Gel Immobilization of Centimeter-Sized and Uniform Colloidal Crystals Formed under Temperature Gradient
We report the fabrication of large and high-quality charged colloidal crystals that are incorporated in a polymer hydrogel matrix. The colloidal crystals are prepared by the thermally induced unidirectional crystallization of colloidal silica in coexistence with pyridine, whose dissociation degree i...
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| Veröffentlicht in: | Langmuir 2009-01, Vol.25 (1), p.589-593 |
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| container_title | Langmuir |
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| creator | Toyotama, Akiko Yamanaka, Junpei Shinohara, Mariko Onda, Sachiko Sawada, Tsutomu Yonese, Masakatsu Uchida, Fumio |
| description | We report the fabrication of large and high-quality charged colloidal crystals that are incorporated in a polymer hydrogel matrix. The colloidal crystals are prepared by the thermally induced unidirectional crystallization of colloidal silica in coexistence with pyridine, whose dissociation degree increases with temperature. Their crystal structures are immobilized in the polymer hydrogel matrix by photoinduced polymerizations. The crystals are large sized (maximum dimensions: 1 × 10 × ∼30 mm), and their lattice planes are well oriented and parallel to the gel surface. Furthermore, they have excellent spatial uniformity in the Bragg wavelengths ( |
| doi_str_mv | 10.1021/la8013706 |
| format | Article |
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The colloidal crystals are prepared by the thermally induced unidirectional crystallization of colloidal silica in coexistence with pyridine, whose dissociation degree increases with temperature. Their crystal structures are immobilized in the polymer hydrogel matrix by photoinduced polymerizations. The crystals are large sized (maximum dimensions: 1 × 10 × ∼30 mm), and their lattice planes are well oriented and parallel to the gel surface. Furthermore, they have excellent spatial uniformity in the Bragg wavelengths (<0.7% in standard deviation). The present gelled colloidal crystals, which are unique in that they have large sizes as well as good optical uniformity, will be useful as photonic materials.</description><identifier>ISSN: 0743-7463</identifier><identifier>EISSN: 1520-5827</identifier><identifier>DOI: 10.1021/la8013706</identifier><identifier>PMID: 19053644</identifier><identifier>CODEN: LANGD5</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Chemistry ; Colloidal gels. 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The colloidal crystals are prepared by the thermally induced unidirectional crystallization of colloidal silica in coexistence with pyridine, whose dissociation degree increases with temperature. Their crystal structures are immobilized in the polymer hydrogel matrix by photoinduced polymerizations. The crystals are large sized (maximum dimensions: 1 × 10 × ∼30 mm), and their lattice planes are well oriented and parallel to the gel surface. Furthermore, they have excellent spatial uniformity in the Bragg wavelengths (<0.7% in standard deviation). The present gelled colloidal crystals, which are unique in that they have large sizes as well as good optical uniformity, will be useful as photonic materials.</description><subject>Chemistry</subject><subject>Colloidal gels. Colloidal sols</subject><subject>Colloidal state and disperse state</subject><subject>Colloids</subject><subject>Crystallization</subject><subject>Devices and Applications: Sensors, Fluidics, Patterning, Catalysis, Photonic Crystals</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Hydrogels</subject><subject>Surface physical chemistry</subject><subject>Temperature</subject><issn>0743-7463</issn><issn>1520-5827</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpt0UFL5TAUBeAgyvjUWcwfGLJRcFG9adO0XQ5Fnw8euFDX5Ta9kUjavEnahf56Iz504yoQPk44J4z9EXAlIBfXDmsQRQXqgK1EmUNW1nl1yFZQySKrpCqO2UmMLwDQFLL5xY5FA2WhpFyx5zU5vhlH31tn33C2fuLe8Jam2Y40U8ge7BsNHKeBP03W-DDy1jvn7YCOt-E1zugiv033SS3TQIE_0rijgPMSiK8DDjaFnbEjkyD93p-n7On25rG9y7b36037b5uhhGbOeo1DKakRWGvV12CaAYwhk4o0useqxEYLDX1NQoDK-1pjial4nysjCXRxyi4-c3fB_18ozt1ooybncCK_xE6pqpa1EAlefkIdfIyBTLcLdsTw2gnoPlbtvlZN9u8-dOlTzW-5nzGB8z3AqNGZgJO28cvlAgqV_uXboY7di1_ClLb44cF3gQeMNA</recordid><startdate>20090106</startdate><enddate>20090106</enddate><creator>Toyotama, Akiko</creator><creator>Yamanaka, Junpei</creator><creator>Shinohara, Mariko</creator><creator>Onda, Sachiko</creator><creator>Sawada, Tsutomu</creator><creator>Yonese, Masakatsu</creator><creator>Uchida, Fumio</creator><general>American Chemical Society</general><scope>IQODW</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></search><sort><creationdate>20090106</creationdate><title>Gel Immobilization of Centimeter-Sized and Uniform Colloidal Crystals Formed under Temperature Gradient</title><author>Toyotama, Akiko ; Yamanaka, Junpei ; Shinohara, Mariko ; Onda, Sachiko ; Sawada, Tsutomu ; Yonese, Masakatsu ; Uchida, Fumio</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a409t-bcad54e91a8c6b80f9d0ffef7439cba75a9c1c0b8e11062b8ca5a706b26f4e0c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Chemistry</topic><topic>Colloidal gels. Colloidal sols</topic><topic>Colloidal state and disperse state</topic><topic>Colloids</topic><topic>Crystallization</topic><topic>Devices and Applications: Sensors, Fluidics, Patterning, Catalysis, Photonic Crystals</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Hydrogels</topic><topic>Surface physical chemistry</topic><topic>Temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Toyotama, Akiko</creatorcontrib><creatorcontrib>Yamanaka, Junpei</creatorcontrib><creatorcontrib>Shinohara, Mariko</creatorcontrib><creatorcontrib>Onda, Sachiko</creatorcontrib><creatorcontrib>Sawada, Tsutomu</creatorcontrib><creatorcontrib>Yonese, Masakatsu</creatorcontrib><creatorcontrib>Uchida, Fumio</creatorcontrib><collection>Pascal-Francis</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><jtitle>Langmuir</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Toyotama, Akiko</au><au>Yamanaka, Junpei</au><au>Shinohara, Mariko</au><au>Onda, Sachiko</au><au>Sawada, Tsutomu</au><au>Yonese, Masakatsu</au><au>Uchida, Fumio</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Gel Immobilization of Centimeter-Sized and Uniform Colloidal Crystals Formed under Temperature Gradient</atitle><jtitle>Langmuir</jtitle><addtitle>Langmuir</addtitle><date>2009-01-06</date><risdate>2009</risdate><volume>25</volume><issue>1</issue><spage>589</spage><epage>593</epage><pages>589-593</pages><issn>0743-7463</issn><eissn>1520-5827</eissn><coden>LANGD5</coden><abstract>We report the fabrication of large and high-quality charged colloidal crystals that are incorporated in a polymer hydrogel matrix. The colloidal crystals are prepared by the thermally induced unidirectional crystallization of colloidal silica in coexistence with pyridine, whose dissociation degree increases with temperature. Their crystal structures are immobilized in the polymer hydrogel matrix by photoinduced polymerizations. The crystals are large sized (maximum dimensions: 1 × 10 × ∼30 mm), and their lattice planes are well oriented and parallel to the gel surface. Furthermore, they have excellent spatial uniformity in the Bragg wavelengths (<0.7% in standard deviation). The present gelled colloidal crystals, which are unique in that they have large sizes as well as good optical uniformity, will be useful as photonic materials.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>19053644</pmid><doi>10.1021/la8013706</doi><tpages>5</tpages></addata></record> |
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| subjects | Chemistry Colloidal gels. Colloidal sols Colloidal state and disperse state Colloids Crystallization Devices and Applications: Sensors, Fluidics, Patterning, Catalysis, Photonic Crystals Exact sciences and technology General and physical chemistry Hydrogels Surface physical chemistry Temperature |
| title | Gel Immobilization of Centimeter-Sized and Uniform Colloidal Crystals Formed under Temperature Gradient |
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