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The microstructure of the active layer of the heterojunction organic solar cells has an important effect on the performance of the device. To date, a variety of optimization methods can control the microstructure of the active layer, solvent additive method is simple convenient and can greatly enhance photovoltaic performance which is a significant morphological control method. However, the mechanism of action of ...

For the development of new optoelectronic materials, alternating conjugated electron donor-acceptor (D-A) polymers have been intensively studied in recent years. Normally, the molecular design strategy is to devise new electron-rich and -deficient frameworks. Zhang et al. (Institute of Chemistry, Chinese Academy of Sciences) have recently disclosed a new bis-amide acceptor (BPD), and successfully utilized BPD to s...

Zhang et al. (Institute of Chemistry, Chinese Academy of Sciences) mainly focused on the “structure-property” relationships of conjugated polymers. Recently, they introduced three novel DPP-based polymers through fine-tuning the structures of conjugated backbone. The results of calculations and UV-vis spectra demonstrated that the structures of polymers have remarkable influences on energy levels, molecular conf...

Heme iron and non-heme iron are two forms of iron resources in diet,and approximately 70%of the total iron exists in the form of heme iron. Moreover, supplementation of heme iron is the first choice to treat iron deficiency anemia. Early in 1955, heme-derived iron was first reported to be absorbed by enterocytes. However, it is still unknown clearly the mechanism of heme iron absorption, which is mainly due to th...

In natural photosynthesis, water oxidation reaction is catalyzed by μ-oxido-Mn4Ca cluster in photosystem II (PSII). It has been reported that the active site for natural PSII is CaMn4O5 cluster with three Mn and one Ca forming a distorted CaMn3O4 cubane and the fourth Mn ion bonding to this cubane by additional μ-oxido ligand. In order to reveal the mechanism of oxygen formation, synthesis of CaMn4O5 cluster mim...

Recently, a team consists of Dr. Sajid Butt of Prof. Ce-Wen Nan’s group from Tsinghua University and Dr. Wei Xu from Institute of High Energy Physics of CAS and their coworkers, has developed a superionic conductor Cu2Se based thermoelectrics embedded with Cu2Te nanoclusters. The Figure of merit was optimized to record high value ~1.9 at 873K. To unveil the origin of the enhanced thermoelectricity they have emplo...
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