PittsburghV1, Main, Exploration, bibRecord, 003949

Chiral Templating of Self-Assembling Nanostructures by Circularly Polarized Light

Identifieur interne : 003949 ( Main/Exploration ); précédent : 003948; suivant : 003950

Chiral Templating of Self-Assembling Nanostructures by Circularly Polarized Light

Auteurs : Jihyeon Yeom [États-Unis] ; Bongjun Yeom [États-Unis] ; Henry Chan [États-Unis] ; Kyle W. Smith [États-Unis] ; Sergio Dominguez-Medina [États-Unis] ; Joong Hwan Bahng [États-Unis] ; Gongpu Zhao [États-Unis] ; Wei-Shun Chang [États-Unis] ; Sung Jin Chang [Corée du Sud] ; Andrey Chuvilin [Espagne] ; Dzmitry Melnikau [Espagne] ; Andrey L. Rogach ; Peijun Zhang [États-Unis] ; Stephan Link [États-Unis] ; Petr Král [États-Unis] ; Nicholas A. Kotov [États-Unis]

Source :

Nature materials [ 1476-1122 ] ; 2014.

RBID : PMC:4387888

Descripteurs français

KwdFr :
- Nanostructures (), Photons, Processus photochimiques, Stéréoisomérie.
MESH :
- Nanostructures, Photons, Processus photochimiques, Stéréoisomérie.

English descriptors

KwdEn :
- Nanostructures (chemistry), Photochemical Processes, Photons, Stereoisomerism.
MESH :
- chemistry : Nanostructures.
- Photochemical Processes, Photons, Stereoisomerism.

Abstract

Chemical reactions affected by spin angular momenta of circularly polarized photons are rare and display low enantiomeric excess. High optical and chemical activity of nanoparticles (NPs) should facilitate the transfer of spin angular momenta of photons to nanoscale materials but such processes are unknown. Here we demonstrate that circularly polarized light (CPL) strongly affects self-assembly of racemic CdTe NPs. Illumination of NP dispersions with right- and left-handed CPL induces the formation of right- and left-handed twisted nanoribbons, respectively. Enantiomeric excess of such reactions exceeds 30% which is ~10 times higher than other CPL-induced reactions. Illumination with linearly polarized light and assembly in the dark led to straight nanoribbons. The mechanism of “templation” of NP assemblies by CPL is associated with selective photoactivation of chiral NPs and clusters followed by their photooxidation. Chiral anisotropy of interactions translates into chirality of the assembled ribbons. The ability of NPs to retain polarization information, or the “imprint” of incident photons opens new pathways for the synthesis of chiral photonic materials and allows for better understanding of the origins of biomolecular homochirality.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4387888

DOI: 10.1038/nmat4125
PubMed: 25401922
PubMed Central: 4387888

Affiliations:

Le document en format XML

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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Chiral Templating of Self-Assembling Nanostructures by Circularly Polarized Light</title>
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<author><name sortKey="Rogach, Andrey L" sort="Rogach, Andrey L" uniqKey="Rogach A" first="Andrey L." last="Rogach">Andrey L. Rogach</name>
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<author><name sortKey="Zhang, Peijun" sort="Zhang, Peijun" uniqKey="Zhang P" first="Peijun" last="Zhang">Peijun Zhang</name>
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<author><name sortKey="Link, Stephan" sort="Link, Stephan" uniqKey="Link S" first="Stephan" last="Link">Stephan Link</name>
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<wicri:regionArea>Department of Chemistry, Rice University, Houston TX 77005</wicri:regionArea>
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<author><name sortKey="Kral, Petr" sort="Kral, Petr" uniqKey="Kral P" first="Petr" last="Král">Petr Král</name>
<affiliation wicri:level="4"><nlm:aff id="A3">Department of Chemistry, University of Illinois at Chicago, Chicago, IL 60607, USA</nlm:aff>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Chemistry, University of Illinois at Chicago, Chicago, IL 60607</wicri:regionArea>
<placeName><region type="state">Illinois</region>
<settlement type="city">Chicago</settlement>
</placeName>
<orgName type="university">Université de l'Illinois à Chicago</orgName>
</affiliation>
<affiliation wicri:level="4"><nlm:aff id="A12">Department of Physics, University of Illinois at Chicago, Chicago, IL 60607, USA</nlm:aff>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Physics, University of Illinois at Chicago, Chicago, IL 60607</wicri:regionArea>
<placeName><region type="state">Illinois</region>
<settlement type="city">Chicago</settlement>
</placeName>
<orgName type="university">Université de l'Illinois à Chicago</orgName>
</affiliation>
</author>
<author><name sortKey="Kotov, Nicholas A" sort="Kotov, Nicholas A" uniqKey="Kotov N" first="Nicholas A." last="Kotov">Nicholas A. Kotov</name>
<affiliation wicri:level="2"><nlm:aff id="A1">Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA</nlm:aff>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI 48109</wicri:regionArea>
<placeName><region type="state">Michigan</region>
</placeName>
</affiliation>
<affiliation wicri:level="2"><nlm:aff id="A2">Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA</nlm:aff>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109</wicri:regionArea>
<placeName><region type="state">Michigan</region>
</placeName>
</affiliation>
<affiliation wicri:level="2"><nlm:aff id="A5">Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA</nlm:aff>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109</wicri:regionArea>
<placeName><region type="state">Michigan</region>
</placeName>
</affiliation>
</author>
</analytic>
<series><title level="j">Nature materials</title>
<idno type="ISSN">1476-1122</idno>
<imprint><date when="2014">2014</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Nanostructures (chemistry)</term>
<term>Photochemical Processes</term>
<term>Photons</term>
<term>Stereoisomerism</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Nanostructures ()</term>
<term>Photons</term>
<term>Processus photochimiques</term>
<term>Stéréoisomérie</term>
</keywords>
<keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Nanostructures</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Photochemical Processes</term>
<term>Photons</term>
<term>Stereoisomerism</term>
</keywords>
<keywords scheme="MESH" xml:lang="fr"><term>Nanostructures</term>
<term>Photons</term>
<term>Processus photochimiques</term>
<term>Stéréoisomérie</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en"><p id="P1">Chemical reactions affected by spin angular momenta of circularly polarized photons are rare and display low enantiomeric excess. High optical and chemical activity of nanoparticles (NPs) should facilitate the transfer of spin angular momenta of photons to nanoscale materials but such processes are unknown. Here we demonstrate that circularly polarized light (CPL) strongly affects self-assembly of racemic CdTe NPs. Illumination of NP dispersions with right- and left-handed CPL induces the formation of right- and left-handed twisted nanoribbons, respectively. Enantiomeric excess of such reactions exceeds 30% which is ~10 times higher than other CPL-induced reactions. Illumination with linearly polarized light and assembly in the dark led to straight nanoribbons. The mechanism of “templation” of NP assemblies by CPL is associated with selective photoactivation of chiral NPs and clusters followed by their photooxidation. Chiral anisotropy of interactions translates into chirality of the assembled ribbons. The ability of NPs to retain polarization information, or the “imprint” of incident photons opens new pathways for the synthesis of chiral photonic materials and allows for better understanding of the origins of biomolecular homochirality.</p>
</div>
</front>
</TEI>
<affiliations><list><country><li>Corée du Sud</li>
<li>Espagne</li>
<li>États-Unis</li>
</country>
<region><li>Illinois</li>
<li>Michigan</li>
<li>Pennsylvanie</li>
</region>
<settlement><li>Chicago</li>
</settlement>
<orgName><li>Université de l'Illinois à Chicago</li>
</orgName>
</list>
<tree><noCountry><name sortKey="Rogach, Andrey L" sort="Rogach, Andrey L" uniqKey="Rogach A" first="Andrey L." last="Rogach">Andrey L. Rogach</name>
</noCountry>
<country name="États-Unis"><region name="Michigan"><name sortKey="Yeom, Jihyeon" sort="Yeom, Jihyeon" uniqKey="Yeom J" first="Jihyeon" last="Yeom">Jihyeon Yeom</name>
</region>
<name sortKey="Bahng, Joong Hwan" sort="Bahng, Joong Hwan" uniqKey="Bahng J" first="Joong Hwan" last="Bahng">Joong Hwan Bahng</name>
<name sortKey="Chan, Henry" sort="Chan, Henry" uniqKey="Chan H" first="Henry" last="Chan">Henry Chan</name>
<name sortKey="Chang, Wei Shun" sort="Chang, Wei Shun" uniqKey="Chang W" first="Wei-Shun" last="Chang">Wei-Shun Chang</name>
<name sortKey="Dominguez Medina, Sergio" sort="Dominguez Medina, Sergio" uniqKey="Dominguez Medina S" first="Sergio" last="Dominguez-Medina">Sergio Dominguez-Medina</name>
<name sortKey="Kotov, Nicholas A" sort="Kotov, Nicholas A" uniqKey="Kotov N" first="Nicholas A." last="Kotov">Nicholas A. Kotov</name>
<name sortKey="Kotov, Nicholas A" sort="Kotov, Nicholas A" uniqKey="Kotov N" first="Nicholas A." last="Kotov">Nicholas A. Kotov</name>
<name sortKey="Kotov, Nicholas A" sort="Kotov, Nicholas A" uniqKey="Kotov N" first="Nicholas A." last="Kotov">Nicholas A. Kotov</name>
<name sortKey="Kral, Petr" sort="Kral, Petr" uniqKey="Kral P" first="Petr" last="Král">Petr Král</name>
<name sortKey="Kral, Petr" sort="Kral, Petr" uniqKey="Kral P" first="Petr" last="Král">Petr Král</name>
<name sortKey="Link, Stephan" sort="Link, Stephan" uniqKey="Link S" first="Stephan" last="Link">Stephan Link</name>
<name sortKey="Smith, Kyle W" sort="Smith, Kyle W" uniqKey="Smith K" first="Kyle W." last="Smith">Kyle W. Smith</name>
<name sortKey="Yeom, Bongjun" sort="Yeom, Bongjun" uniqKey="Yeom B" first="Bongjun" last="Yeom">Bongjun Yeom</name>
<name sortKey="Zhang, Peijun" sort="Zhang, Peijun" uniqKey="Zhang P" first="Peijun" last="Zhang">Peijun Zhang</name>
<name sortKey="Zhao, Gongpu" sort="Zhao, Gongpu" uniqKey="Zhao G" first="Gongpu" last="Zhao">Gongpu Zhao</name>
</country>
<country name="Corée du Sud"><noRegion><name sortKey="Chang, Sung Jin" sort="Chang, Sung Jin" uniqKey="Chang S" first="Sung Jin" last="Chang">Sung Jin Chang</name>
</noRegion>
</country>
<country name="Espagne"><noRegion><name sortKey="Chuvilin, Andrey" sort="Chuvilin, Andrey" uniqKey="Chuvilin A" first="Andrey" last="Chuvilin">Andrey Chuvilin</name>
</noRegion>
<name sortKey="Chuvilin, Andrey" sort="Chuvilin, Andrey" uniqKey="Chuvilin A" first="Andrey" last="Chuvilin">Andrey Chuvilin</name>
<name sortKey="Melnikau, Dzmitry" sort="Melnikau, Dzmitry" uniqKey="Melnikau D" first="Dzmitry" last="Melnikau">Dzmitry Melnikau</name>
<name sortKey="Melnikau, Dzmitry" sort="Melnikau, Dzmitry" uniqKey="Melnikau D" first="Dzmitry" last="Melnikau">Dzmitry Melnikau</name>
</country>
</tree>
</affiliations>
</record>

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Chiral Templating of Self-Assembling Nanostructures by Circularly Polarized Light

Chiral Templating of Self-Assembling Nanostructures by Circularly Polarized Light

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