23815-45-4

Upstream product

• 877-88-3 3,5-dimethoxybenzyl bromide 

Downstream Products

• 875152-71-9 2-(3,5-dimethoxy-benzyl)-5-isobutoxy-3-oxo-3,6-dihydro-2H-pyridine-1-carboxylic acid methyl ester 
• 34489-36-6 1,1-dimethyl-(3',5'-dimethoxyphenyl)ethanol 
• 1239593-09-9 1-(2,6-difluorophenyl)-2-(3,5-dimethoxyphenyl)ethanone 
• 1388152-66-6 1,3-dimethoxy-5-((3E,7E)-4,8,12-trimethyltrideca-3,7,11-trienyl)benzene 
• 1388152-64-4 (E)-1-(4,8-dimethylnona-3,7-dien-1-yl)-3,5-dimethoxybenzene 
• 1310694-35-9 tert-butyl((R,6E,10E)-13-(3,5-dimethoxyphenyl)-6,10-dimethyltrideca-6,10-dien-1-yn-3-yloxy)dimethylsilane 
• 1310694-32-6 (R,E)-tert-butyl(9-(3,5-dimethoxyphenyl)-6-methylnon-6-en-1-yn-3-yloxy)dimethylsilane 
• 1310694-28-0 (R,8E,12E)-5-(tert-butyldimethylsilyloxy)-15-(3,5-dimethoxyphenyl)-2,8,12-trimethylpentadeca-8,12-dien-3-yn-2-ol 
• 1310694-26-8 (R,E)-5-(tert-butyldimethylsilyloxy)-11-(3,5-dimethoxyphenyl)-2,8-dimethylundec-8-en-3-yn-2-ol 
• 1310694-22-4 (R,8E,12E)-15-(3,5-dimethoxyphenyl)-2,8,12-trimethylpentadeca-8,12-dien-3-yne-2,5-diol 
• 1310694-20-2 (R,E)-11-(3,5-dimethoxyphenyl)-2,8-dimethylundec-8-en-3-yne-2,5-diol 
• 1310694-16-6 (4E,8E)-11-(3,5-dimethoxyphenyl)-4,8-dimethylundeca-4,8-dienal 
• 1310694-14-4 (E)-7-(3,5-dimethoxyphenyl)-4-methylhept-4-enal 
• 1310694-67-7 C₂₄H₃₆O₃ 

Relevant academic research and scientific papers

Synthesis and characterization of a novel crosslinkable side-chain sulfonated poly(arylene ether sulfone) copolymer proton exchange membranes

A series of novel crosslinkable side-chain sulfonated poly(arylene ether sulfone) copolymers (S-SPAES(x/y)) was prepared from 4,4′-biphenol, 4,4′-difluorodiphenyl sulfone, and a new difluoro aromatic monomer 1-(2,6-difluorophenyl)-2-(3,5-dimethoxyphenyl)-1,2-ethanedione (DFDMED) via co-polycondensation, demethylation, and further nucleophilic substitution of 1,4-butane sultone. Meanwhile, quinoxaline-based crosslinked copolymers (CS-SPAES(x/y)) were obtained via cyclo-condensation between S-SPAES(x/y) and 3,3′-diaminobenzidine. Both the crosslinkable and crosslinked copolymer membranes exhibit good mechanical properties and high anisotropic membrane swelling. Crosslinkable S-SPAES(1/2) with an ion exchange capacity (IEC) of 2.01 mequiv. g-1 displays a relatively high proton conductivity of 180 mS cm-1 and acceptable single-cell performance, which is attributed to its good microphase separation resulting from the side-chain sulfonated copolymer structures. Compared with S-SPAES(1/1) (IEC of 1.68 mequiv. g-1), crosslinked CS-SPAES(1/2) with a comparable IEC exhibits a larger conductivity of 157 mS cm-1, and significantly higher oxidative stability and lower membrane swelling, suggesting a distinct performance improvement due to the quinoxaline-based crosslinking. This journal is