A novel [4 + 3] interpenetrated net containing 7-fold interlocking pseudo-helical chains and exceptional catenane-like motifs

2015 ◽  
Vol 44 (6) ◽  
pp. 2844-2851 ◽  
Author(s):  
Bai-Qiao Song ◽  
Chao Qin ◽  
Yu-Teng Zhang ◽  
Li-Tao An ◽  
Kui-Zhan Shao ◽  
...  

The first example of a [4 + 3] 7-fold interpenetrating network was prepared, showing 7-fold interlocking pseudo-helical chains and a unique catenane-like motif with Hopf links.

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Lijiao Ma ◽  
Shaoqing Zhang ◽  
Jincheng Zhu ◽  
Jingwen Wang ◽  
Junzhen Ren ◽  
...  

AbstractNon-fullerene acceptors (NFAs) based on non-fused conjugated structures have more potential to realize low-cost organic photovoltaic (OPV) cells. However, their power conversion efficiencies (PCEs) are much lower than those of the fused-ring NFAs. Herein, a new bithiophene-based non-fused core (TT-Pi) featuring good planarity as well as large steric hindrance was designed, based on which a completely non-fused NFA, A4T-16, was developed. The single-crystal result of A4T-16 reveals that a three-dimensional interpenetrating network can be formed due to the compact π–π stacking between the adjacent end-capping groups. A high PCE of 15.2% is achieved based on PBDB-TF:A4T-16, which is the highest value for the cells based on the non-fused NFAs. Notably, the device retains ~84% of its initial PCE after 1300 h under the simulated AM 1.5 G illumination (100 mW cm−2). Overall, this work provides insight into molecule design of the non-fused NFAs from the aspect of molecular geometry control.


Desalination ◽  
2014 ◽  
Vol 347 ◽  
pp. 207-214 ◽  
Author(s):  
En L. Tian ◽  
Huan. Zhou ◽  
Yi W. Ren ◽  
Zakaria.a. mirza ◽  
Xing Z. Wang ◽  
...  

2015 ◽  
Vol 72 ◽  
pp. 717-725 ◽  
Author(s):  
Yemin Zhang ◽  
Zhiping Fan ◽  
Chen Xu ◽  
Shuo Fang ◽  
Xiaojiu Liu ◽  
...  

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