Kuang, Hua</au><au>Xu, Chuanlai</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Unusual Circularly Polarized Photocatalytic Activity in Nanogapped Gold-Silver Chiroplasmonic Nanostructures</atitle><jtitle>Advanced functional materials</jtitle><addtitle>Adv. Funct. Mater</addtitle><date>2015-09-01</date><risdate>2015</risdate><volume>25</volume><issue>36</issue><spage>5816</spage><epage>5822</epage><pages>5816-5822</pages><issn>1616-301X</issn><eissn>1616-3028</eissn><abstract>Gold‐gap‐silver nanostructures (GGS NSs) with interior nanobridged gaps are enantioselectively fabricated. Guided by l/d‐cysteine, the GGS‐L/D (L/D represents l/d‐cysteine) NSs show reversed plasmon‐induced circular dichroism (CD) signals in the visible region. It is found that the nanogap plays a key role in the plasmonic CD of GGS NSs and the chiroptical response can be tailored by adjusting the amount of cysteine. The anisotropy factor of GGS‐L/D NSs with a 0.5 nm interior gap at 430 nm is as high as ≈0.01. The circularly polarized photocatalytic activity of GGS NSs is examined. It is shown that upon irradiation with left‐circularly polarized light, the catalytic efficiency of GGS‐L NSs is 73‐fold and 17‐fold higher than that of Au nanoparticles (NPs) and Au@Ag core–shell NPs, respectively. Upon irradiation with right‐circularly polarized light, the catalytic activity of GGS‐D NSs is about 71 times and 17 times higher than that of Au NPs and Au@Ag core–shell NPs, respectively. These unique chiral NSs with high plasmonic response can be applied to enantioselective catalysis.
Guided by l/d‐cysteine, gold‐gap‐silver nanostructures (GGS NSs) with interior nanogaps, which display exceptionally strong chiroptical activity in the visible light region, are prepared. Based on the fabricated GGS NSs, unexpected circularly polarized photocatalytic activity is discovered under the irradiation with circularly polarized light.</abstract><pub>Blackwell Publishing Ltd</pub><doi>10.1002/adfm.201502429</doi><tpages>7</tpages></addata></record> |
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| subjects | Catalysis chiroptical properties Circularity circularly polarized photocatalysis Dichroism interior nanogaps Irradiation Nanoparticles Nanostructure Photocatalysis Plasmonics Polarized light |
| title | Unusual Circularly Polarized Photocatalytic Activity in Nanogapped Gold-Silver Chiroplasmonic Nanostructures |
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