Experimental Confirmation of the Importance of Orientation in the Anomalous Chiral Sensitivity of Second Harmonic Generation
Macromolecular interactions were demonstrated to yield large chiroptical effects in second harmonic generation measurements of ultrathin surface films. Second harmonic generation (SHG) has recently shown to be several orders of magnitude more sensitive to chirality in oriented systems than common li...
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| Veröffentlicht in: | Journal of the American Chemical Society 2003-07, Vol.125 (30), p.9111-9115 |
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| container_issue | 30 |
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| container_title | Journal of the American Chemical Society |
| container_volume | 125 |
| creator | Burke, Brian J Moad, Andrew J Polizzi, Mark A Simpson, Garth J |
| description | Macromolecular interactions were demonstrated to yield large chiroptical effects in second harmonic generation measurements of ultrathin surface films. Second harmonic generation (SHG) has recently shown to be several orders of magnitude more sensitive to chirality in oriented systems than common linear methods, including absorbance circular dichroism (CD) and optical rotary dispersion (ORD). Numerous mechanisms have been developed to explain this anomalous sensitivity, with a general emphasis on understanding the molecular origins of the chromophore chirality. In this work, orientational effects alone are shown to be the dominant factor for generating large SHG chiral dichroic ratios in many surface systems. Three distinct uniaxial surface films of SHG-active achiral chromophores oriented at chiral templated surfaces were observed to yield chiral dichroic ratios as great as 40% in magnitude. |
| doi_str_mv | 10.1021/ja0298500 |
| format | Article |
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Three distinct uniaxial surface films of SHG-active achiral chromophores oriented at chiral templated surfaces were observed to yield chiral dichroic ratios as great as 40% in magnitude.</description><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Exact sciences and technology</subject><subject>Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation</subject><subject>Optical properties of specific thin films</subject><subject>Physics</subject><subject>Polymers; organic compounds</subject><issn>0002-7863</issn><issn>1520-5126</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNpt0M1uEzEUBWALgWhaWPACaDYgsRiwPbbHsyxRSSuKCkpWbKwb51p1mLGDPUGt1IfH-VHLgpVl389HV4eQN4x-ZJSzT2ugvNOS0mdkwiSntWRcPScTSimvW62aE3Ka87pcBdfsJTlhslFdo_SEPFzcbTD5AcMIfTWNwfk0wOhjqKKrxlusroZNTCMEi7uXm-R3dA982IPzEAfo4zZX01ufSsocQ_aj_-PH-92XOdoYVtUlpCEGb6sZBkz7hFfkhYM-4-vjeUYWXy4W08v6-mZ2NT2_rkEIOdYMlk7hSna8U0toW4AlY0oAMIrtSoJTTFOUTHRaOCFb2TXWonUaRScdb87I-0PsJsXfW8yjGXy22PcQsKxtWia1Fo0q8MMB2hRzTujMplQD6d4wanZNm8emi317DN0uB1w9yWO1Bbw7AsgWepdKhT7_4yinjWLF1Qfn84h3j3NIv4xqm1aaxfe5kbOv8uf8xzfz-SkXbDbruE2hVPefBf8CfeyiVA</recordid><startdate>20030730</startdate><enddate>20030730</enddate><creator>Burke, Brian J</creator><creator>Moad, Andrew J</creator><creator>Polizzi, Mark A</creator><creator>Simpson, Garth J</creator><general>American Chemical Society</general><scope>BSCLL</scope><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20030730</creationdate><title>Experimental Confirmation of the Importance of Orientation in the Anomalous Chiral Sensitivity of Second Harmonic Generation</title><author>Burke, Brian J ; Moad, Andrew J ; Polizzi, Mark A ; Simpson, Garth J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a445t-1abf6ed59296ba77aab1164aa10e7d5af6180e514984f457593ccecf8e495f23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Exact sciences and technology</topic><topic>Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation</topic><topic>Optical properties of specific thin films</topic><topic>Physics</topic><topic>Polymers; organic compounds</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Burke, Brian J</creatorcontrib><creatorcontrib>Moad, Andrew J</creatorcontrib><creatorcontrib>Polizzi, Mark A</creatorcontrib><creatorcontrib>Simpson, Garth J</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of the American Chemical Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Burke, Brian J</au><au>Moad, Andrew J</au><au>Polizzi, Mark A</au><au>Simpson, Garth J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental Confirmation of the Importance of Orientation in the Anomalous Chiral Sensitivity of Second Harmonic Generation</atitle><jtitle>Journal of the American Chemical Society</jtitle><addtitle>J. Am. Chem. Soc</addtitle><date>2003-07-30</date><risdate>2003</risdate><volume>125</volume><issue>30</issue><spage>9111</spage><epage>9115</epage><pages>9111-9115</pages><issn>0002-7863</issn><eissn>1520-5126</eissn><coden>JACSAT</coden><abstract>Macromolecular interactions were demonstrated to yield large chiroptical effects in second harmonic generation measurements of ultrathin surface films. Second harmonic generation (SHG) has recently shown to be several orders of magnitude more sensitive to chirality in oriented systems than common linear methods, including absorbance circular dichroism (CD) and optical rotary dispersion (ORD). Numerous mechanisms have been developed to explain this anomalous sensitivity, with a general emphasis on understanding the molecular origins of the chromophore chirality. In this work, orientational effects alone are shown to be the dominant factor for generating large SHG chiral dichroic ratios in many surface systems. 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| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of specific thin films Physics Polymers organic compounds |
| title | Experimental Confirmation of the Importance of Orientation in the Anomalous Chiral Sensitivity of Second Harmonic Generation |
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