Synthesis and Characterization of Metal Complexes

Chemicals were purchased from commercial sources and used without further purification, unless otherwise noted. Tetraethyl orthosilicate, cetyltrimethylammonium bromide, sodium aluminate, sodium hydroxide, an aqueous solution of hydrogen peroxide (30 wt%) and perchloric acid (60%) were purchased from Wako Pure Chemical Industries. Tris(2-pyridylmethyl)amine and oxo[5,10,15,20-tetra(4-pyridyl)porphyrinato]titanium(IV) (Ti–TPyP) were supplied from Tokyo Chemical Industry. Copper(II) perchlorate hexahydrate were delivered by Sigma-Aldrich. Acetone and acetonitrile were purchased from Nacalai tesque as a spectral grade and used as received. Ultra-Pure water was provided by a water purification system, Millipore Direct-Q3 UV, where the electronic conductance was 18.2 MΩ cm. Benzene was purchased from Wako Pure Chemical Industries and purified by washing with sulphuric acid and water and following distillation. [Cu(tmpa)(CH₃CN)](ClO₄)₂, [Cu(tepa)(ClO₄)]ClO₄, [Cu^II₂(N5)(H₂O)₂](NO₃)₄ and Al-MCM-41 were synthesised by literature methods.^{53a (link),58 (link)–61}