Unprecedented Wiring Efficiency of Sulfonated Graphitic Carbon Nitride Materials: Toward High-Performance Amperometric Recombinant CotA Laccase Biosensors

2018 ◽  
Vol 7 (1) ◽  
pp. 1474-1484 ◽  
Author(s):  
Alain R. Puente-Santiago ◽  
Daily Rodríguez-Padrón ◽  
Xuebo Quan ◽  
Mario J. Muñoz Batista ◽  
Lígia O. Martins ◽  
...  
2021 ◽  
Author(s):  
Jingheng Ning ◽  
Jiaqian Wei ◽  
Shouen Huang ◽  
Faxiang Wang ◽  
xin luo ◽  
...  

A new electrochemical sensor has been constructed for ultra-sensitive detection of lead ions (Pb2+) by square wave anodic stripping voltammetry (SWASV), based on copper sulfide/graphitic carbon nitride nanocomposite modified glassy...


2020 ◽  
Author(s):  
Saikat Das ◽  
Kathiravan Murugesan ◽  
GONZALO JAVIER VILLEGAS RODRIGUEZ ◽  
Jaspreet Kaur ◽  
Joshua Barham ◽  
...  

Polymeric graphitic carbon nitride materials have attracted significant interest in recent years and found applications in diverse light-to-energy conversions such as artificial photosynthesis, CO<sub>2 </sub>reduction or degradation of organic pollutants. However, their utilization in synthetic photocatalysis especially in the direct functionalization of C(sp<sup>3</sup>)−H bonds remains underexplored. Herein, we report mesoporous graphitic carbon nitride (mpg-CN) as a heterogeneous organic semiconductor photocatalyst for direct arylation of sp<sup>3</sup> C−H bonds <i>via </i>a combination of<i> </i>hydrogen atom transfer and nickel catalysis. Our protocol has a broad synthetic scope (>70 examples including late-stage modification of densely functionalized bio-active molecules), is operationally simple, and shows high chemo- and regioselectivity. Facile separation and recycling of the mpg-CN catalyst in combination with its low preparation cost, innate photochemical stability and low toxicity are beneficial features overcoming typical shortcomings of homogeneous photocatalysis. Additionally, mechanistic investigations indicate that an unprecedented energy transfer process (EnT) from the organic semiconductor to the nickel complex is operating.


2020 ◽  
Vol 563 ◽  
pp. 336-346 ◽  
Author(s):  
Shifei Kang ◽  
Zirou Fang ◽  
Maofen He ◽  
Mengya Chen ◽  
Yuqiong Gao ◽  
...  

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