Novel Metal-Organic Polymer [Ruthenium Bis(II) (2,2′–Bipyridyl 4,4′− Dicarboxylic Acid) (N-Methyl morpholine)]n (BF4)2n for Dye-Sensitized Solar Cell Application

Herein, we have given the synthesis of a novel Ruthenium based metal-organic polymer dye [Ru(L1)2(L2)]n(BF4)2n, where L1 = 2,2′bipyridyl 4,4′-dicarboxylic acid, L2 = N-Methyl Morpholine, coded as RuMOP-NMM1, centered on long-drawn-out organic base (N-Methyl Morpholine) as linker unit and its photophysical and electrochemical properties. The material was characterized by UV–Vis absorption, Fluorescence, Infrared (FT-IR), Raman and Nuclear Magnetic Resonance (NMR) spectroscopy, Elemental Analyser (CHNS/O), Thermo Gravimetric/Differential Scanning calorimetry (TG/DSC) and Cyclic Voltametry (CV). The polynuclear complex displays an absorption band on longer wavelengths with high molar extinction coefficient. The metal-mediated supramolecular polymer complex, exhibit a strong luminescence emission. Henceforth, these metal-organic polymer (RuMOP-NMM1) have better thermal and chemical stability than the mononuclear complexes. These photoluminescence and electrochemical characterization results strongly suggest that the synthesized metal-organic polymer is kinetically and energetically suitable to aid as sensitizers in energy-relevant applications mainly in dye-sensitized solar cell (DSSC).