Abstract
A novel tetrasubstituted metal-free phthalocyanine bearing phthalonitrile groups on the peripheral positions was synthesized accidentally by the cyclotetramerization reaction of the 4,4’-(1,3-phenylenebis(oxy))diphthalonitrile. For photodynamic therapy (PDT) application was described photophysical properties including fluorescence quantum yield (ΦF), fluorescence lifetime (τF), triplet state lifetime (τT) and triplet quantum yield (ΦT) and photochemical properties including singlet oxygen quantum yield (Φf) and photodegradation quantum yield (Φd) as well as magnetic circular dichroism (MCD) properties. The ΦT of phthalocyanine compound value was found 0.81. The obtained lifetime (τT) was 40 μs for metal-free Pc.
Keywords
Phthalocyanine
Quantum yield
Phthalonitrile
Chemistry
Singlet oxygen
Photochemistry
Fluorescence
Yield (engineering)
Singlet state
Triplet state
Photodegradation
Metal
Quenching (fluorescence)
Oxygen
Excited state
Molecule
Photocatalysis
Materials science
Atomic physics
Organic chemistry
Catalysis
Optics
Subject Areas
Porphyrin and Phthalocyanine Chemistry
·Materials Chemistry ·Physical Sciences
Photochromic and Fluorescence Chemistry
·Materials Chemistry ·Physical Sciences
Photodynamic Therapy Research Studies
·Pulmonary and Respiratory Medicine ·Health Sciences
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