Triplet exciton diffusion and phosphorescence quenching in iridium(III)-centered dendrimers

Triplet exciton diffusion and phosphorescence quenching in iridium(III)-centered dendrimers

A study of triplet-triplet exciton annihilation and nonradiative decay in films of iridium(III)-centered phosphorescent dendrimers is reported. The average separation of the chromophore was tuned by the molecular structure and also by blending with a host material. It was found that triplet exciton...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physical review letters 2008-01, Vol.100 (1), p.017402-017402, Article 017402
Hauptverfasser: Ribierre, J C, Ruseckas, A, Knights, K, Staton, S V, Cumpstey, N, Burn, P L, Samuel, I D W
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 017402
container_issue 1
container_start_page 017402
container_title Physical review letters
container_volume 100
creator Ribierre, J C
Ruseckas, A
Knights, K
Staton, S V
Cumpstey, N
Burn, P L
Samuel, I D W
description A study of triplet-triplet exciton annihilation and nonradiative decay in films of iridium(III)-centered phosphorescent dendrimers is reported. The average separation of the chromophore was tuned by the molecular structure and also by blending with a host material. It was found that triplet exciton hopping is controlled by electron exchange interactions and can be over 600 times faster than phosphorescence quenching. Nonradiative decay occurs by weak dipole-dipole interactions and is independent of exciton diffusion, except in very thin films (
doi_str_mv 10.1103/physrevlett.100.017402
format Article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_70250531</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>70250531</sourcerecordid><originalsourceid>FETCH-LOGICAL-c428t-602c47a97c553a51c6f5bb8c10e663e34ce1a15dd084ebe4e76d79d79d5a67823</originalsourceid><addsrcrecordid>eNpFkNtKAzEQhoMotlZfoeyV6MXWmewhu5ciHgoFReqVF0s2mbWRPZnsFvv2prQgTJghM__kz8fYHGGBCNFdv9k5S9uahmGBAAtAEQM_YVMEkYcCMT5lU4AIwxxATNiFc98AgDzNztkEMx7xjMOUfa6t6f2WgH6VGbo20KaqRmd8JVsd9JvO-WPJKWoVBT-jTxvTfgWmDYw12ozNzXK5vA19fyBLOtDUamsasu6SnVWydnR1zDP28fS4fngJV6_Py4f7Vahing1hClzFQuZCJUkkE1RplZRlphAoTSOKYkUoMdEasphKikmkWuT7SGQq_E9m7Pqwt7edN-iGojHeb13LlrrRFQJ4AkmEfjA9DCrbOY-vKnrvVNpdgVDssRZvHus7bVceq7-D4oDVC-fHF8ayIf0vO3KM_gAqenhI</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>70250531</pqid></control><display><type>article</type><title>Triplet exciton diffusion and phosphorescence quenching in iridium(III)-centered dendrimers</title><source>American Physical Society Journals</source><creator>Ribierre, J C ; Ruseckas, A ; Knights, K ; Staton, S V ; Cumpstey, N ; Burn, P L ; Samuel, I D W</creator><creatorcontrib>Ribierre, J C ; Ruseckas, A ; Knights, K ; Staton, S V ; Cumpstey, N ; Burn, P L ; Samuel, I D W</creatorcontrib><description>A study of triplet-triplet exciton annihilation and nonradiative decay in films of iridium(III)-centered phosphorescent dendrimers is reported. The average separation of the chromophore was tuned by the molecular structure and also by blending with a host material. It was found that triplet exciton hopping is controlled by electron exchange interactions and can be over 600 times faster than phosphorescence quenching. Nonradiative decay occurs by weak dipole-dipole interactions and is independent of exciton diffusion, except in very thin films (&lt;20 nm) where surface quenching dominates the decay.</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/physrevlett.100.017402</identifier><identifier>PMID: 18232820</identifier><language>eng</language><publisher>United States</publisher><ispartof>Physical review letters, 2008-01, Vol.100 (1), p.017402-017402, Article 017402</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c428t-602c47a97c553a51c6f5bb8c10e663e34ce1a15dd084ebe4e76d79d79d5a67823</citedby><cites>FETCH-LOGICAL-c428t-602c47a97c553a51c6f5bb8c10e663e34ce1a15dd084ebe4e76d79d79d5a67823</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,2876,2877,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18232820$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Ribierre, J C</creatorcontrib><creatorcontrib>Ruseckas, A</creatorcontrib><creatorcontrib>Knights, K</creatorcontrib><creatorcontrib>Staton, S V</creatorcontrib><creatorcontrib>Cumpstey, N</creatorcontrib><creatorcontrib>Burn, P L</creatorcontrib><creatorcontrib>Samuel, I D W</creatorcontrib><title>Triplet exciton diffusion and phosphorescence quenching in iridium(III)-centered dendrimers</title><title>Physical review letters</title><addtitle>Phys Rev Lett</addtitle><description>A study of triplet-triplet exciton annihilation and nonradiative decay in films of iridium(III)-centered phosphorescent dendrimers is reported. The average separation of the chromophore was tuned by the molecular structure and also by blending with a host material. It was found that triplet exciton hopping is controlled by electron exchange interactions and can be over 600 times faster than phosphorescence quenching. Nonradiative decay occurs by weak dipole-dipole interactions and is independent of exciton diffusion, except in very thin films (&lt;20 nm) where surface quenching dominates the decay.</description><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNpFkNtKAzEQhoMotlZfoeyV6MXWmewhu5ciHgoFReqVF0s2mbWRPZnsFvv2prQgTJghM__kz8fYHGGBCNFdv9k5S9uahmGBAAtAEQM_YVMEkYcCMT5lU4AIwxxATNiFc98AgDzNztkEMx7xjMOUfa6t6f2WgH6VGbo20KaqRmd8JVsd9JvO-WPJKWoVBT-jTxvTfgWmDYw12ozNzXK5vA19fyBLOtDUamsasu6SnVWydnR1zDP28fS4fngJV6_Py4f7Vahing1hClzFQuZCJUkkE1RplZRlphAoTSOKYkUoMdEasphKikmkWuT7SGQq_E9m7Pqwt7edN-iGojHeb13LlrrRFQJ4AkmEfjA9DCrbOY-vKnrvVNpdgVDssRZvHus7bVceq7-D4oDVC-fHF8ayIf0vO3KM_gAqenhI</recordid><startdate>20080111</startdate><enddate>20080111</enddate><creator>Ribierre, J C</creator><creator>Ruseckas, A</creator><creator>Knights, K</creator><creator>Staton, S V</creator><creator>Cumpstey, N</creator><creator>Burn, P L</creator><creator>Samuel, I D W</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20080111</creationdate><title>Triplet exciton diffusion and phosphorescence quenching in iridium(III)-centered dendrimers</title><author>Ribierre, J C ; Ruseckas, A ; Knights, K ; Staton, S V ; Cumpstey, N ; Burn, P L ; Samuel, I D W</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c428t-602c47a97c553a51c6f5bb8c10e663e34ce1a15dd084ebe4e76d79d79d5a67823</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ribierre, J C</creatorcontrib><creatorcontrib>Ruseckas, A</creatorcontrib><creatorcontrib>Knights, K</creatorcontrib><creatorcontrib>Staton, S V</creatorcontrib><creatorcontrib>Cumpstey, N</creatorcontrib><creatorcontrib>Burn, P L</creatorcontrib><creatorcontrib>Samuel, I D W</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ribierre, J C</au><au>Ruseckas, A</au><au>Knights, K</au><au>Staton, S V</au><au>Cumpstey, N</au><au>Burn, P L</au><au>Samuel, I D W</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Triplet exciton diffusion and phosphorescence quenching in iridium(III)-centered dendrimers</atitle><jtitle>Physical review letters</jtitle><addtitle>Phys Rev Lett</addtitle><date>2008-01-11</date><risdate>2008</risdate><volume>100</volume><issue>1</issue><spage>017402</spage><epage>017402</epage><pages>017402-017402</pages><artnum>017402</artnum><issn>0031-9007</issn><eissn>1079-7114</eissn><abstract>A study of triplet-triplet exciton annihilation and nonradiative decay in films of iridium(III)-centered phosphorescent dendrimers is reported. The average separation of the chromophore was tuned by the molecular structure and also by blending with a host material. It was found that triplet exciton hopping is controlled by electron exchange interactions and can be over 600 times faster than phosphorescence quenching. Nonradiative decay occurs by weak dipole-dipole interactions and is independent of exciton diffusion, except in very thin films (&lt;20 nm) where surface quenching dominates the decay.</abstract><cop>United States</cop><pmid>18232820</pmid><doi>10.1103/physrevlett.100.017402</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0031-9007
ispartof Physical review letters, 2008-01, Vol.100 (1), p.017402-017402, Article 017402
issn 0031-9007
1079-7114
language eng
recordid cdi_proquest_miscellaneous_70250531
source American Physical Society Journals
title Triplet exciton diffusion and phosphorescence quenching in iridium(III)-centered dendrimers
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-22T21%3A26%3A31IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Triplet%20exciton%20diffusion%20and%20phosphorescence%20quenching%20in%20iridium(III)-centered%20dendrimers&rft.jtitle=Physical%20review%20letters&rft.au=Ribierre,%20J%20C&rft.date=2008-01-11&rft.volume=100&rft.issue=1&rft.spage=017402&rft.epage=017402&rft.pages=017402-017402&rft.artnum=017402&rft.issn=0031-9007&rft.eissn=1079-7114&rft_id=info:doi/10.1103/physrevlett.100.017402&rft_dat=%3Cproquest_cross%3E70250531%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=70250531&rft_id=info:pmid/18232820&rfr_iscdi=true