Applications of lead phthalocyanines embedded in electrospun fibers for the photoinactivation of Escherichia coli in water
作者： Olawale L. Osifeko , Tebello Nyokong
DOI: 10.1016/J.DYEPIG.2014.05.010
关键词:
摘要: Abstract Lead (II) pyridyloxyphthalocyanine (PbTpyPc) and its quaternized form (PbTepyPc) were synthesized the photophysical behavior examined. Low fluorescence quantum yields ( Φ F ) of 0.01 0.02 observed for PbTepyPc PbTpyPc, respectively. The singlet oxygen Δ 0.60 0.68, respectively using DPBF as a quencher in DMF. Singlet production embedded sensitizers electrospun fiber quantified ADMA found to be = 0.41 = 0.21 Photodynamic inactivation Escherichia coli E. coli with photosensitizer at 5 μM, totally inactivated (with log CFU = 10 decrease). Only 0.4 log CFU decrease was obtained PbTpyPc. non-quaternized less active on gram negative bacteria but effective towards .
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