Main chain polymeric metal complexes based on linkage fluorenevinylene or phenylenevinylene with thienyl(8‐hydro xyquinoline)–cadmium (II) complexes as dye sensitizer for dye‐sensitized solar cells

Abstract

Dye-sensitized solar cells (DSSCs) have attracted interest from chemists in recent years because of their unique advantages: low cost, simple preparation technologies, and high efficiency. Three main chain polymeric metal complexes F, P1, and P2 connected with thienyl(8-hydroxyquinoline)-Cadmium (II) complexes have been synthesized by Heck coupling and characterized by Gel Permeation Chromatography, Fourier transform infrared, 1H NMR, thermogravimetric analysis, TGA, UV-vis, cyclic voltammetry, photoluminescence (PL) emission spectra, and the application of dye sensitizers in DSSCs has been studied. The DSSCs exhibited good performance with a power conversion efficiency of up to 1.77%, under simulated air mass 1.5 G solar irradiation. They possess good stabilities, indicating the polymeric metal complexes are suitable for the fabrication processes of optoelectronic devices.

Synthesis and Reactions of Halo-substituted Alkylthiophenes. A Review

“…86 Scheme 46 illustrates the different locations of the methyl group on the thiophene ring led to the differences in the yields obtained from various methyl-substituted bromomethylthiophenes. Thus reaction of 123 with N-methyl-aniline gave a 52% yield of the aminothiophene 124 while only a 6% yield of 125 was obtained from the same reaction with 2-bromo-3-methylthiophene (7). In this case, the major product isolated was the amidine PhN D CHN(Me)Ph, presumably arising from a metal-mediated disproportionation of the unstable imine CH 2 D NHPh resulting from a b-hydride elimination of the palladium N-methylaniline…”

“…(CHCl 3 ), 6 tetrahydrofuran (THF), 7 or N,N-dimethylformamide (DMF), 8 are the most commonly used conditions (Scheme 3). High yields (70-98%) are generally obtained and depending on the reaction conditions, the mono-or dibromo compounds can be obtained.…”