Remarkable surface-enhanced Raman scattering on self-assembled {201} anatase
Semiconductors exhibit great potential as a surface-enhanced Raman scattering (SERS) substrate due to their low cost, stability, and biocompatibility. However, their application has been essentially restricted by their intrinsically low SERS sensitivity (10-10 2 ). Herein, sea urchin-like TiO 2 was...
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| Veröffentlicht in: | Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2019, Vol.7 (45), p.14239-14244 |
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| container_title | Journal of materials chemistry. C, Materials for optical and electronic devices |
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| creator | Yu, Yaqin Du, Jingjing Jing, Chuanyong |
| description | Semiconductors exhibit great potential as a surface-enhanced Raman scattering (SERS) substrate due to their low cost, stability, and biocompatibility. However, their application has been essentially restricted by their intrinsically low SERS sensitivity (10-10
2
). Herein, sea urchin-like TiO
2
was obtained by a self-assembled growth of crystals enclosed with the {201} facet. The high-symmetric spiny spheres exhibited appreciable Raman enhancement factors (EFs) of 1.6 × 10
6
, three orders of magnitude higher than those asymmetric TiO
2
with exposed {101}, {001}, and {100} facets. The greatest charge transfer upon dopamine adsorption occurred on {201} TiO
2
due to its high density of unoccupied t
2g
orbitals, partly contributing to the excellent SERS performance. More importantly, the sea urchin-like spheres created high-density hotspots evenly distributed in the vicinity of sharp tips and at narrow gaps between the spines, enabling a strong electromagnetic field enhancement (1.4 × 10
4
). Benefiting from the specific electronic and morphologic properties, the self-assembled {201} TiO
2
exhibited superior SERS performance in terms of both intensity and reproducibility. The insights gained from this study open a new avenue to improve the SERS performance of semiconductors for applications in biomedical analysis, food detection, and toxicity tests.
The self-assembled sea urchin-like {201} TiO
2
exhibits Raman enhancement factors at 1.6 × 10
6
, ascribed to shape-dependent electromagnetic enhancement with high-density hotspots in the vicinity of sharp tips and at narrow gaps between spines. |
| doi_str_mv | 10.1039/c9tc05062k |
| format | Article |
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2
). Herein, sea urchin-like TiO
2
was obtained by a self-assembled growth of crystals enclosed with the {201} facet. The high-symmetric spiny spheres exhibited appreciable Raman enhancement factors (EFs) of 1.6 × 10
6
, three orders of magnitude higher than those asymmetric TiO
2
with exposed {101}, {001}, and {100} facets. The greatest charge transfer upon dopamine adsorption occurred on {201} TiO
2
due to its high density of unoccupied t
2g
orbitals, partly contributing to the excellent SERS performance. More importantly, the sea urchin-like spheres created high-density hotspots evenly distributed in the vicinity of sharp tips and at narrow gaps between the spines, enabling a strong electromagnetic field enhancement (1.4 × 10
4
). Benefiting from the specific electronic and morphologic properties, the self-assembled {201} TiO
2
exhibited superior SERS performance in terms of both intensity and reproducibility. The insights gained from this study open a new avenue to improve the SERS performance of semiconductors for applications in biomedical analysis, food detection, and toxicity tests.
The self-assembled sea urchin-like {201} TiO
2
exhibits Raman enhancement factors at 1.6 × 10
6
, ascribed to shape-dependent electromagnetic enhancement with high-density hotspots in the vicinity of sharp tips and at narrow gaps between spines.</description><identifier>ISSN: 2050-7526</identifier><identifier>EISSN: 2050-7534</identifier><identifier>DOI: 10.1039/c9tc05062k</identifier><language>eng</language><publisher>Cambridge: Royal Society of Chemistry</publisher><subject>Anatase ; Biocompatibility ; Charge transfer ; Crystal growth ; Density ; Dopamine ; Electromagnetic fields ; Raman spectra ; Self-assembly ; Semiconductors ; Substrates ; Titanium dioxide ; Toxicity testing</subject><ispartof>Journal of materials chemistry. C, Materials for optical and electronic devices, 2019, Vol.7 (45), p.14239-14244</ispartof><rights>Copyright Royal Society of Chemistry 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c344t-61d19960287db989f63168b16b31e143024d9d54ca68b917d8c2a46664eb7acf3</citedby><cites>FETCH-LOGICAL-c344t-61d19960287db989f63168b16b31e143024d9d54ca68b917d8c2a46664eb7acf3</cites><orcidid>0000-0002-4475-7027</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,4024,27923,27924,27925</link.rule.ids></links><search><creatorcontrib>Yu, Yaqin</creatorcontrib><creatorcontrib>Du, Jingjing</creatorcontrib><creatorcontrib>Jing, Chuanyong</creatorcontrib><title>Remarkable surface-enhanced Raman scattering on self-assembled {201} anatase</title><title>Journal of materials chemistry. C, Materials for optical and electronic devices</title><description>Semiconductors exhibit great potential as a surface-enhanced Raman scattering (SERS) substrate due to their low cost, stability, and biocompatibility. However, their application has been essentially restricted by their intrinsically low SERS sensitivity (10-10
2
). Herein, sea urchin-like TiO
2
was obtained by a self-assembled growth of crystals enclosed with the {201} facet. The high-symmetric spiny spheres exhibited appreciable Raman enhancement factors (EFs) of 1.6 × 10
6
, three orders of magnitude higher than those asymmetric TiO
2
with exposed {101}, {001}, and {100} facets. The greatest charge transfer upon dopamine adsorption occurred on {201} TiO
2
due to its high density of unoccupied t
2g
orbitals, partly contributing to the excellent SERS performance. More importantly, the sea urchin-like spheres created high-density hotspots evenly distributed in the vicinity of sharp tips and at narrow gaps between the spines, enabling a strong electromagnetic field enhancement (1.4 × 10
4
). Benefiting from the specific electronic and morphologic properties, the self-assembled {201} TiO
2
exhibited superior SERS performance in terms of both intensity and reproducibility. The insights gained from this study open a new avenue to improve the SERS performance of semiconductors for applications in biomedical analysis, food detection, and toxicity tests.
The self-assembled sea urchin-like {201} TiO
2
exhibits Raman enhancement factors at 1.6 × 10
6
, ascribed to shape-dependent electromagnetic enhancement with high-density hotspots in the vicinity of sharp tips and at narrow gaps between spines.</description><subject>Anatase</subject><subject>Biocompatibility</subject><subject>Charge transfer</subject><subject>Crystal growth</subject><subject>Density</subject><subject>Dopamine</subject><subject>Electromagnetic fields</subject><subject>Raman spectra</subject><subject>Self-assembly</subject><subject>Semiconductors</subject><subject>Substrates</subject><subject>Titanium dioxide</subject><subject>Toxicity testing</subject><issn>2050-7526</issn><issn>2050-7534</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp9kElLAzEUx4MoWGov3oURb8JotslMjjK4YUEo9RzeJG-07Sw1mR5E_O6mVurNd3kLv7f9CTll9IpRoa-tHizNqOKrAzLiMUrzTMjDfczVMZmEsKTRCqYKpUdkOsMW_AqqBpOw8TVYTLF7g86iS2bQQpcEC8OAftG9Jn3MsKlTCAHb2OKST07ZVwIdDBDwhBzV0ASc_Poxebm7nZcP6fT5_rG8maZWSDmkijmmtaK8yF2lC10rEa-pmKoEQyYF5dJpl0kLsapZ7grLQSqlJFY52FqMycVu7tr37xsMg1n2G9_FlYbHUZILVeSRutxR1vcheKzN2i_isx-GUbMVzJR6Xv4I9hTh8x3sg91zf4KatduuPfuPEd8a43Fe</recordid><startdate>2019</startdate><enddate>2019</enddate><creator>Yu, Yaqin</creator><creator>Du, Jingjing</creator><creator>Jing, Chuanyong</creator><general>Royal Society of Chemistry</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-4475-7027</orcidid></search><sort><creationdate>2019</creationdate><title>Remarkable surface-enhanced Raman scattering on self-assembled {201} anatase</title><author>Yu, Yaqin ; Du, Jingjing ; Jing, Chuanyong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c344t-61d19960287db989f63168b16b31e143024d9d54ca68b917d8c2a46664eb7acf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Anatase</topic><topic>Biocompatibility</topic><topic>Charge transfer</topic><topic>Crystal growth</topic><topic>Density</topic><topic>Dopamine</topic><topic>Electromagnetic fields</topic><topic>Raman spectra</topic><topic>Self-assembly</topic><topic>Semiconductors</topic><topic>Substrates</topic><topic>Titanium dioxide</topic><topic>Toxicity testing</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yu, Yaqin</creatorcontrib><creatorcontrib>Du, Jingjing</creatorcontrib><creatorcontrib>Jing, Chuanyong</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of materials chemistry. C, Materials for optical and electronic devices</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yu, Yaqin</au><au>Du, Jingjing</au><au>Jing, Chuanyong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Remarkable surface-enhanced Raman scattering on self-assembled {201} anatase</atitle><jtitle>Journal of materials chemistry. C, Materials for optical and electronic devices</jtitle><date>2019</date><risdate>2019</risdate><volume>7</volume><issue>45</issue><spage>14239</spage><epage>14244</epage><pages>14239-14244</pages><issn>2050-7526</issn><eissn>2050-7534</eissn><abstract>Semiconductors exhibit great potential as a surface-enhanced Raman scattering (SERS) substrate due to their low cost, stability, and biocompatibility. However, their application has been essentially restricted by their intrinsically low SERS sensitivity (10-10
2
). Herein, sea urchin-like TiO
2
was obtained by a self-assembled growth of crystals enclosed with the {201} facet. The high-symmetric spiny spheres exhibited appreciable Raman enhancement factors (EFs) of 1.6 × 10
6
, three orders of magnitude higher than those asymmetric TiO
2
with exposed {101}, {001}, and {100} facets. The greatest charge transfer upon dopamine adsorption occurred on {201} TiO
2
due to its high density of unoccupied t
2g
orbitals, partly contributing to the excellent SERS performance. More importantly, the sea urchin-like spheres created high-density hotspots evenly distributed in the vicinity of sharp tips and at narrow gaps between the spines, enabling a strong electromagnetic field enhancement (1.4 × 10
4
). Benefiting from the specific electronic and morphologic properties, the self-assembled {201} TiO
2
exhibited superior SERS performance in terms of both intensity and reproducibility. The insights gained from this study open a new avenue to improve the SERS performance of semiconductors for applications in biomedical analysis, food detection, and toxicity tests.
The self-assembled sea urchin-like {201} TiO
2
exhibits Raman enhancement factors at 1.6 × 10
6
, ascribed to shape-dependent electromagnetic enhancement with high-density hotspots in the vicinity of sharp tips and at narrow gaps between spines.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><doi>10.1039/c9tc05062k</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0002-4475-7027</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 2050-7526 |
| ispartof | Journal of materials chemistry. C, Materials for optical and electronic devices, 2019, Vol.7 (45), p.14239-14244 |
| issn | 2050-7526 2050-7534 |
| language | eng |
| recordid | cdi_rsc_primary_c9tc05062k |
| source | Royal Society Of Chemistry Journals |
| subjects | Anatase Biocompatibility Charge transfer Crystal growth Density Dopamine Electromagnetic fields Raman spectra Self-assembly Semiconductors Substrates Titanium dioxide Toxicity testing |
| title | Remarkable surface-enhanced Raman scattering on self-assembled {201} anatase |
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