Sebastian Raja

Influence of triazole dendritic additives in electrolytes on dye-sensitized solar cell (DSSC) performance

Novel triazole dendritic molecules bearing dimethyl isophthalate surface group are synthesized. The enhancement of triazole and carboxylate groups in the dendritic structures significantly alter the absorption, electrochemical and DSSCs behaviors. With dendritic additive DSSCs cell exhibited higher Voc values and power conversion efficiency (η) in I−/I3−redox couple under simulated AM 1.5 at 40 mW cm−2.

Synthesis of triazole dendrimers with a dimethyl isophthalate surface group and their application to dye-sensitized solar cells

Dendritic architectures with 1,2,3-triazole as the building unit and dimethyl isophthalate as the surface group are synthesized through a convergent approach employing click chemistry and tested for their application in dye-sensitized solar cells (DSSCs). The studies revealed that the presence of triazole and isophthalate groups in dendritic structures significantly altered the absorption, electrochemical and DSSC behaviors. In DSSCs, the dendritic structures exhibited higher Voc values and higher power conversion efficiency (η) in the I−/I3− redox couple under simulated conditions at 40 mW cm−2.

Synthesis and Characterization of Some Novel Dendritic Architectures Bearing Chalcone at the Periphery Through Click Approach

Abstract Synthesis of 1,2,3-triazole-based dendritic architectures bearing a chalcone unit at the surface group has been achieved through a click reaction by the convergent synthetic strategy, in which tri- and tetra-azide were used as core units.

Synthesis of chiral core based triazole dendrimers with m-terphenyl surface unit and their antibacterial studies

S-BINOL based chiral dendrimers with m-terphenyl at the surface and triazole as the bridging unit have been synthesized by a convergent synthetic strategy through the ‘click’ chemistry approach. The resazurin reduction assay method shows that all the dendrimers exhibit antibacterial activity against Shigella dysenteriae, Staphylococcus aureus and Serratia marcescen. Dendrimer 2 shows better inhibitory activity than dendrimers 1 and 3 towards Shigella dysenteriae and Staphylococcus aureus and the antibacterial activity of dendrimer 2 is comparable to that of the standard viz., streptomycin. Further molecular docking studies also supported our results.

(E)-1-[4-(Prop-2-yn-1-yl­oxy)phen­yl]-3-(3,4,5-trimeth­oxy­phen­yl)prop-2-en-1-one

The molecule of the title chalcone derivative, C21H20O5, consists of two substituted aromatic rings bridged by a prop-2-en-1-one group. The dihedral angle between the two benzene rings is 28.7 (7)°. In the crystal, molecules are linked into C(10) chains running along the a axis by intermolecular C—H⋯O hydrogen bonds, and the chains are cross-linked via C—H⋯π interactions.