scholarly journals Robust bonding and one-step facile synthesis of tough hydrogels with desirable shape by virtue of the double network structure

2011 ◽  
Vol 2 (3) ◽  
pp. 575-580 ◽  
Author(s):  
Junji Saito ◽  
Hidemitsu Furukawa ◽  
Takayuki Kurokawa ◽  
Rikimaru Kuwabara ◽  
Shinya Kuroda ◽  
...  
1981 ◽  
Vol 10 (8) ◽  
pp. 1121-1124 ◽  
Author(s):  
Tatsuya Shono ◽  
Yoshihiro Matsumura ◽  
Kenji Tsubata ◽  
Jiro Takata
Keyword(s):  

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 3162 ◽  
Author(s):  
Wei Liu ◽  
Xiaoyuan Zhang ◽  
Gang Wei ◽  
Zhiqiang Su

We demonstrate the fabrication of novel reduced graphene oxide (rGO)-based double network (DN) hydrogels through the polymerization of poly(N-isopropylacrylamide) (PNIPAm) and carboxymethyl chitosan (CMC). The facile synthesis of DN hydrogels includes the reduction of graphene oxide (GO) by CMC, and the subsequent polymerization of PNIPAm. The presence of rGO in the fabricated PNIPAm/CMC/rGO DN hydrogels enhances the compressibility and flexibility of hydrogels with respect to pure PNIPAm hydrogels, and they exhibit favorable thermoresponsivity, compressibility, and conductivity. The created hydrogels can be continuously cyclically compressed and have excellent bending properties. Furthermore, it was found that the hydrogels are pressure- and temperature-sensitive, and can be applied to the design of both pressure and temperature sensors to detect mechanical deformation and to measure temperature. Our preliminary results suggest that these rGO-based DN hydrogels exhibit a high potential for the fabrication of soft robotics and artificially intelligent skin-like devices.


2018 ◽  
Vol 6 (14) ◽  
pp. 3699-3708 ◽  
Author(s):  
Hong Duc Pham ◽  
Kazuma Hayasake ◽  
Jinhyun Kim ◽  
Thu Trang Do ◽  
Hiroyuki Matsui ◽  
...  

A new dopant free stable HTM using anthanthrone dye has been reported with 11.5% efficiency.


2020 ◽  
Vol 18 (22) ◽  
pp. 4231-4237
Author(s):  
Indrani Banerjee ◽  
Shweta Sagar ◽  
Tarun K. Panda

An efficient one-step methodology for the facile synthesis of N-arylamidines from organic nitriles and amines by using calcium bis(hexamethyldisilazide) as a competent catalyst under solvent-free conditions is reported.


RSC Advances ◽  
2015 ◽  
Vol 5 (29) ◽  
pp. 23080-23085 ◽  
Author(s):  
Peigen Zhang ◽  
Jian Zhang ◽  
Anjian Xie ◽  
Shikuo Li ◽  
Jiming Song ◽  
...  

A one step method has been developed for the fabrication of hierarchical flower-like bismuth tungstate (Bi2WO6) hollow spheres via a solvothermal process.


2021 ◽  
Author(s):  
Ming Yan ◽  
Junfeng Shi ◽  
Song Tang ◽  
Guohang Zhou ◽  
Jiexiang Zeng ◽  
...  

The SA/PAA-VSNP fiber was obtained using dynamic wet spinning through dynamic hydrogen bonding in the double network structure.


Synthesis ◽  
2021 ◽  
Author(s):  
Raed Al-Zoubi ◽  
Reem M. Altamimi ◽  
Walid K. Al-Jammal ◽  
Khaled Q. Shawakfeh ◽  
Mazhar S. Al-Zoubi ◽  
...  

A facile and unprecedented synthesis of 2,3-diiodinated or 2,6-diiodinated diarylether/thioether derivatives through regioselective Ullmann-type cross couplings of 5-substituted-1,2,3-triiodobenzene and phenols/thiophenols is described. Remarkably, the coupling reactions are simply controlled by the type of nucleophiles and the nature of C5 substituent at 1,2,3-triiodoarenes providing the internal or terminal coupling products in high regioselectivity and good isolated yields. Noticeable steric and electronic effects were clearly observed on both 1,2,3-triiodoarene and nucleophile. The highest yields were isolated from a combination between either electron-poor 1,2,3-triiodoarenes and phenols or electron-rich 1,2,3-triiodoarenes and thiophenols. The optimized conditions were found to be suitable for several functional groups. Using this methodology, mammary carcinoma inhibitor BTO-956 is prepared in only one step with excellent regioselectivity and good isolated yield. This report discloses the first method to make 2,3-diiodinated and 2,6-diiodinated diarylethers/thioethers in one step that is efficient, regioselective, general in scope and truly remarkable precursors for other transformations.


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