Tetra-armed conjugated microporous polymers for gas adsorption and photocatalytic hydrogen evolution

2017 ◽  
Vol 60 (8) ◽  
pp. 1075-1083 ◽  
Author(s):  
Yunfeng Xu ◽  
Chong Zhang ◽  
Pan Mu ◽  
Na Mao ◽  
Xue Wang ◽  
...  
Author(s):  
Mohamed Gamal Mohamed ◽  
Mohamed Hammad Elsayed ◽  
Ahmed M. Elewa ◽  
Ahmed F. M. EL-Mahdy ◽  
Cheng-Han Yang ◽  
...  

Pyrene based conjugated microporous polymers (CMPs) as photocatalysts with promising H2 production efficiencies and very high stability.


2020 ◽  
Vol 8 (5) ◽  
pp. 2404-2411 ◽  
Author(s):  
Xiaomin Gao ◽  
Chang Shu ◽  
Chong Zhang ◽  
Wenyan Ma ◽  
Shi-Bin Ren ◽  
...  

The influence of substituent groups on the photocatalytic activity of conjugated microporous polymers was investigated, and a high photocatalytic hydrogen evolution rate of 18.93 mmol h−1 g−1 was achieved by PyDF with fluorine atoms.


Author(s):  
Reiner Sebastian Sprick ◽  
Yang Bai ◽  
Catherine M. Aitchison ◽  
Duncan J. Woods ◽  
Andrew I. Cooper

<p>Three series of conjugated microporous polymers (CMPs) were studied as photocatalysts for producing hydrogen from water using a sacrificial hole-scavenger. In all cases, dibenzo[<i>b</i>,<i>d</i>]thiophene sulfone polymers outperformed their fluorene analogs. A porous network, S-CMP3, showed the highest hydrogen evolution rate of 6076 µmol h<sup>-1</sup> g<sup>-1</sup> (λ > 295 nm) and 3106 µmol h<sup>-1</sup> g<sup>-1</sup> (λ > 420 nm), with an external quantum efficiency of 13.2% at 420 nm. S-CMP3 outperforms its linear structural analog, P35, while in other cases, non-porous linear polymers are superior to equivalent porous networks. This suggests that microporosity can be beneficial for sacrificial photocatalytic hydrogen evolution, but not for all monomer combinations.</p>


2016 ◽  
Vol 52 (65) ◽  
pp. 10008-10011 ◽  
Author(s):  
Reiner Sebastian Sprick ◽  
Baltasar Bonillo ◽  
Michael Sachs ◽  
Rob Clowes ◽  
James R. Durrant ◽  
...  

Conjugated microporous polymers (CMPs) have been used as photocatalysts for hydrogen production from water in the presence of a sacrificial electron donor.


2017 ◽  
Vol 218 (14) ◽  
pp. 1700049 ◽  
Author(s):  
Yunfeng Xu ◽  
Na Mao ◽  
Shi Feng ◽  
Chong Zhang ◽  
Feng Wang ◽  
...  

2019 ◽  
Vol 25 (15) ◽  
pp. 3867-3874 ◽  
Author(s):  
Venkata Suresh Mothika ◽  
Papri Sutar ◽  
Parul Verma ◽  
Shubhajit Das ◽  
Swapan K. Pati ◽  
...  

2021 ◽  
Author(s):  
Zhuangfei Qian ◽  
Yajie Yan ◽  
Ziqi Liang ◽  
Xiaodong Zhuang ◽  
Kai A. I. Zhang

The fast recombination of photogenerated electron-hole pairs after charge separation is one of the main limiting factors for achieving high efficiency of organic semiconductor photocatalysts. Herein, we report a conjugated...


Author(s):  
Reiner Sebastian Sprick ◽  
Yang Bai ◽  
Catherine M. Aitchison ◽  
Duncan J. Woods ◽  
Andrew I. Cooper

<p>Three series of conjugated microporous polymers (CMPs) were studied as photocatalysts for producing hydrogen from water using a sacrificial hole-scavenger. In all cases, dibenzo[<i>b</i>,<i>d</i>]thiophene sulfone polymers outperformed their fluorene analogs. A porous network, S-CMP3, showed the highest hydrogen evolution rate of 6076 µmol h<sup>-1</sup> g<sup>-1</sup> (λ > 295 nm) and 3106 µmol h<sup>-1</sup> g<sup>-1</sup> (λ > 420 nm), with an external quantum efficiency of 13.2% at 420 nm. S-CMP3 outperforms its linear structural analog, P35, while in other cases, non-porous linear polymers are superior to equivalent porous networks. This suggests that microporosity can be beneficial for sacrificial photocatalytic hydrogen evolution, but not for all monomer combinations.</p>


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