Aspartic acid in a new role: Synthesis and application of a pH-responsive cyclopolymer containing residues of the amino acid

A sorbent containing pH-responsive chelating residues of aspartic and maleic acids for mitigation of toxic metal ions, cationic, and anionic dyes

“…The C C and = C–H stretching of diallyl motifs in the monomers usually appears at ≈ 1640 cm −1 and ≈3080 cm −1 , respectively. 20,21 These vibrations are absent in the synthesized resin 7, thereby implying the absence of any residual alkene motifs as it is consumed to form the cyclic rings. Upon treatment with NaOH, pH-responsive CPZA 7 was transformed to its anionic form CAPE 8.…”

“…Monomer N,N-diallylaspartic acid hydrochloride (5) was synthesized as a white solid (85%) by reacting diallylamine and dimethyl maleate using the procedure as described. 20 2.3. Synthesis of N 1 ,N 1 ,N 6 ,N 6 -tetraallylhexane-1,6-diamine 4…”

Synthesis and application of polyzwitterionic and polyampholytic maleic acid-alt-(diallylamino)propylphosphonates

“…Note that PZ 23 performed much better than its counterpart 24 having a monoethyl ester group, thereby conrming the necessity of the presence of the completely hydrolyzed phosphonate motifs to be a better antiscalnt. 53 Glutamic acid-based PZ 21, 54 aspartic acid-based PZ 22 55 and PZ 25 12 containing phosphonate and sulfonate pendants as well as 20 56 containing carboxyl group in both pendants performed very well imparting similar PSIs. However, the current PZ 4 with greater negative charge density outperformed all the other PZs presented in Scheme 5.…”

Stimuli‐Responsive Macromolecular Architecture by Butler Cyclopolymerizations: Synthesis and Applications

“…Cationic monomers 111 and 113 having the residue of aspartic acid, underwent cyclopolymerizations to generate polymers 112 , 114 – 117 having different charge types and densities and residues of aspartic acid on the polymer chains (Scheme 19). [80] PZ 115 (5 ppm) demonstrated 99 % scale inhibition for 200 min with an induction time of 800 min in a supersaturated CaSO 4 solution. The dianion 117 /PEG was used successfully to construct ATPS; the acid having amino acid residue can be an attractive system for the separation of biomolecules like proteins.…”