Jingjing Xu, Bolong Zhang, Marina Jansen, Lars Goerigk, Wallace W. H. Wong, Dr. Chris Ritchie, “Highly Fluorescent Pyridinium Betaines for Light Harvesting”, Angew. Chem. Int. Ed, published online 21 August 2017 (early view).

Abstract
We report the findings of our experimental and theoretical investigations into the properties of pyridinium enolates and their potential utility in light-harvesting applications, such as in luminescent solar concentrators (LSCs). We present the synthesis, structures, photophysical characterization, and wavefunction-based quantum-chemical studies of five cyclobetaines. The performance of an LSC device incorporating one of these cyclobetaines is shown to be comparable to state-of-the-art devices.

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Fei Zheng, Xiao-Yu Yang, Peng-Qing Bi, Meng-Si Niu, Cheng-Kun Lv, Lin Feng, Wei Qin, Yu-Zhu Wang, Xiao-Tao Hao, Kenneth P. Ghiggino, "Poly(3-hexylthiophene) coated graphene oxide for improved performance of bulk heterojunction polymer solar cells", Organic Electronics vol 44, May 2017, pp 149–158

Abstract
An effective method for preparing poly(3-hexylthiophene) (P3HT) coated graphene oxide (GO), (P-GO), based on an ethanol mediated mixing and solvent evaporation method is described. P-GO exhibits good dispersibility in the non-polar solvent o-dichlorobenzene (DCB) allowing the preparation of polymer blend composites. P-GO was doped into P3HT: PCBM blends by solution mixing and shown to facilitate phase separation of P3HT and PCBM in P3HT: PCBM blend films to achieve a more optimum morphology for polymer photovoltaic cells. Bulk heterojunction P3HT: PCBM solar cells exhibit ∼18% power conversion efficiency enhancement in the presence of P-GO.

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