105985-10-2Relevant articles and documents
Tetra (4-propargyloxyphenoxy)phthalocyanines: Facile synthesis, fluorescence and thermal properties
Mwanza, Daniel,Khene, Samson,Mashazi, Philani
, p. 263 - 274 (2017)
The facile method of synthesizing of tetra (4-propargyloxyphenoxy) phthalocyanines with the terminal alkynyl (C[tbnd]C) group is reported. The synthesized phthalocyanines are the unmetallated (H2TPrOPhOPc) and the metallated complexes of cobalt (CoTPrOPhOPc) and manganese (Mn(OAc)TPrOPhOPc). The fluorescence properties of H2TPrOPhOPc and Mn(OAc)TPrOPhOPc were investigated. The fluorescence lifetimes (τF) for the H2TPrOPhOPc and Mn(OAc)TPrOPhOPc, evaluated using time correlated single photon counting (TCSPC) technique, were found to be 5.79?ns and 5.50?ns, respectively. The fluorescence quantum yields (ΦF) were also calculated using a comparative method and were 0.12 for H2TPrOPhOPc and 0.16 for Mn(OAc)TPrOPhOPc. The CoTPrOPhOPc complex did not show fluorescent properties and this was attributed to the quenching of the excited state by the half-filled metal d-orbitals which are lying below the highest occupied molecular orbitals (HOMO) of the phthalocyanine ring. The CoTPrOPhOPc and Mn(OAc)TPrOPhOPc exhibited excellent thermal stability, which was better than H2TPrOPhOPc, due to the presence of the cobalt and manganese metal ions at the centre of the phthalocyanine ring. Density functional theory (DFT) calculations predicted the HOMO?LUMO (lowest unoccupied molecular orbitals) gap for H2TPrOPhOPc, CoTPrOPhOPc and Mn(OAc)TPrOPhOPc to be 2.06?eV, 2.15?eV and 1.75?eV, respectively.
Tetra-substituted phenoxyl zinc phthalocyanine and preparation method thereof
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Paragraph 0027; 0029; 0031, (2018/02/04)
The invention provides tetra-substituted phenoxyl zinc phthalocyanine which has a chemical structural formula as shown in the specification. Novel tetra-substituted phenoxyl zinc phthalocyanine which is not reported can be synthesized by introducing phenoxyl with an alcoxyl long chain to the periphery of zinc phthalocyanine macrocycle for the first time. Compared with short chain phenoxyl in previous reports, an octyloxy chain containing eight carbon atoms is introduced into the tetra-substituted phenoxyl zinc phthalocyanine, the solubility of the compound in an organic solvent can be greatly improved due to introduction of the flexible chain octyloxy, and the tetra-substituted phenoxyl zinc phthalocyanine has the advantages of mild reaction conditions, safe experiment operation, simple post-treatment, high target product yield and the like.