Effect of Mesophase Structure on the Intermolecular Triplet Quenching of Photoexcited ZnTPP and CuTPP Mixtures

Effect of Mesophase Structure on the Intermolecular Triplet Quenching of Photoexcited ZnTPP and CuTPP Mixtures

Time-resolved EPR detection of photoexcited Zn− and Cu−tetraphenylporphyrin (TPP) mixtures oriented in several thermotropic liquid crystals (LCs) is reported. Both the transient triplet EPR spectra of ZnTPP and the doublet ground state CW spectra of CuTPP were recorded and quantitatively analyzed vi...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of physical chemistry (1952) 1996-11, Vol.100 (47), p.18502-18510
Hauptverfasser: Regev, Ayelet, Galili, Tamar, Levanon, Haim
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 18510
container_issue 47
container_start_page 18502
container_title Journal of physical chemistry (1952)
container_volume 100
creator Regev, Ayelet
Galili, Tamar
Levanon, Haim
description Time-resolved EPR detection of photoexcited Zn− and Cu−tetraphenylporphyrin (TPP) mixtures oriented in several thermotropic liquid crystals (LCs) is reported. Both the transient triplet EPR spectra of ZnTPP and the doublet ground state CW spectra of CuTPP were recorded and quantitatively analyzed via line shape analyses over a wide temperature range (130−370 K). It is shown that the photoexcited triplet state of ZnTPP is entirely quenched by the photoexcited CuTPP species exclusively in the fluid smectic phase of a multidomain LC (ZLI-1167), whereas in the other phases of this LC, as well as in other LCs (E-7 and ZLI-4389) there is no indication of any interaction between the different chromophores. The results are interpreted in terms of a ZnTPP−CuTPP transient complex formation, which depends on a favorable mutual orientation of the interacting chromophores, specifically imposed by the layers and multidomain structure of the smectic phase of ZLI-1167.
doi_str_mv 10.1021/jp961756g
format Article
fullrecord <record><control><sourceid>istex_cross</sourceid><recordid>TN_cdi_crossref_primary_10_1021_jp961756g</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>ark_67375_TPS_N8ZFB6N9_G</sourcerecordid><originalsourceid>FETCH-LOGICAL-a210t-4c57b8e785e105b0aafc425cfadb0674ef0c7f2891da2f5544e0cd1303427b103</originalsourceid><addsrcrecordid>eNptkEFPwjAYhhujiYge_Ae9ePAw_bq16zgqESQBnAEvXJqu-wpD2EjbJfjvhWA4eXq_w_M9yfsScs_giUHMnte7XsqkSJcXpMMEZ5GQHC5JByCOoyQV_JrceL8GAJYkrEPqN2vRBNpYOkHf7FbaI50F15rQOqRNTcMK6agO6LbNBk270Y7OXbXbYKCfLdZmVdXL43u-akKDe1MFLOminuc51XVJ--3xmlT7o8_fkiurNx7v_rJLvgZv8_57NP4Yjvov40jHDELEjZBFhjITyEAUoLU1PBbG6rKAVHK0YKSNsx4rdWyF4BzBlCyBhMeyYJB0yePJa1zjvUOrdq7aavejGKjjUOo81IGNTmzlA-7PoHbfKpWJFGqez9Q0Wwxe02lPDQ_8w4nXxqt107r60OQf7y_DuXeT</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Effect of Mesophase Structure on the Intermolecular Triplet Quenching of Photoexcited ZnTPP and CuTPP Mixtures</title><source>ACS Publications</source><creator>Regev, Ayelet ; Galili, Tamar ; Levanon, Haim</creator><creatorcontrib>Regev, Ayelet ; Galili, Tamar ; Levanon, Haim</creatorcontrib><description>Time-resolved EPR detection of photoexcited Zn− and Cu−tetraphenylporphyrin (TPP) mixtures oriented in several thermotropic liquid crystals (LCs) is reported. Both the transient triplet EPR spectra of ZnTPP and the doublet ground state CW spectra of CuTPP were recorded and quantitatively analyzed via line shape analyses over a wide temperature range (130−370 K). It is shown that the photoexcited triplet state of ZnTPP is entirely quenched by the photoexcited CuTPP species exclusively in the fluid smectic phase of a multidomain LC (ZLI-1167), whereas in the other phases of this LC, as well as in other LCs (E-7 and ZLI-4389) there is no indication of any interaction between the different chromophores. The results are interpreted in terms of a ZnTPP−CuTPP transient complex formation, which depends on a favorable mutual orientation of the interacting chromophores, specifically imposed by the layers and multidomain structure of the smectic phase of ZLI-1167.</description><identifier>ISSN: 0022-3654</identifier><identifier>EISSN: 1541-5740</identifier><identifier>DOI: 10.1021/jp961756g</identifier><language>eng</language><publisher>American Chemical Society</publisher><ispartof>Journal of physical chemistry (1952), 1996-11, Vol.100 (47), p.18502-18510</ispartof><rights>Copyright © 1996 American Chemical Society</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a210t-4c57b8e785e105b0aafc425cfadb0674ef0c7f2891da2f5544e0cd1303427b103</citedby><cites>FETCH-LOGICAL-a210t-4c57b8e785e105b0aafc425cfadb0674ef0c7f2891da2f5544e0cd1303427b103</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/jp961756g$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/jp961756g$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,776,780,2752,27053,27901,27902,56713,56763</link.rule.ids></links><search><creatorcontrib>Regev, Ayelet</creatorcontrib><creatorcontrib>Galili, Tamar</creatorcontrib><creatorcontrib>Levanon, Haim</creatorcontrib><title>Effect of Mesophase Structure on the Intermolecular Triplet Quenching of Photoexcited ZnTPP and CuTPP Mixtures</title><title>Journal of physical chemistry (1952)</title><addtitle>J. Phys. Chem</addtitle><description>Time-resolved EPR detection of photoexcited Zn− and Cu−tetraphenylporphyrin (TPP) mixtures oriented in several thermotropic liquid crystals (LCs) is reported. Both the transient triplet EPR spectra of ZnTPP and the doublet ground state CW spectra of CuTPP were recorded and quantitatively analyzed via line shape analyses over a wide temperature range (130−370 K). It is shown that the photoexcited triplet state of ZnTPP is entirely quenched by the photoexcited CuTPP species exclusively in the fluid smectic phase of a multidomain LC (ZLI-1167), whereas in the other phases of this LC, as well as in other LCs (E-7 and ZLI-4389) there is no indication of any interaction between the different chromophores. The results are interpreted in terms of a ZnTPP−CuTPP transient complex formation, which depends on a favorable mutual orientation of the interacting chromophores, specifically imposed by the layers and multidomain structure of the smectic phase of ZLI-1167.</description><issn>0022-3654</issn><issn>1541-5740</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1996</creationdate><recordtype>article</recordtype><recordid>eNptkEFPwjAYhhujiYge_Ae9ePAw_bq16zgqESQBnAEvXJqu-wpD2EjbJfjvhWA4eXq_w_M9yfsScs_giUHMnte7XsqkSJcXpMMEZ5GQHC5JByCOoyQV_JrceL8GAJYkrEPqN2vRBNpYOkHf7FbaI50F15rQOqRNTcMK6agO6LbNBk270Y7OXbXbYKCfLdZmVdXL43u-akKDe1MFLOminuc51XVJ--3xmlT7o8_fkiurNx7v_rJLvgZv8_57NP4Yjvov40jHDELEjZBFhjITyEAUoLU1PBbG6rKAVHK0YKSNsx4rdWyF4BzBlCyBhMeyYJB0yePJa1zjvUOrdq7aavejGKjjUOo81IGNTmzlA-7PoHbfKpWJFGqez9Q0Wwxe02lPDQ_8w4nXxqt107r60OQf7y_DuXeT</recordid><startdate>19961121</startdate><enddate>19961121</enddate><creator>Regev, Ayelet</creator><creator>Galili, Tamar</creator><creator>Levanon, Haim</creator><general>American Chemical Society</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19961121</creationdate><title>Effect of Mesophase Structure on the Intermolecular Triplet Quenching of Photoexcited ZnTPP and CuTPP Mixtures</title><author>Regev, Ayelet ; Galili, Tamar ; Levanon, Haim</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a210t-4c57b8e785e105b0aafc425cfadb0674ef0c7f2891da2f5544e0cd1303427b103</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1996</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Regev, Ayelet</creatorcontrib><creatorcontrib>Galili, Tamar</creatorcontrib><creatorcontrib>Levanon, Haim</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><jtitle>Journal of physical chemistry (1952)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Regev, Ayelet</au><au>Galili, Tamar</au><au>Levanon, Haim</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Mesophase Structure on the Intermolecular Triplet Quenching of Photoexcited ZnTPP and CuTPP Mixtures</atitle><jtitle>Journal of physical chemistry (1952)</jtitle><addtitle>J. Phys. Chem</addtitle><date>1996-11-21</date><risdate>1996</risdate><volume>100</volume><issue>47</issue><spage>18502</spage><epage>18510</epage><pages>18502-18510</pages><issn>0022-3654</issn><eissn>1541-5740</eissn><abstract>Time-resolved EPR detection of photoexcited Zn− and Cu−tetraphenylporphyrin (TPP) mixtures oriented in several thermotropic liquid crystals (LCs) is reported. Both the transient triplet EPR spectra of ZnTPP and the doublet ground state CW spectra of CuTPP were recorded and quantitatively analyzed via line shape analyses over a wide temperature range (130−370 K). It is shown that the photoexcited triplet state of ZnTPP is entirely quenched by the photoexcited CuTPP species exclusively in the fluid smectic phase of a multidomain LC (ZLI-1167), whereas in the other phases of this LC, as well as in other LCs (E-7 and ZLI-4389) there is no indication of any interaction between the different chromophores. The results are interpreted in terms of a ZnTPP−CuTPP transient complex formation, which depends on a favorable mutual orientation of the interacting chromophores, specifically imposed by the layers and multidomain structure of the smectic phase of ZLI-1167.</abstract><pub>American Chemical Society</pub><doi>10.1021/jp961756g</doi><tpages>9</tpages></addata></record>
fulltext fulltext
identifier ISSN: 0022-3654
ispartof Journal of physical chemistry (1952), 1996-11, Vol.100 (47), p.18502-18510
issn 0022-3654
1541-5740
language eng
recordid cdi_crossref_primary_10_1021_jp961756g
source ACS Publications
title Effect of Mesophase Structure on the Intermolecular Triplet Quenching of Photoexcited ZnTPP and CuTPP Mixtures
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-05T01%3A40%3A28IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-istex_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Effect%20of%20Mesophase%20Structure%20on%20the%20Intermolecular%20Triplet%20Quenching%20of%20Photoexcited%20ZnTPP%20and%20CuTPP%20Mixtures&rft.jtitle=Journal%20of%20physical%20chemistry%20(1952)&rft.au=Regev,%20Ayelet&rft.date=1996-11-21&rft.volume=100&rft.issue=47&rft.spage=18502&rft.epage=18510&rft.pages=18502-18510&rft.issn=0022-3654&rft.eissn=1541-5740&rft_id=info:doi/10.1021/jp961756g&rft_dat=%3Cistex_cross%3Eark_67375_TPS_N8ZFB6N9_G%3C/istex_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true