Continuous Synthesis and Thermal Elimination of Sulfinyl-Route Poly(p-Phenylene Vinylene) in Consecutive Flow Reactions

2015 ◽  
Vol 38 (10) ◽  
pp. 1749-1757 ◽  
Author(s):  
Neomy Zaquen ◽  
Evelien Baeten ◽  
Joke Vandenbergh ◽  
Laurence Lutsen ◽  
Dirk Vanderzande ◽  
...  
Keyword(s):  
Phenylene Vinylene ◽  
Continuous Synthesis ◽  
Thermal Elimination

A study of the thermal elimination reaction in a poly(p-phenylene vinylene) precursor

1996 ◽  
Vol 287 (2) ◽  
pp. 319-326 ◽  
Author(s):  
Hiren V. Shah ◽  
Andrew R. McGhie ◽  
Georgia A. Arbuckle
Keyword(s):  
Phenylene Vinylene ◽  
Elimination Reaction ◽  
Thermal Elimination

Functional Poly(p-Xylylene)s via Chemical Reduction of Poly(p-Phenylene Vinylene)s

2019 ◽  
Author(s):  
Ain Uddin ◽  
Weifan Sang ◽  
Yong Gao ◽  
Kyle Plunkett
Keyword(s):  
Film Formation ◽  
Chemical Reduction ◽  
Water Soluble ◽  
Phenylene Vinylene ◽  
Polymer Modification ◽  
Polymer Backbone ◽  
Crosslinking Process ◽  
Conducting Membranes ◽  
In Situ Crosslinking

The synthesis of poly(p-xylylene)s (PPXs) with sidechains containing alkyl bromide functionality, and their post-polymer modification, is described. The PPXs were prepared by a diimide hydrogenation of poly(p-phenylene vinylene)s (PPVs) that were originally synthesized by a Gilch polymerization. The polymer backbone reduction was carried out with hydrazine hydrate in toluene at 80 °C to provide polymers with the sidechain-containing bromide functionality intact. To demonstrate post-polymer modification of the sidechains, the resulting PPX polymers were modified with trimethylamine to form tetraalkylammonium ion functionality and were evaluated as anion conducting membranes. While PPX homopolymers containing tetralkylammonium ions were completely water soluble and not able to form valuable films, PPX copolymers containing mixed tetraalkylammonium ions and hydrophobic chains were capable of film formation and alkaline stability. In addition, an in situ crosslinking process that used N,N,N',N'-tetramethyl-1,6-hexanediamine during the tetraalkylammonium formation of brominated PPX polymers was also evaluated and gave reasonable films with conductivities of ~10 mS-cm-1.

Functional Poly(p-Xylylene)s via Chemical Reduction of Poly(p-Phenylene Vinylene)s

2019 ◽  
Author(s):  
Ain Uddin ◽  
Weifan Sang ◽  
Yong Gao ◽  
Kyle Plunkett
Keyword(s):  
Film Formation ◽  
Chemical Reduction ◽  
Water Soluble ◽  
Phenylene Vinylene ◽  
Polymer Modification ◽  
Polymer Backbone ◽  
Crosslinking Process ◽  
Conducting Membranes ◽  
In Situ Crosslinking

The synthesis of poly(p-xylylene)s (PPXs) with sidechains containing alkyl bromide functionality, and their post-polymer modification, is described. The PPXs were prepared by a diimide hydrogenation of poly(p-phenylene vinylene)s (PPVs) that were originally synthesized by a Gilch polymerization. The polymer backbone reduction was carried out with hydrazine hydrate in toluene at 80 °C to provide polymers with the sidechain-containing bromide functionality intact. To demonstrate post-polymer modification of the sidechains, the resulting PPX polymers were modified with trimethylamine to form tetraalkylammonium ion functionality and were evaluated as anion conducting membranes. While PPX homopolymers containing tetralkylammonium ions were completely water soluble and not able to form valuable films, PPX copolymers containing mixed tetraalkylammonium ions and hydrophobic chains were capable of film formation and alkaline stability. In addition, an in situ crosslinking process that used N,N,N',N'-tetramethyl-1,6-hexanediamine during the tetraalkylammonium formation of brominated PPX polymers was also evaluated and gave reasonable films with conductivities of ~10 mS-cm-1.

Continuous Synthesis of Optically Activa α-Hydroxynitriles

1966 ◽  
Vol 88 (18) ◽  
pp. 4299-4300 ◽  
Author(s):  
Wolfgang Becker ◽  
Emanuel Pfeil
Keyword(s):  
Continuous Synthesis

scholarly journals Continuous Synthesis of Nanocrystals via Flow Chemistry Technology

Small ◽  
2021 ◽  
Vol 17 (33) ◽  
pp. 2104166
Author(s):  
Jinsong Sui ◽  
Junyu Yan ◽  
Di Liu ◽  
Kai Wang ◽  
Guangsheng Luo
Keyword(s):  
Flow Chemistry ◽  
Continuous Synthesis

Continuous Synthesis of Nanodroplet-Templated, N-Doped Microporous Carbon Spheres in Microfluidic System for CO2 Capture

2020 ◽  
Vol 12 (47) ◽  
pp. 52571-52580
Author(s):  
Ziheng Jin ◽  
Xia Jiang ◽  
Zhongde Dai ◽  
Lingling Xie ◽  
Wei Wang ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Microfluidic System ◽  
Microporous Carbon ◽  
Carbon Spheres ◽  
Continuous Synthesis
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