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Conference Paper: Molecular active plasmonics: Controlling plasmon resonances with molecular machines

TitleMolecular active plasmonics: Controlling plasmon resonances with molecular machines
Authors
KeywordsAu nanodisks, liquid crystals
Azobenzenes
Localized surface plasmon resonances
Molecular active plasmonics
Molecular machines
Molecular plasmonics
Plasmonics
Rotaxanes
Time-dependent density functional theory
Issue Date2009
Citation
Proceedings of SPIE - The International Society for Optical Engineering, 2009, v. 7395, article no. 73950W How to Cite?
AbstractThe paper studies the molecular-level active control of localized surface plasmon resonances (LSPRs) of Au nanodisk arrays with molecular machines. Two types of molecular machines - azobenzene and rotaxane - have been demonstrated to enable the reversible tuning of the LSPRs via the controlled mechanical movements. Azobenzene molecules have the property of trans-cis photoisomerization and enable the photo-induced nematic (N)-isotropic (I) phase transition of the liquid crystals (LCs) that contain the molecules as dopant. The phase transition of the azobenzene-doped LCs causes the refractive-index difference of the LCs, resulting in the reversible peak shift of the LSPRs of the embedded Au nanodisks due to the sensitivity of the LSPRs to the disks' surroundings' refractive index. Au nanodisk array, coated with rotaxanes, switches its LSPRs reversibly when it is exposed to chemical oxidants and reductants alternatively. The correlation between the peak shift of the LSPRs and the chemically driven mechanical movement of rotaxanes is supported by control experiments and a time-dependent density functional theory (TDDFT)-based, microscopic model. © 2009 SPIE.
Persistent Identifierhttp://hdl.handle.net/10722/332905
ISSN
2023 SCImago Journal Rankings: 0.152
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZheng, Yue Bing-
dc.contributor.authorYang, Ying Wei-
dc.contributor.authorJensen, Lasse-
dc.contributor.authorFang, Lei-
dc.contributor.authorJuluri, Bala Krishna-
dc.contributor.authorFlood, Amar H.-
dc.contributor.authorWeiss, Paul S.-
dc.contributor.authorStoddart, J. Fraser-
dc.contributor.authorHuang, Tony Jun-
dc.date.accessioned2023-10-06T05:15:14Z-
dc.date.available2023-10-06T05:15:14Z-
dc.date.issued2009-
dc.identifier.citationProceedings of SPIE - The International Society for Optical Engineering, 2009, v. 7395, article no. 73950W-
dc.identifier.issn0277-786X-
dc.identifier.urihttp://hdl.handle.net/10722/332905-
dc.description.abstractThe paper studies the molecular-level active control of localized surface plasmon resonances (LSPRs) of Au nanodisk arrays with molecular machines. Two types of molecular machines - azobenzene and rotaxane - have been demonstrated to enable the reversible tuning of the LSPRs via the controlled mechanical movements. Azobenzene molecules have the property of trans-cis photoisomerization and enable the photo-induced nematic (N)-isotropic (I) phase transition of the liquid crystals (LCs) that contain the molecules as dopant. The phase transition of the azobenzene-doped LCs causes the refractive-index difference of the LCs, resulting in the reversible peak shift of the LSPRs of the embedded Au nanodisks due to the sensitivity of the LSPRs to the disks' surroundings' refractive index. Au nanodisk array, coated with rotaxanes, switches its LSPRs reversibly when it is exposed to chemical oxidants and reductants alternatively. The correlation between the peak shift of the LSPRs and the chemically driven mechanical movement of rotaxanes is supported by control experiments and a time-dependent density functional theory (TDDFT)-based, microscopic model. © 2009 SPIE.-
dc.languageeng-
dc.relation.ispartofProceedings of SPIE - The International Society for Optical Engineering-
dc.subjectAu nanodisks, liquid crystals-
dc.subjectAzobenzenes-
dc.subjectLocalized surface plasmon resonances-
dc.subjectMolecular active plasmonics-
dc.subjectMolecular machines-
dc.subjectMolecular plasmonics-
dc.subjectPlasmonics-
dc.subjectRotaxanes-
dc.subjectTime-dependent density functional theory-
dc.titleMolecular active plasmonics: Controlling plasmon resonances with molecular machines-
dc.typeConference_Paper-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1117/12.824525-
dc.identifier.scopuseid_2-s2.0-70449336348-
dc.identifier.volume7395-
dc.identifier.spagearticle no. 73950W-
dc.identifier.epagearticle no. 73950W-
dc.identifier.isiWOS:000291561500013-

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