Abstract
Ground state geometries have been computed using Density Functional Theory (DFT) at B3LYP/6-31G(d,p) level of theory. The excitation energies and spectroscopic parameters have been computed using Long range Corrected (LC) hybrid functional by Time Dependent Density Functional Theory (TDDFT) with LC-BLYP level of theory. The Polarizable Continuum Model (PCM) has been used for evaluating bulk solvent effects at all stages. The efficient materials have been predicted and electron injection (Delta G(inject)), electron coupling constant ( |V-RP| ) and Light Harvesting Efficiency (LHE) has been discussed. By elongating the bridge all these three parameters Delta G(inject), |V-RP| and LHE enhanced which revealed that new designed sensitizers would be efficient.