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Non-fullerene organic solar cells have received increasing attentions in these years, and great progresses have been made since 2013. Among them, aromatic di-amide/imide-containing frameworks have shown promising applications. The outstanding properties of them are highly associated with their unique electronic and structural features, such as strong electron-withdrawing nature, broad absorption in...
New types of polyfluorene derivatives containing Ir complexes and carbazole/1,3,4-oxadiazole dendrons on the side chain have been synthesized through “click chemistry” efficiently. By introducing propargyl group into the binaphthyl unit on the polyfluorene backbone, different Ir complex- and functional dendron-containing azides could be quantitatively clicked into the main chain through the Cu(I)-catalyzed...
Xiashu loess strata are widely distributed along the middle-lower reaches of the Yangtze River in East China with the stratum near Nanjing, Jiangsu Province being typical. The cyclic variability of the stratum was investigated through comparison of geological features, chemical composition, and swelling-shrinkage properties between the loess and the paleosol layers. Based on the investigation of such...
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