Kinetics of photo-isomerization of azobenzene containing surfactants

We report on photoisomerization kinetics of azobenzene containing surfactants in aqueous solution. The surfactant molecule consists of a positively charged trimethylammonium bromide head group, a hydrophobic spacer connecting via 6 to 10 CH2 groups to the azobenzene unit, and the hydrophobic tail of...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:The Journal of chemical physics 2020-01, Vol.152 (2), p.024904-024904
Hauptverfasser: Arya, Pooja, Jelken, Joachim, Lomadze, Nino, Santer, Svetlana, Bekir, Marek
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 024904
container_issue 2
container_start_page 024904
container_title The Journal of chemical physics
container_volume 152
creator Arya, Pooja
Jelken, Joachim
Lomadze, Nino
Santer, Svetlana
Bekir, Marek
description We report on photoisomerization kinetics of azobenzene containing surfactants in aqueous solution. The surfactant molecule consists of a positively charged trimethylammonium bromide head group, a hydrophobic spacer connecting via 6 to 10 CH2 groups to the azobenzene unit, and the hydrophobic tail of 1 and 3CH2 groups. Under exposure to light, the azobenzene photoisomerizes from more stable trans- to metastable cis-state, which can be switched back either thermally in dark or by illumination with light of a longer wavelength. The surfactant isomerization is described by a kinetic model of a pseudo first order reaction approaching equilibrium, where the intensity controls the rate of isomerization until the equilibrated state. The rate constants of the trans-cis and cis-trans photoisomerization are calculated as a function of several parameters such as wavelength and intensity of light, the surfactant concentration, and the length of the hydrophobic tail. The thermal relaxation rate from cis- to trans-state is studied as well. The surfactant isomerization shows a different kinetic below and above the critical micellar concentration of the trans isomer due to steric hindrance within the densely packed micelle but does not depend on the spacer length.
doi_str_mv 10.1063/1.5135913
format Article
fullrecord <record><control><sourceid>proquest_pubme</sourceid><recordid>TN_cdi_proquest_miscellaneous_2339792772</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2339792772</sourcerecordid><originalsourceid>FETCH-LOGICAL-c383t-4c8e61f06b616614351b789dc90d6a45c6198dfcbe5752821787dc92e8a5f75d3</originalsourceid><addsrcrecordid>eNp90E1LAzEQBuAgiq3Vg39ACl5U2JpJNsnmKPUTC170vGSzWU1pk5pkBfvr3dqqIOhpYObhZXgROgQ8AszpOYwYUCaBbqE-4EJmgku8jfoYE8gkx7yH9mKcYoxBkHwX9SjIHCiFPrq8t84kq-PQN8PFi08-s9HPTbBLlax3q7Va-sq4pXFmqL1LyjrrnoexDY3SSbkU99FOo2bRHGzmAD1dXz2Ob7PJw83d-GKSaVrQlOW6MBwazCsOnENOGVSikLWWuOYqZ5qDLOpGV4YJRgoCohDdkZhCsUawmg7QyTp3Efxra2Iq5zZqM5spZ3wbS0KpFJIIQTp6_ItOfRtc991KsQ5ywjt1ulY6-BiDacpFsHMV3kvA5araEspNtZ092iS21dzU3_Kryw6crUHUNn2W92_an_jNhx9YLuqGfgAm4I43</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2335339626</pqid></control><display><type>article</type><title>Kinetics of photo-isomerization of azobenzene containing surfactants</title><source>AIP Journals Complete</source><source>Alma/SFX Local Collection</source><creator>Arya, Pooja ; Jelken, Joachim ; Lomadze, Nino ; Santer, Svetlana ; Bekir, Marek</creator><creatorcontrib>Arya, Pooja ; Jelken, Joachim ; Lomadze, Nino ; Santer, Svetlana ; Bekir, Marek</creatorcontrib><description>We report on photoisomerization kinetics of azobenzene containing surfactants in aqueous solution. The surfactant molecule consists of a positively charged trimethylammonium bromide head group, a hydrophobic spacer connecting via 6 to 10 CH2 groups to the azobenzene unit, and the hydrophobic tail of 1 and 3CH2 groups. Under exposure to light, the azobenzene photoisomerizes from more stable trans- to metastable cis-state, which can be switched back either thermally in dark or by illumination with light of a longer wavelength. The surfactant isomerization is described by a kinetic model of a pseudo first order reaction approaching equilibrium, where the intensity controls the rate of isomerization until the equilibrated state. The rate constants of the trans-cis and cis-trans photoisomerization are calculated as a function of several parameters such as wavelength and intensity of light, the surfactant concentration, and the length of the hydrophobic tail. The thermal relaxation rate from cis- to trans-state is studied as well. The surfactant isomerization shows a different kinetic below and above the critical micellar concentration of the trans isomer due to steric hindrance within the densely packed micelle but does not depend on the spacer length.</description><identifier>ISSN: 0021-9606</identifier><identifier>EISSN: 1089-7690</identifier><identifier>DOI: 10.1063/1.5135913</identifier><identifier>PMID: 31941331</identifier><identifier>CODEN: JCPSA6</identifier><language>eng</language><publisher>United States: American Institute of Physics</publisher><subject>Aqueous solutions ; Hydrophobicity ; Isomerization ; Light ; Luminous intensity ; Micelles ; Physics ; Rate constants ; Reaction kinetics ; Steric hindrance ; Surfactants ; Thermal relaxation</subject><ispartof>The Journal of chemical physics, 2020-01, Vol.152 (2), p.024904-024904</ispartof><rights>Author(s)</rights><rights>2020 Author(s). Published under license by AIP Publishing.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c383t-4c8e61f06b616614351b789dc90d6a45c6198dfcbe5752821787dc92e8a5f75d3</citedby><cites>FETCH-LOGICAL-c383t-4c8e61f06b616614351b789dc90d6a45c6198dfcbe5752821787dc92e8a5f75d3</cites><orcidid>0000-0002-5041-3650 ; 0000-0002-6989-9996 ; 0000000269899996 ; 0000000250413650</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/jcp/article-lookup/doi/10.1063/1.5135913$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,780,784,794,4512,27924,27925,76384</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31941331$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Arya, Pooja</creatorcontrib><creatorcontrib>Jelken, Joachim</creatorcontrib><creatorcontrib>Lomadze, Nino</creatorcontrib><creatorcontrib>Santer, Svetlana</creatorcontrib><creatorcontrib>Bekir, Marek</creatorcontrib><title>Kinetics of photo-isomerization of azobenzene containing surfactants</title><title>The Journal of chemical physics</title><addtitle>J Chem Phys</addtitle><description>We report on photoisomerization kinetics of azobenzene containing surfactants in aqueous solution. The surfactant molecule consists of a positively charged trimethylammonium bromide head group, a hydrophobic spacer connecting via 6 to 10 CH2 groups to the azobenzene unit, and the hydrophobic tail of 1 and 3CH2 groups. Under exposure to light, the azobenzene photoisomerizes from more stable trans- to metastable cis-state, which can be switched back either thermally in dark or by illumination with light of a longer wavelength. The surfactant isomerization is described by a kinetic model of a pseudo first order reaction approaching equilibrium, where the intensity controls the rate of isomerization until the equilibrated state. The rate constants of the trans-cis and cis-trans photoisomerization are calculated as a function of several parameters such as wavelength and intensity of light, the surfactant concentration, and the length of the hydrophobic tail. The thermal relaxation rate from cis- to trans-state is studied as well. The surfactant isomerization shows a different kinetic below and above the critical micellar concentration of the trans isomer due to steric hindrance within the densely packed micelle but does not depend on the spacer length.</description><subject>Aqueous solutions</subject><subject>Hydrophobicity</subject><subject>Isomerization</subject><subject>Light</subject><subject>Luminous intensity</subject><subject>Micelles</subject><subject>Physics</subject><subject>Rate constants</subject><subject>Reaction kinetics</subject><subject>Steric hindrance</subject><subject>Surfactants</subject><subject>Thermal relaxation</subject><issn>0021-9606</issn><issn>1089-7690</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp90E1LAzEQBuAgiq3Vg39ACl5U2JpJNsnmKPUTC170vGSzWU1pk5pkBfvr3dqqIOhpYObhZXgROgQ8AszpOYwYUCaBbqE-4EJmgku8jfoYE8gkx7yH9mKcYoxBkHwX9SjIHCiFPrq8t84kq-PQN8PFi08-s9HPTbBLlax3q7Va-sq4pXFmqL1LyjrrnoexDY3SSbkU99FOo2bRHGzmAD1dXz2Ob7PJw83d-GKSaVrQlOW6MBwazCsOnENOGVSikLWWuOYqZ5qDLOpGV4YJRgoCohDdkZhCsUawmg7QyTp3Efxra2Iq5zZqM5spZ3wbS0KpFJIIQTp6_ItOfRtc991KsQ5ywjt1ulY6-BiDacpFsHMV3kvA5araEspNtZ092iS21dzU3_Kryw6crUHUNn2W92_an_jNhx9YLuqGfgAm4I43</recordid><startdate>20200114</startdate><enddate>20200114</enddate><creator>Arya, Pooja</creator><creator>Jelken, Joachim</creator><creator>Lomadze, Nino</creator><creator>Santer, Svetlana</creator><creator>Bekir, Marek</creator><general>American Institute of Physics</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-5041-3650</orcidid><orcidid>https://orcid.org/0000-0002-6989-9996</orcidid><orcidid>https://orcid.org/0000000269899996</orcidid><orcidid>https://orcid.org/0000000250413650</orcidid></search><sort><creationdate>20200114</creationdate><title>Kinetics of photo-isomerization of azobenzene containing surfactants</title><author>Arya, Pooja ; Jelken, Joachim ; Lomadze, Nino ; Santer, Svetlana ; Bekir, Marek</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c383t-4c8e61f06b616614351b789dc90d6a45c6198dfcbe5752821787dc92e8a5f75d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Aqueous solutions</topic><topic>Hydrophobicity</topic><topic>Isomerization</topic><topic>Light</topic><topic>Luminous intensity</topic><topic>Micelles</topic><topic>Physics</topic><topic>Rate constants</topic><topic>Reaction kinetics</topic><topic>Steric hindrance</topic><topic>Surfactants</topic><topic>Thermal relaxation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Arya, Pooja</creatorcontrib><creatorcontrib>Jelken, Joachim</creatorcontrib><creatorcontrib>Lomadze, Nino</creatorcontrib><creatorcontrib>Santer, Svetlana</creatorcontrib><creatorcontrib>Bekir, Marek</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>The Journal of chemical physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Arya, Pooja</au><au>Jelken, Joachim</au><au>Lomadze, Nino</au><au>Santer, Svetlana</au><au>Bekir, Marek</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Kinetics of photo-isomerization of azobenzene containing surfactants</atitle><jtitle>The Journal of chemical physics</jtitle><addtitle>J Chem Phys</addtitle><date>2020-01-14</date><risdate>2020</risdate><volume>152</volume><issue>2</issue><spage>024904</spage><epage>024904</epage><pages>024904-024904</pages><issn>0021-9606</issn><eissn>1089-7690</eissn><coden>JCPSA6</coden><abstract>We report on photoisomerization kinetics of azobenzene containing surfactants in aqueous solution. The surfactant molecule consists of a positively charged trimethylammonium bromide head group, a hydrophobic spacer connecting via 6 to 10 CH2 groups to the azobenzene unit, and the hydrophobic tail of 1 and 3CH2 groups. Under exposure to light, the azobenzene photoisomerizes from more stable trans- to metastable cis-state, which can be switched back either thermally in dark or by illumination with light of a longer wavelength. The surfactant isomerization is described by a kinetic model of a pseudo first order reaction approaching equilibrium, where the intensity controls the rate of isomerization until the equilibrated state. The rate constants of the trans-cis and cis-trans photoisomerization are calculated as a function of several parameters such as wavelength and intensity of light, the surfactant concentration, and the length of the hydrophobic tail. The thermal relaxation rate from cis- to trans-state is studied as well. The surfactant isomerization shows a different kinetic below and above the critical micellar concentration of the trans isomer due to steric hindrance within the densely packed micelle but does not depend on the spacer length.</abstract><cop>United States</cop><pub>American Institute of Physics</pub><pmid>31941331</pmid><doi>10.1063/1.5135913</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-5041-3650</orcidid><orcidid>https://orcid.org/0000-0002-6989-9996</orcidid><orcidid>https://orcid.org/0000000269899996</orcidid><orcidid>https://orcid.org/0000000250413650</orcidid></addata></record>
fulltext fulltext
identifier ISSN: 0021-9606
ispartof The Journal of chemical physics, 2020-01, Vol.152 (2), p.024904-024904
issn 0021-9606
1089-7690
language eng
recordid cdi_proquest_miscellaneous_2339792772
source AIP Journals Complete; Alma/SFX Local Collection
subjects Aqueous solutions
Hydrophobicity
Isomerization
Light
Luminous intensity
Micelles
Physics
Rate constants
Reaction kinetics
Steric hindrance
Surfactants
Thermal relaxation
title Kinetics of photo-isomerization of azobenzene containing surfactants
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-22T08%3A06%3A29IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_pubme&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Kinetics%20of%20photo-isomerization%20of%20azobenzene%20containing%20surfactants&rft.jtitle=The%20Journal%20of%20chemical%20physics&rft.au=Arya,%20Pooja&rft.date=2020-01-14&rft.volume=152&rft.issue=2&rft.spage=024904&rft.epage=024904&rft.pages=024904-024904&rft.issn=0021-9606&rft.eissn=1089-7690&rft.coden=JCPSA6&rft_id=info:doi/10.1063/1.5135913&rft_dat=%3Cproquest_pubme%3E2339792772%3C/proquest_pubme%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2335339626&rft_id=info:pmid/31941331&rfr_iscdi=true