1 Ocak 2011 Dergi makalesi Açık Erişim

Dogruyol, Sevnur Keskin; Dogruyol, Zekeriya; Arsu, Nergis

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/19215</identifier>
  <creators>
    <creator>
      <creatorName>Dogruyol, Sevnur Keskin</creatorName>
      <givenName>Sevnur Keskin</givenName>
      <familyName>Dogruyol</familyName>
      <affiliation>Yildiz Tech Univ, Dept Chem, TR-34220 Istanbul, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Dogruyol, Zekeriya</creatorName>
      <givenName>Zekeriya</givenName>
      <familyName>Dogruyol</familyName>
      <affiliation>Yildiz Tech Univ, Dept Phys, TR-34220 Istanbul, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Arsu, Nergis</creatorName>
      <givenName>Nergis</givenName>
      <familyName>Arsu</familyName>
      <affiliation>Yildiz Tech Univ, Dept Chem, TR-34220 Istanbul, Turkey</affiliation>
    </creator>
  </creators>
  <titles>
    <title>A Thioxanthone-Based Visible Photoinitiator</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2011</publicationYear>
  <dates>
    <date dateType="Issued">2011-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/19215</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1002/pola.24846</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">Thioxanthone-based 9-(2-Morpholine-4yl-acetyl)-5-thia-napthasen-12-one (TX-MPM) was synthesized and characterized as a one-component novel visible photoinitiator. Its capability to act as an initiator for the polymerization of methyl methacrylate (MMA) was examined in photoreactor and also daylight. Photophysical properties: fluorescence and phosphorescence emission spectra and fluorescence quantum yield of TX-MPM (Phi(f) = 0.29) were determined. The phosphorescence lifetime was found 131 ms for TX-MPM and 110 ms for initiator-attached polymer (PMMA) at 77 K, indicated a pi -&amp;gt;pi* nature of the lowest triplet state. A model compound, morpholino acetonapthone was used as quencher for the triplet states of TX-MPM and the quenching rate constant was determined (k(q) = 1.26 x 10(9) M(-1)s(-1)). According to laser flash photolysis studies, intermolecular hydrogen abstraction process was more dominant path to the formation of the initiating radicals. (C) 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 4037-4043, 2011</description>
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