Journal
JOURNAL OF LUMINESCENCE
Volume 136, Issue -, Pages 389-394Publisher
ELSEVIER
DOI: 10.1016/j.jlumin.2012.12.025
Keywords
Phthalocyanine; Thioxanthone; Photopolymerization; Type II photoinitiator; Fluorescence
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Funding
- Research Fund of the Yildiz Technical University
- State Planning Institute (DPT)
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The novel 4-(9-oxo-9 H-thioxanthen-2yloxy) phthalonitrile (TX-Pht) and its peripherally tetra substituted zinc phthalocyanine complex (TX-ZnPc) have been prepared and characterized by spectroscopic and elemental analysis techniques. Photoinitiated polymerization of methyl methacrylate (MMA) with TX-ZnPc has been investigated in the presence and absence of a co-initiator. Fluorescence and phosphorescence measurements have been also performed to determine the photophysical properties. Low fluorescence quantum yield (Phi(F)=0.08) compared to the unsubstituted ZnPc has been found. This allows initiator to undergo intersystem crossing into the triplet state and the lowest triplet state possesses pi-pi* configuration. (C) 2012 Elsevier B.V. All rights reserved.
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