TRANSIENT PHENOMENA IN THE PULSE RADIOLYSIS OF RETINYL POLYENES—7. RADICAL ANIONS OF VITAMIN A AND ITS DERIVATIVES
Identifieur interne : 002708 ( Istex/Corpus ); précédent : 002707; suivant : 002709TRANSIENT PHENOMENA IN THE PULSE RADIOLYSIS OF RETINYL POLYENES—7. RADICAL ANIONS OF VITAMIN A AND ITS DERIVATIVES
Auteurs : K. Bhattacharyya ; K. Bobrowski ; S. Rajadurai ; P. K. DasSource :
- Photochemistry and Photobiology [ 0031-8655 ] ; 1988-01.
Abstract
Abstract— Upon e‐‐pulse irradiation in nonprotic solvents, all‐trans retinol (ROH) and retinylmethyl ether (ROMe) form transient species (τ= 0.5–7μs, λmax=575–590 nm) identifiable as radical anions. Similar species are also formed upon laser pulse photoexcitation of these retinyl derivatives in the presence of N,N‐dimethylaniline in acetonitrile. In contrast, electron transfer or attachment to all‐trans retinyl acetate (ROAc) and palmitate (ROPa) results in ‘instantaneous’ loss of carboxylate anions from electron adducts giving the retinylmethyl radical (R‐, λmax= 395 nm, τk > 100 μ,s); the radical anions in these cases are too short‐lived to be detected by nanosecond pulse radiolysis. The lifetimes of radical anions of ROH and ROMe are very sensitive to water and alcohols (e.g. kq= 107M‐1 s‐1 with methanol as quencher for ROH‐ in tetrahydrofuran). Based on these findings, the spectral dissimilarity of the one‐electron reduction products from ROH and ROAc in alcohols and aqueous micelles becomes explainable in terms of fast formation of protonated radical anions (RH(OH), τ1/2, > 100 μs, λmax=370–375 nm) in the case of ROH and of retinylmethyl radical via loss of AcO‐ from radical anion in the case of ROAc. In tetrahydrofuran, the complexation of ROH‐ with cations such as Na+ and Bu4N+ affects the relative importance of its major decay modes, namely, protonation and dehydroxylation, the latter process being significantly enhanced by the presence of Na+.
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DOI: 10.1111/j.1751-1097.1988.tb02697.x
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Rajadurai</name><affiliation><mods:affiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</mods:affiliation></affiliation></author><author><name sortKey="Das, P K" sort="Das, P K" uniqKey="Das P" first="P. K." last="Das">P. K. Das</name><affiliation><mods:affiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:51EE7565FB2452DB52515B594927875CD8413D83</idno><date when="1988" year="1988">1988</date><idno type="doi">10.1111/j.1751-1097.1988.tb02697.x</idno><idno type="url">https://api.istex.fr/document/51EE7565FB2452DB52515B594927875CD8413D83/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">002708</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">TRANSIENT PHENOMENA IN THE PULSE RADIOLYSIS OF RETINYL POLYENES—7. RADICAL ANIONS OF VITAMIN A AND ITS DERIVATIVES</title><author><name sortKey="Bhattacharyya, K" sort="Bhattacharyya, K" uniqKey="Bhattacharyya K" first="K." last="Bhattacharyya">K. Bhattacharyya</name><affiliation><mods:affiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</mods:affiliation></affiliation></author><author><name sortKey="Bobrowski, K" sort="Bobrowski, K" uniqKey="Bobrowski K" first="K." last="Bobrowski">K. Bobrowski</name><affiliation><mods:affiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</mods:affiliation></affiliation></author><author><name sortKey="Rajadurai, S" sort="Rajadurai, S" uniqKey="Rajadurai S" first="S." last="Rajadurai">S. Rajadurai</name><affiliation><mods:affiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</mods:affiliation></affiliation></author><author><name sortKey="Das, P K" sort="Das, P K" uniqKey="Das P" first="P. K." last="Das">P. K. Das</name><affiliation><mods:affiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Photochemistry and Photobiology</title><idno type="ISSN">0031-8655</idno><idno type="eISSN">1751-1097</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="1988-01">1988-01</date><biblScope unit="volume">47</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="73">73</biblScope><biblScope unit="page" to="83">83</biblScope></imprint><idno type="ISSN">0031-8655</idno></series><idno type="istex">51EE7565FB2452DB52515B594927875CD8413D83</idno><idno type="DOI">10.1111/j.1751-1097.1988.tb02697.x</idno><idno type="ArticleID">PHP73</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0031-8655</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract— Upon e‐‐pulse irradiation in nonprotic solvents, all‐trans retinol (ROH) and retinylmethyl ether (ROMe) form transient species (τ= 0.5–7μs, λmax=575–590 nm) identifiable as radical anions. Similar species are also formed upon laser pulse photoexcitation of these retinyl derivatives in the presence of N,N‐dimethylaniline in acetonitrile. In contrast, electron transfer or attachment to all‐trans retinyl acetate (ROAc) and palmitate (ROPa) results in ‘instantaneous’ loss of carboxylate anions from electron adducts giving the retinylmethyl radical (R‐, λmax= 395 nm, τk > 100 μ,s); the radical anions in these cases are too short‐lived to be detected by nanosecond pulse radiolysis. The lifetimes of radical anions of ROH and ROMe are very sensitive to water and alcohols (e.g. kq= 107M‐1 s‐1 with methanol as quencher for ROH‐ in tetrahydrofuran). Based on these findings, the spectral dissimilarity of the one‐electron reduction products from ROH and ROAc in alcohols and aqueous micelles becomes explainable in terms of fast formation of protonated radical anions (RH(OH), τ1/2, > 100 μs, λmax=370–375 nm) in the case of ROH and of retinylmethyl radical via loss of AcO‐ from radical anion in the case of ROAc. In tetrahydrofuran, the complexation of ROH‐ with cations such as Na+ and Bu4N+ affects the relative importance of its major decay modes, namely, protonation and dehydroxylation, the latter process being significantly enhanced by the presence of Na+.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>K. Bhattacharyya</name><affiliations><json:string>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</json:string></affiliations></json:item><json:item><name>K. Bobrowski</name><affiliations><json:string>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</json:string></affiliations></json:item><json:item><name>S. Rajadurai</name><affiliations><json:string>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</json:string></affiliations></json:item><json:item><name>P. K. Das</name><affiliations><json:string>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</json:string></affiliations></json:item></author><articleId><json:string>PHP73</json:string></articleId><language><json:string>eng</json:string></language><abstract>Abstract— Upon e‐‐pulse irradiation in nonprotic solvents, all‐trans retinol (ROH) and retinylmethyl ether (ROMe) form transient species (τ= 0.5–7μs, λmax=575–590 nm) identifiable as radical anions. Similar species are also formed upon laser pulse photoexcitation of these retinyl derivatives in the presence of N,N‐dimethylaniline in acetonitrile. In contrast, electron transfer or attachment to all‐trans retinyl acetate (ROAc) and palmitate (ROPa) results in ‘instantaneous’ loss of carboxylate anions from electron adducts giving the retinylmethyl radical (R‐, λmax= 395 nm, τk > 100 μ,s); the radical anions in these cases are too short‐lived to be detected by nanosecond pulse radiolysis. The lifetimes of radical anions of ROH and ROMe are very sensitive to water and alcohols (e.g. kq= 107M‐1 s‐1 with methanol as quencher for ROH‐ in tetrahydrofuran). Based on these findings, the spectral dissimilarity of the one‐electron reduction products from ROH and ROAc in alcohols and aqueous micelles becomes explainable in terms of fast formation of protonated radical anions (RH(OH), τ1/2, > 100 μs, λmax=370–375 nm) in the case of ROH and of retinylmethyl radical via loss of AcO‐ from radical anion in the case of ROAc. In tetrahydrofuran, the complexation of ROH‐ with cations such as Na+ and Bu4N+ affects the relative importance of its major decay modes, namely, protonation and dehydroxylation, the latter process being significantly enhanced by the presence of Na+.</abstract><qualityIndicators><score>8.164</score><pdfVersion>1.4</pdfVersion><pdfPageSize>522 x 773.759 pts</pdfPageSize><refBibsNative>true</refBibsNative><keywordCount>0</keywordCount><abstractCharCount>1476</abstractCharCount><pdfWordCount>7127</pdfWordCount><pdfCharCount>40664</pdfCharCount><pdfPageCount>11</pdfPageCount><abstractWordCount>222</abstractWordCount></qualityIndicators><title>TRANSIENT PHENOMENA IN THE PULSE RADIOLYSIS OF RETINYL POLYENES—7. 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RADICAL ANIONS OF VITAMIN A AND ITS DERIVATIVES</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><availability><p>WILEY</p></availability><date>1988</date></publicationStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">TRANSIENT PHENOMENA IN THE PULSE RADIOLYSIS OF RETINYL POLYENES—7. RADICAL ANIONS OF VITAMIN A AND ITS DERIVATIVES</title><author><persName><forename type="first">K.</forename><surname>Bhattacharyya</surname></persName><note type="biography">*Department of Chemistry, Columbia University, New York, N.Y. 10027.</note><affiliation>*Department of Chemistry, Columbia University, New York, N.Y. 10027.</affiliation><affiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</affiliation></author><author><persName><forename type="first">K.</forename><surname>Bobrowski</surname></persName><note type="biography">†Polish Academy of Sciences, Institute of Biochemistry and Biophysics, 02532 Warsaw, Poland.</note><affiliation>†Polish Academy of Sciences, Institute of Biochemistry and Biophysics, 02532 Warsaw, Poland.</affiliation><affiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</affiliation></author><author><persName><forename type="first">S.</forename><surname>Rajadurai</surname></persName><affiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</affiliation></author><author><persName><forename type="first">P. K.</forename><surname>Das</surname></persName><note type="correspondence"><p>Correspondence: ‡To whom correspondence should be addressed.</p></note><affiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</affiliation></author></analytic><monogr><title level="j">Photochemistry and Photobiology</title><idno type="pISSN">0031-8655</idno><idno type="eISSN">1751-1097</idno><idno type="DOI">10.1111/(ISSN)1751-1097</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="1988-01"></date><biblScope unit="volume">47</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="73">73</biblScope><biblScope unit="page" to="83">83</biblScope></imprint></monogr><idno type="istex">51EE7565FB2452DB52515B594927875CD8413D83</idno><idno type="DOI">10.1111/j.1751-1097.1988.tb02697.x</idno><idno type="ArticleID">PHP73</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1988</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Abstract— Upon e‐‐pulse irradiation in nonprotic solvents, all‐trans retinol (ROH) and retinylmethyl ether (ROMe) form transient species (τ= 0.5–7μs, λmax=575–590 nm) identifiable as radical anions. Similar species are also formed upon laser pulse photoexcitation of these retinyl derivatives in the presence of N,N‐dimethylaniline in acetonitrile. In contrast, electron transfer or attachment to all‐trans retinyl acetate (ROAc) and palmitate (ROPa) results in ‘instantaneous’ loss of carboxylate anions from electron adducts giving the retinylmethyl radical (R‐, λmax= 395 nm, τk > 100 μ,s); the radical anions in these cases are too short‐lived to be detected by nanosecond pulse radiolysis. The lifetimes of radical anions of ROH and ROMe are very sensitive to water and alcohols (e.g. kq= 107M‐1 s‐1 with methanol as quencher for ROH‐ in tetrahydrofuran). Based on these findings, the spectral dissimilarity of the one‐electron reduction products from ROH and ROAc in alcohols and aqueous micelles becomes explainable in terms of fast formation of protonated radical anions (RH(OH), τ1/2, > 100 μs, λmax=370–375 nm) in the case of ROH and of retinylmethyl radical via loss of AcO‐ from radical anion in the case of ROAc. In tetrahydrofuran, the complexation of ROH‐ with cations such as Na+ and Bu4N+ affects the relative importance of its major decay modes, namely, protonation and dehydroxylation, the latter process being significantly enhanced by the presence of Na+.</p></abstract></profileDesc><revisionDesc><change when="1988-01">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><original>false</original><mimetype>text/plain</mimetype><extension>txt</extension><uri>https://api.istex.fr/document/51EE7565FB2452DB52515B594927875CD8413D83/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Blackwell Publishing Ltd</publisherName><publisherLoc>Oxford, UK</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1751-1097</doi><issn type="print">0031-8655</issn><issn type="electronic">1751-1097</issn><idGroup><id type="product" value="PHP"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="PHOTOCHEMISTRY PHOTOBIOLOGY">Photochemistry and Photobiology</title></titleGroup></publicationMeta><publicationMeta level="part" position="01001"><doi origin="wiley">10.1111/php.1988.47.issue-1</doi><numberingGroup><numbering type="journalVolume" number="47">47</numbering><numbering type="journalIssue" number="1">1</numbering></numberingGroup><coverDate startDate="1988-01">January 1988</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="0007300" status="forIssue"><doi origin="wiley">10.1111/j.1751-1097.1988.tb02697.x</doi><idGroup><id type="unit" value="PHP73"></id></idGroup><countGroup><count type="pageTotal" number="11"></count></countGroup><titleGroup><title type="tocHeading1">Original Article</title></titleGroup><eventGroup><event type="firstOnline" date="2008-01-02"></event><event type="publishedOnlineFinalForm" date="2008-01-02"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.2 mode:FullText source:HeaderRef result:HeaderRef" date="2010-03-01"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-02-06"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-11-03"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="73">73</numbering><numbering type="pageLast" number="83">83</numbering></numberingGroup><correspondenceTo>‡To whom correspondence should be addressed.</correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:PHP.PHP73.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="referenceTotal" number="34"></count><count type="linksCrossRef" number="7"></count></countGroup><titleGroup><title type="main">TRANSIENT PHENOMENA IN THE PULSE RADIOLYSIS OF RETINYL POLYENES—7. RADICAL ANIONS OF VITAMIN A AND ITS DERIVATIVES</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1" noteRef="#fn1"><personName><givenNames>K.</givenNames><familyName>Bhattacharyya</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a1" noteRef="#fn2"><personName><givenNames>K.</givenNames><familyName>Bobrowski</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a1"><personName><givenNames>S.</givenNames><familyName>Rajadurai</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a1" corresponding="yes"><personName><givenNames>P. K.</givenNames><familyName>Das</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="US"><unparsedAffiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</unparsedAffiliation></affiliation></affiliationGroup><abstractGroup><abstract type="main" xml:lang="en"><p><b>Abstract—</b> Upon e<sup>‐</sup>‐pulse irradiation in nonprotic solvents, all‐<i>trans</i> retinol (ROH) and retinylmethyl ether (ROMe) form transient species (τ= 0.5–7μs, λ<sub>max</sub>=575–590 nm) identifiable as radical anions. Similar species are also formed upon laser pulse photoexcitation of these retinyl derivatives in the presence of N,N‐dimethylaniline in acetonitrile. In contrast, electron transfer or attachment to all‐<i>trans</i> retinyl acetate (ROAc) and palmitate (ROPa) results in ‘instantaneous’ loss of carboxylate anions from electron adducts giving the retinylmethyl radical (R‐, λ<sub>max</sub>= 395 nm, τ<sub>k</sub> > 100 μ,s); the radical anions in these cases are too short‐lived to be detected by nanosecond pulse radiolysis. The lifetimes of radical anions of ROH and ROMe are very sensitive to water and alcohols (e.g. <i>k<sub>q</sub></i>= 10<sup>7</sup><i>M</i><sup>‐1</sup> s<sup>‐1</sup> with methanol as quencher for ROH<sup>‐</sup> in tetrahydrofuran). Based on these findings, the spectral dissimilarity of the one‐electron reduction products from ROH and ROAc in alcohols and aqueous micelles becomes explainable in terms of fast formation of protonated radical anions (RH(OH), τ<sub>1/2</sub>, > 100 μs, λ<sub>max</sub>=370–375 nm) in the case of ROH and of retinylmethyl radical <i>via</i> loss of AcO<sup>‐</sup> from radical anion in the case of ROAc. In tetrahydrofuran, the complexation of ROH<sup>‐</sup> with cations such as Na<sup>+</sup> and Bu<sub>4</sub>N<sup>+</sup> affects the relative importance of its major decay modes, namely, protonation and dehydroxylation, the latter process being significantly enhanced by the presence of Na<sup>+</sup>.</p></abstract></abstractGroup></contentMeta><noteGroup><note xml:id="fn1" numbered="no"><p>*Department of Chemistry, Columbia University, New York, N.Y. 10027.</p></note><note xml:id="fn2" numbered="no"><p>†Polish Academy of Sciences, Institute of Biochemistry and Biophysics, 02532 Warsaw, Poland.</p></note></noteGroup></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>TRANSIENT PHENOMENA IN THE PULSE RADIOLYSIS OF RETINYL POLYENES—7. RADICAL ANIONS OF VITAMIN A AND ITS DERIVATIVES</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>TRANSIENT PHENOMENA IN THE PULSE RADIOLYSIS OF RETINYL POLYENES—7. RADICAL ANIONS OF VITAMIN A AND ITS DERIVATIVES</title></titleInfo><name type="personal"><namePart type="given">K.</namePart><namePart type="family">Bhattacharyya</namePart><affiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</affiliation><description>*Department of Chemistry, Columbia University, New York, N.Y. 10027.</description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">K.</namePart><namePart type="family">Bobrowski</namePart><affiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</affiliation><description>†Polish Academy of Sciences, Institute of Biochemistry and Biophysics, 02532 Warsaw, Poland.</description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S.</namePart><namePart type="family">Rajadurai</namePart><affiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">P. K.</namePart><namePart type="family">Das</namePart><affiliation>Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA</affiliation><description>Correspondence: ‡To whom correspondence should be addressed.</description><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">1988-01</dateIssued><copyrightDate encoding="w3cdtf">1988</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="references">34</extent></physicalDescription><abstract lang="en">Abstract— Upon e‐‐pulse irradiation in nonprotic solvents, all‐trans retinol (ROH) and retinylmethyl ether (ROMe) form transient species (τ= 0.5–7μs, λmax=575–590 nm) identifiable as radical anions. Similar species are also formed upon laser pulse photoexcitation of these retinyl derivatives in the presence of N,N‐dimethylaniline in acetonitrile. In contrast, electron transfer or attachment to all‐trans retinyl acetate (ROAc) and palmitate (ROPa) results in ‘instantaneous’ loss of carboxylate anions from electron adducts giving the retinylmethyl radical (R‐, λmax= 395 nm, τk > 100 μ,s); the radical anions in these cases are too short‐lived to be detected by nanosecond pulse radiolysis. The lifetimes of radical anions of ROH and ROMe are very sensitive to water and alcohols (e.g. kq= 107M‐1 s‐1 with methanol as quencher for ROH‐ in tetrahydrofuran). Based on these findings, the spectral dissimilarity of the one‐electron reduction products from ROH and ROAc in alcohols and aqueous micelles becomes explainable in terms of fast formation of protonated radical anions (RH(OH), τ1/2, > 100 μs, λmax=370–375 nm) in the case of ROH and of retinylmethyl radical via loss of AcO‐ from radical anion in the case of ROAc. In tetrahydrofuran, the complexation of ROH‐ with cations such as Na+ and Bu4N+ affects the relative importance of its major decay modes, namely, protonation and dehydroxylation, the latter process being significantly enhanced by the presence of Na+.</abstract><relatedItem type="host"><titleInfo><title>Photochemistry and Photobiology</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">0031-8655</identifier><identifier type="eISSN">1751-1097</identifier><identifier type="DOI">10.1111/(ISSN)1751-1097</identifier><identifier type="PublisherID">PHP</identifier><part><date>1988</date><detail type="volume"><caption>vol.</caption><number>47</number></detail><detail type="issue"><caption>no.</caption><number>1</number></detail><extent unit="pages"><start>73</start><end>83</end><total>11</total></extent></part></relatedItem><identifier type="istex">51EE7565FB2452DB52515B594927875CD8413D83</identifier><identifier type="DOI">10.1111/j.1751-1097.1988.tb02697.x</identifier><identifier type="ArticleID">PHP73</identifier><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Publishing Ltd</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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