1 Ocak 2011 Dergi makalesi Açık Erişim

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

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  <dc:creator>Dogruyol, Sevnur Keskin</dc:creator>
  <dc:creator>Dogruyol, Zekeriya</dc:creator>
  <dc:creator>Arsu, Nergis</dc:creator>
  <dc:date>2011-01-01</dc:date>
  <dc:description>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 -&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</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/19215</dc:identifier>
  <dc:identifier>oai:zenodo.org:19215</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 49(18) 4037-4043</dc:source>
  <dc:title>A Thioxanthone-Based Visible Photoinitiator</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>