Department of Chemistry, Tokyo University of Science, Shinjuku-ku, Tokyo, Japan E-mail : akitsu@rs.kagu.tus.ac.jp Department of Chemistry, Aligarh Muslim University, Aligarh-202 002, Uttar Pradesh, India Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Kanagawa, Japan Manuscript received 03 August 2017, accepted 02 September 2017 Five salen type copper(II) complexes [CuL1 ] (1), [CuL2 ] (2), [CuL3 ] (3), [CuL4 ] (4) and [CuL5 ] (5) and their composites with TiO2 , [CuL1 -TiO2 ] (6), [CuL2 -TiO2 ] (7), [CuL3 -TiO2 ] (8), [CuL4 -TiO2 ] (9) and [CuL5 - TiO2 ] (10) were synthesized and characterized by employing elemental analysis, infra-red (IR) and TD-DFT calculations. The solid state structures of (4) and (5) were confirmed using X-ray diffraction on single crystals. The structural analyses of composites (6-10) along with TiO2 were performed through X-ray photon spectroscopy (XPS) and powder X-ray diffraction (P-XRD). X-Ray analysis demonstrated that the Cu2+ ion in complex (4) acquire distorted square planer geometry and occupy inner chamber (N2O2 ) of the Schiff base ligand whereas in complex (5) two mononuclear units are connected by phenoxo bridge to form a dimer in which Cu2+ ions exhibits a five-coordinated square pyramidal coordination geometry. The methoxy groups are free in both complexes. The XPS measurements on composite (9) shows that change of dipole moment due to chemical adsorption, which affect electronic state of TiO2 . The measurement results of P-XRD have been analyzed by employing Rietveld analysis method and a change in volume of TiO2 for composite (9) is observed.