1 Ocak 2011 Dergi makalesi Açık Erişim

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

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        "affiliation": "Yildiz Tech Univ, Dept Chem, TR-34220 Istanbul, Turkey", 
        "name": "Dogruyol, Sevnur Keskin"
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      {
        "affiliation": "Yildiz Tech Univ, Dept Phys, TR-34220 Istanbul, Turkey", 
        "name": "Dogruyol, Zekeriya"
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      {
        "affiliation": "Yildiz Tech Univ, Dept Chem, TR-34220 Istanbul, Turkey", 
        "name": "Arsu, Nergis"
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    "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 ->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", 
    "doi": "10.1002/pola.24846", 
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      "issue": "18", 
      "pages": "4037-4043", 
      "title": "JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY", 
      "volume": "49"
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    "publication_date": "2011-01-01", 
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    "title": "A Thioxanthone-Based Visible Photoinitiator"
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