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Tuning Quantum-Dot Organization in Liquid Crystals for Robust Photonic Applications
Mesogenic ligands have the potential to provide control over the dispersion and stabilization of nanoparticles in liquid crystal (LC) phases. The creation of such hybrid materials is an important goal for the creation of soft tunable photonic devices, such as the LC laser. Herein, we present a compa...
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| Published in: | Chemphyschem 2014-05, Vol.15 (7), p.1413-1421 |
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| cites | cdi_FETCH-LOGICAL-c5847-e1c0783a1bee683c6ea31e81c9ce77de191e5d2f9d5f5d10c3d6d34846b97dea3 |
| container_end_page | 1421 |
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| container_title | Chemphyschem |
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| creator | Rodarte, Andrea L. Nuno, Zachary S. Cao, Blessing H. Pandolfi, Ronald J. Quint, Makiko T. Ghosh, Sayantani Hein, Jason E. Hirst, Linda S. |
| description | Mesogenic ligands have the potential to provide control over the dispersion and stabilization of nanoparticles in liquid crystal (LC) phases. The creation of such hybrid materials is an important goal for the creation of soft tunable photonic devices, such as the LC laser. Herein, we present a comparison of isotropic and mesogenic ligands attached to the surface of CdSe (core‐only) and CdSe/ZnS (core/shell) quantum dots (QDs). The mesogenic ligand′s flexible arm structure enhances ligand alignment, with the local LC director promoting QD dispersion in the isotropic and nematic phases. To characterize QD dispersion on different length scales, we apply fluorescence microscopy, X‐ray scattering, and scanning confocal photoluminescent imaging. These combined techniques demonstrate that the LC‐modified QDs do not aggregate into the dense clusters observed for dots with simple isotropic ligands when dispersed in liquid crystal, but loosely associate in a fluid‐like droplet with an average interparticle spacing >10 nm. Embedding the QDs in a cholesteric cavity, we observe comparable coupling effects to those reported for more closely packed isotropic ligands.
Dots with liquid‐crystalline ligands are synthesized and dispersed in the nematic and cholesteric phases at different concentrations. Fluorescence microscopy, scanning confocal photoluminescence microscopy, and X‐ray diffraction reveal details of the quantum‐dot (QD) cluster packing. Spectroscopic measurements demonstrate the applicability of the QDs for photonic applications. |
| doi_str_mv | 10.1002/cphc.201301007 |
| format | article |
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Dots with liquid‐crystalline ligands are synthesized and dispersed in the nematic and cholesteric phases at different concentrations. Fluorescence microscopy, scanning confocal photoluminescence microscopy, and X‐ray diffraction reveal details of the quantum‐dot (QD) cluster packing. Spectroscopic measurements demonstrate the applicability of the QDs for photonic applications.</description><identifier>ISSN: 1439-4235</identifier><identifier>EISSN: 1439-7641</identifier><identifier>DOI: 10.1002/cphc.201301007</identifier><identifier>PMID: 24615927</identifier><language>eng</language><publisher>Weinheim: WILEY-VCH Verlag</publisher><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Condensed matter: structure, mechanical and thermal properties ; Cross-disciplinary physics: materials science; rheology ; Exact sciences and technology ; Fluorescence ; ligand exchange ; Ligands ; Liquid crystals ; Materials science ; Nanoscale materials and structures: fabrication and characterization ; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation ; Other topics in nanoscale materials and structures ; Photoluminescence ; Physics ; Quantum dots ; Structure of solids and liquids; crystallography</subject><ispartof>Chemphyschem, 2014-05, Vol.15 (7), p.1413-1421</ispartof><rights>2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim</rights><rights>2015 INIST-CNRS</rights><rights>2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.</rights><rights>2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5847-e1c0783a1bee683c6ea31e81c9ce77de191e5d2f9d5f5d10c3d6d34846b97dea3</citedby><cites>FETCH-LOGICAL-c5847-e1c0783a1bee683c6ea31e81c9ce77de191e5d2f9d5f5d10c3d6d34846b97dea3</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%2Fcphc.201301007$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fcphc.201301007$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>315,786,790,27957,27958,50923,51032</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28483245$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24615927$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Rodarte, Andrea L.</creatorcontrib><creatorcontrib>Nuno, Zachary S.</creatorcontrib><creatorcontrib>Cao, Blessing H.</creatorcontrib><creatorcontrib>Pandolfi, Ronald J.</creatorcontrib><creatorcontrib>Quint, Makiko T.</creatorcontrib><creatorcontrib>Ghosh, Sayantani</creatorcontrib><creatorcontrib>Hein, Jason E.</creatorcontrib><creatorcontrib>Hirst, Linda S.</creatorcontrib><title>Tuning Quantum-Dot Organization in Liquid Crystals for Robust Photonic Applications</title><title>Chemphyschem</title><addtitle>ChemPhysChem</addtitle><description>Mesogenic ligands have the potential to provide control over the dispersion and stabilization of nanoparticles in liquid crystal (LC) phases. The creation of such hybrid materials is an important goal for the creation of soft tunable photonic devices, such as the LC laser. Herein, we present a comparison of isotropic and mesogenic ligands attached to the surface of CdSe (core‐only) and CdSe/ZnS (core/shell) quantum dots (QDs). The mesogenic ligand′s flexible arm structure enhances ligand alignment, with the local LC director promoting QD dispersion in the isotropic and nematic phases. To characterize QD dispersion on different length scales, we apply fluorescence microscopy, X‐ray scattering, and scanning confocal photoluminescent imaging. These combined techniques demonstrate that the LC‐modified QDs do not aggregate into the dense clusters observed for dots with simple isotropic ligands when dispersed in liquid crystal, but loosely associate in a fluid‐like droplet with an average interparticle spacing >10 nm. Embedding the QDs in a cholesteric cavity, we observe comparable coupling effects to those reported for more closely packed isotropic ligands.
Dots with liquid‐crystalline ligands are synthesized and dispersed in the nematic and cholesteric phases at different concentrations. Fluorescence microscopy, scanning confocal photoluminescence microscopy, and X‐ray diffraction reveal details of the quantum‐dot (QD) cluster packing. Spectroscopic measurements demonstrate the applicability of the QDs for photonic applications.</description><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Exact sciences and technology</subject><subject>Fluorescence</subject><subject>ligand exchange</subject><subject>Ligands</subject><subject>Liquid crystals</subject><subject>Materials science</subject><subject>Nanoscale materials and structures: fabrication and characterization</subject><subject>Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation</subject><subject>Other topics in nanoscale materials and structures</subject><subject>Photoluminescence</subject><subject>Physics</subject><subject>Quantum dots</subject><subject>Structure of solids and liquids; crystallography</subject><issn>1439-4235</issn><issn>1439-7641</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqF0M1vFCEYBnBiNPZDrx7NJMbEy6x8wxzbUbcmG7tqjUfCMkxLnYUpDKnrXy_rrqvx4gkIvwfePAA8Q3CGIMSvzXhjZhgiAstRPADHiJKmFpyih_s9xYQdgZOUbiGEEgr0GBxhyhFrsDgGn6-yd_66-pi1n_K6fhOm6jJea-9-6MkFXzlfLdxddl3Vxk2a9JCqPsTqU1jlNFXLmzAF70x1No6DM78i6Ql41Bdnn-7XU_Dl3dur9qJeXM7ft2eL2jBJRW2RgUISjVbWckkMt5ogK5FpjBWis6hBlnW4bzrWsw5BQzreESopXzXlWpNT8Gr37hjDXbZpUmuXjB0G7W3ISSGGCYWEQVroi3_obcjRl-m2CnMqBG2Kmu2UiSGlaHs1RrfWcaMQVNu61bZudai7BJ7vn82rte0O_He_BbzcA52MHvqovXHpj5NUEkxZcc3O3bvBbv7zrWqXF-3fQ9S7rEuT_X7I6vhNcUEEU18_zNX5kkvM5Vxh8hPMYqeE</recordid><startdate>20140519</startdate><enddate>20140519</enddate><creator>Rodarte, Andrea L.</creator><creator>Nuno, Zachary S.</creator><creator>Cao, Blessing H.</creator><creator>Pandolfi, Ronald J.</creator><creator>Quint, Makiko T.</creator><creator>Ghosh, Sayantani</creator><creator>Hein, Jason E.</creator><creator>Hirst, Linda S.</creator><general>WILEY-VCH Verlag</general><general>WILEY‐VCH Verlag</general><general>Wiley</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>K9.</scope><scope>7X8</scope></search><sort><creationdate>20140519</creationdate><title>Tuning Quantum-Dot Organization in Liquid Crystals for Robust Photonic Applications</title><author>Rodarte, Andrea L. ; Nuno, Zachary S. ; Cao, Blessing H. ; Pandolfi, Ronald J. ; Quint, Makiko T. ; Ghosh, Sayantani ; Hein, Jason E. ; Hirst, Linda S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5847-e1c0783a1bee683c6ea31e81c9ce77de191e5d2f9d5f5d10c3d6d34846b97dea3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Exact sciences and technology</topic><topic>Fluorescence</topic><topic>ligand exchange</topic><topic>Ligands</topic><topic>Liquid crystals</topic><topic>Materials science</topic><topic>Nanoscale materials and structures: fabrication and characterization</topic><topic>Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation</topic><topic>Other topics in nanoscale materials and structures</topic><topic>Photoluminescence</topic><topic>Physics</topic><topic>Quantum dots</topic><topic>Structure of solids and liquids; crystallography</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rodarte, Andrea L.</creatorcontrib><creatorcontrib>Nuno, Zachary S.</creatorcontrib><creatorcontrib>Cao, Blessing H.</creatorcontrib><creatorcontrib>Pandolfi, Ronald J.</creatorcontrib><creatorcontrib>Quint, Makiko T.</creatorcontrib><creatorcontrib>Ghosh, Sayantani</creatorcontrib><creatorcontrib>Hein, Jason E.</creatorcontrib><creatorcontrib>Hirst, Linda S.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>MEDLINE - Academic</collection><jtitle>Chemphyschem</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rodarte, Andrea L.</au><au>Nuno, Zachary S.</au><au>Cao, Blessing H.</au><au>Pandolfi, Ronald J.</au><au>Quint, Makiko T.</au><au>Ghosh, Sayantani</au><au>Hein, Jason E.</au><au>Hirst, Linda S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Tuning Quantum-Dot Organization in Liquid Crystals for Robust Photonic Applications</atitle><jtitle>Chemphyschem</jtitle><addtitle>ChemPhysChem</addtitle><date>2014-05-19</date><risdate>2014</risdate><volume>15</volume><issue>7</issue><spage>1413</spage><epage>1421</epage><pages>1413-1421</pages><issn>1439-4235</issn><eissn>1439-7641</eissn><notes>ark:/67375/WNG-BP68268G-2</notes><notes>U.S. Department of Energy</notes><notes>ArticleID:CPHC201301007</notes><notes>National Science Foundation - No. DMR 0852791; No. DMR 1056860</notes><notes>istex:BBC4C21C4BDE9E33C31CA0D323D9FAAF326B0D7E</notes><notes>NSF-COINS - No. 0832819</notes><notes>ObjectType-Article-1</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-2</notes><notes>content type line 23</notes><abstract>Mesogenic ligands have the potential to provide control over the dispersion and stabilization of nanoparticles in liquid crystal (LC) phases. The creation of such hybrid materials is an important goal for the creation of soft tunable photonic devices, such as the LC laser. Herein, we present a comparison of isotropic and mesogenic ligands attached to the surface of CdSe (core‐only) and CdSe/ZnS (core/shell) quantum dots (QDs). The mesogenic ligand′s flexible arm structure enhances ligand alignment, with the local LC director promoting QD dispersion in the isotropic and nematic phases. To characterize QD dispersion on different length scales, we apply fluorescence microscopy, X‐ray scattering, and scanning confocal photoluminescent imaging. These combined techniques demonstrate that the LC‐modified QDs do not aggregate into the dense clusters observed for dots with simple isotropic ligands when dispersed in liquid crystal, but loosely associate in a fluid‐like droplet with an average interparticle spacing >10 nm. Embedding the QDs in a cholesteric cavity, we observe comparable coupling effects to those reported for more closely packed isotropic ligands.
Dots with liquid‐crystalline ligands are synthesized and dispersed in the nematic and cholesteric phases at different concentrations. Fluorescence microscopy, scanning confocal photoluminescence microscopy, and X‐ray diffraction reveal details of the quantum‐dot (QD) cluster packing. Spectroscopic measurements demonstrate the applicability of the QDs for photonic applications.</abstract><cop>Weinheim</cop><pub>WILEY-VCH Verlag</pub><pmid>24615927</pmid><doi>10.1002/cphc.201301007</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Exact sciences and technology Fluorescence ligand exchange Ligands Liquid crystals Materials science Nanoscale materials and structures: fabrication and characterization Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Other topics in nanoscale materials and structures Photoluminescence Physics Quantum dots Structure of solids and liquids crystallography |
| title | Tuning Quantum-Dot Organization in Liquid Crystals for Robust Photonic Applications |
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