Enhancing the Photoluminescence Emission of Conjugated MEH-PPV by Light Processing

Handle URI:
http://hdl.handle.net/10754/598197
Title:
Enhancing the Photoluminescence Emission of Conjugated MEH-PPV by Light Processing
Authors:
Botiz, Ioan; Freyberg, Paul; Leordean, Cosmin; Gabudean, Ana-Maria; Astilean, Simion; Yang, Arnold Chang-Mou; Stingelin, Natalie
Abstract:
We show here that treatment of thin films of conjugated polymers by illumination with light leads to an increase of the intensity of their photoluminescence by up to 42%. The corresponding enhancement of absorbance was much less pronounced. We explain this significant enhancement of photoluminescence by a planarization of the conjugated polymer chains induced by photoexcitations even below the glass transition temperature, possibly due to an increased conjugation length. Interestingly, the photoluminescence remains at the enhanced level for more than 71 h after treatment of the films by illumination with light, likely due to the fact that below the glass transition temperature no restoring force could return the conjugated chains into their initial conformational state. © 2014 American Chemical Society.
Citation:
Botiz I, Freyberg P, Leordean C, Gabudean A-M, Astilean S, et al. (2014) Enhancing the Photoluminescence Emission of Conjugated MEH-PPV by Light Processing. ACS Applied Materials & Interfaces 6: 4974–4979. Available: http://dx.doi.org/10.1021/am4060244.
Publisher:
American Chemical Society (ACS)
Journal:
ACS Applied Materials & Interfaces
KAUST Grant Number:
CRG-1-2012-THO-015
Issue Date:
9-Apr-2014
DOI:
10.1021/am4060244
PubMed ID:
24611888
Type:
Article
ISSN:
1944-8244; 1944-8252
Sponsors:
I.B. thanks Anna Köhler, Eric Bittner, David Vanden Bout, Carlos Silva, Werner Stille, Günter Reiter, and Chung Wing Tsoi for fruitful discussions. I.B. and N.S. acknowledge financial support by the Deutsche Forschungsgemeinschaft through the Freiburg Institute for Advanced Studies (FRIAS). In addition, N.S. acknowledges her support by a European Research Council (ERC) Starting Independent Researcher Fellowship under the grant agreement No. 279587 and KAUST Competitive Research Grant (CRG-1-2012-THO-015).
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorBotiz, Ioanen
dc.contributor.authorFreyberg, Paulen
dc.contributor.authorLeordean, Cosminen
dc.contributor.authorGabudean, Ana-Mariaen
dc.contributor.authorAstilean, Simionen
dc.contributor.authorYang, Arnold Chang-Mouen
dc.contributor.authorStingelin, Natalieen
dc.date.accessioned2016-02-25T13:14:31Zen
dc.date.available2016-02-25T13:14:31Zen
dc.date.issued2014-04-09en
dc.identifier.citationBotiz I, Freyberg P, Leordean C, Gabudean A-M, Astilean S, et al. (2014) Enhancing the Photoluminescence Emission of Conjugated MEH-PPV by Light Processing. ACS Applied Materials & Interfaces 6: 4974–4979. Available: http://dx.doi.org/10.1021/am4060244.en
dc.identifier.issn1944-8244en
dc.identifier.issn1944-8252en
dc.identifier.pmid24611888en
dc.identifier.doi10.1021/am4060244en
dc.identifier.urihttp://hdl.handle.net/10754/598197en
dc.description.abstractWe show here that treatment of thin films of conjugated polymers by illumination with light leads to an increase of the intensity of their photoluminescence by up to 42%. The corresponding enhancement of absorbance was much less pronounced. We explain this significant enhancement of photoluminescence by a planarization of the conjugated polymer chains induced by photoexcitations even below the glass transition temperature, possibly due to an increased conjugation length. Interestingly, the photoluminescence remains at the enhanced level for more than 71 h after treatment of the films by illumination with light, likely due to the fact that below the glass transition temperature no restoring force could return the conjugated chains into their initial conformational state. © 2014 American Chemical Society.en
dc.description.sponsorshipI.B. thanks Anna Köhler, Eric Bittner, David Vanden Bout, Carlos Silva, Werner Stille, Günter Reiter, and Chung Wing Tsoi for fruitful discussions. I.B. and N.S. acknowledge financial support by the Deutsche Forschungsgemeinschaft through the Freiburg Institute for Advanced Studies (FRIAS). In addition, N.S. acknowledges her support by a European Research Council (ERC) Starting Independent Researcher Fellowship under the grant agreement No. 279587 and KAUST Competitive Research Grant (CRG-1-2012-THO-015).en
dc.publisherAmerican Chemical Society (ACS)en
dc.subjectConjugated polymersen
dc.subjectenhanced photoluminescenceen
dc.subjectglass transition temperatureen
dc.subjectmolecular conformationen
dc.subjectprocessing by lighten
dc.subjectthin filmsen
dc.titleEnhancing the Photoluminescence Emission of Conjugated MEH-PPV by Light Processingen
dc.typeArticleen
dc.identifier.journalACS Applied Materials & Interfacesen
dc.contributor.institutionFreiburg Institute for Advanced Studies, Freiburg, Germanyen
dc.contributor.institutionImperial College London, London, United Kingdomen
dc.contributor.institutionUniversitatea Babes-Bolyai din Cluj-Napoca, Cluj Napoca, Romaniaen
dc.contributor.institutionUniversitat Freiburg im Breisgau, Freiburg im Breisgau, Germanyen
dc.contributor.institutionNational Tsing Hua University, Hsin-chu, Taiwanen
kaust.grant.numberCRG-1-2012-THO-015en

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