DFT/TDDFT approach: an incredible success story in prediction of organic materials properties for photovoltaic application

In the quest to improve the performance of organic solar cells (OSCs), the distinction of the critical factors limiting their power conversion efficiency (PCE) with a view to rationalizing the relationship between the structures of the active layers, their morphology, and the electronic processes taking place at their interface is required. In this review, we give an overview of the role of computational approaches based on density functional theory (DFT) in describing and predicting the structure of OSC active materials at molecular level and characterizing their various properties. We first discuss the key success of DFT calculations in establishing and understanding the relationship between the structure and the optoelectronics properties of some organic compounds. A second section deals with the power of DFT calculations in the molecular design of potential donor materials for photovoltaic applications which is beneficial for chemists to have an estimate of the photophysical properties of the target before carrying out a multistep synthesis

DFT modeling of conjugated copolymers photophysical properties: Towards organic solar cell application

International audienc

Theoretical investigation of oligomer structure and optoelectronic properties for [4-(methoxyphenyl)acetonitrile]n (n=1-5)

International audienc

Involvement of Testicular DAAM1 Expression in Zinc Protection Against Cadmium-induced Male Rat Reproductive Toxicity.

In order to verify the effects of exposure to Cd and Zn on testicular DAAM1 gene and protein expression and also to ascertain their involvement in the protective role of Zn in prevent the testicular toxicity Cd-induced in male offspring rats at adult age after gestational and lactational exposure, male offspring rats, from mothers receiving either tap water, Cd, Zn or Cd+Zn during gestation and lactation periods, were scarified on postnatal days (PND) 70. The reproductive organ (testis, epididymis and vesicle seminal) were collected, weighed and analysed. The results showed that exposure to Cd in utero and through lactation decreased the relative reproductive organ weight, altered the testicular histology at the interstitial and tubular levels, and causing a significant reduction in the daily sperm production (DSP) per testis and per gram of testis, and other then altering the epididymal sperm quality. Furthemore, both mRNA and protein expression of rat testicular DAAM1 were also inhibited in Cd-treated group. Zn supply has completely corrected the most of these toxic effects. Our results imply that Zn could prevent Cd-induced testicular toxicity and sperm quality alteration in adult male rat after gestational and lactational exposure, probably via the restoration of the testicular DAAM1 expression inhibited by Cd