Title of article :
Spectral, electrochemical, luminescence, and dye-sensitized solar cell studies of mono and d-f hetero binuclear cryptates
Author/Authors :
VIJAYARAJ, Arunachalam University of Madras,Guindy Maraimalai Campus - School of Chemical Sciences - Department of Inorganic Chemistry, India , PRABU, Raju University of Madras,Guindy Maraimalai Campus - School of Chemical Sciences - Department of Inorganic Chemistry, India , SURESH, Ranganathan University of Madras,Guindy Maraimalai Campus - School of Chemical Sciences - Department of Inorganic Chemistry, India , MANOHARAN, Subbaiah National Institute of Technology - Department of Chemistry, India , ANANDAN, Sambandan National Institute of Technology - Department of Chemistry, India , NARAYANAN, Vengidusamy University of Madras,Guindy Maraimalai Campus - School of Chemical Sciences - Department of Inorganic Chemistry, India
Abstract :
Mono and hetero binuclear cryptates, [Gd(III)ML]^+ [M = VO(IV), Co(II), Ni(II), Cu(II)], were synthesized by a 2-step method. The ligand L represents the deprotonated anionic cryptate obtained by the 2+3 condensation of tris-(2-aminoethyl)amine with 2,6-diformyl-4-nitrophenol. The complexes were characterized by elemental analysis, spectral, magnetic, and electrochemical studies. Fluorescence of Gd(III) ion in the cavity was quenched by the encapsulated Cu(II) and Ni(II) ions. [GdCoL(NO_3)]^+ cryptate had a high lifetime value compared to other cryptates. The cyclic voltammogram showed that the reduction potential values of [Gd(M)L] M = VO(IV), Co(II), Ni(II), and Cu(II) complexes were in the following order: Cu(II) Ni(II) Co(II) VO(IV). The efficiency (eta) of the cryptate based dye-sensitized solar cell (DSSC) increases in the following order: [GdVOL(NO_3)]^+ [GdCoL(NO_3)]^+ [GdCuL(NO_3)]^+ [GdHL] [GdNiL(NO_3)]^+.
Keywords :
Gadolinium , binuclear complexes , electrochemistry , lifetime decay , DSSC
Journal title :
Turkish Journal of Chemistry
Journal title :
Turkish Journal of Chemistry
