naa a22 4500 510733417 CHVBK 20180411083001.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s12039-012-0351-0 doi (NATIONALLICENCE)springer-10.1007/s12039-012-0351-0 Synthesis of novel nanostructured chiral poly(amide-imide)s containing dopamine and natural amino acids [Elektronische Daten] [Shadpour Mallakpour, Amin Zadehnazari] Four new thermally stable and optically active poly(amide-imide)s (PAI)s with good inherent viscosities were synthesized from the direct polycondensation reaction of N,N′-(pyromellitoyl)-bis-L-α-amino acids with 3,5-diamino-N-(3,4-dihydroxy-phen-ethyl)benzamide in a medium consisting of a molten salt, tetrabutylammonium bromide, and triphenyl phosphite as the activator. The polymerization reactions produced a series of novel PAIs containing dopamine segment in the side chain in high yield with inherent viscosities between 0.33 and 0.49dL/g. The obtained polymers were typically characterized by means of FT-IR, 1H NMR spectroscopy, elemental analyses, powder X-ray diffraction, field emission scanning electron microscopy, inherent viscosity, and solubility tests. Thermal properties and flame retardant behaviour of the PAIs were also investigated using thermal gravimetric analysis (TGA and DTG) and limiting oxygen index (LOI). Data obtained by thermal analysis revealed that these polymers showed good thermal stability. Furthermore, high char yield in TGA and good LOI values indicated that the obtained polymers were capable of exhibiting good flame retardant properties. Graphical Abstract A series of chiral nanostructured poly(amide-imide)s containing pendant dopamine moiety were prepared by direct polyamidation reaction of 3,5-diamino-N-(3,4-dihydroxyphenethyl)benzamide, and different chiral N,N′-(pyromellitoyl)-bis-L-α-amino acids in the presence of molten tetrabutylammonium bromide as a molten ionic salt and triphenyl phosphite as an activating agent. Indian Academy of Sciences, 2013 Thermally stable nationallicence green chemistry nationallicence optically active polymers nationallicence tetrabutylammonium bromide nationallicence Mallakpour Shadpour Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, 84156-83111, Isfahan, Islamic Republic of Iran aut Zadehnazari Amin Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, 84156-83111, Isfahan, Islamic Republic of Iran aut Journal of Chemical Sciences Springer-Verlag 125/1(2013-01-01), 203-211 0974-3626 125:1<203 2013 125 12039 https://doi.org/10.1007/s12039-012-0351-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12039-012-0351-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mallakpour Shadpour Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, 84156-83111, Isfahan, Islamic Republic of Iran aut NATIONALLICENCE 700 1- Zadehnazari Amin Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, 84156-83111, Isfahan, Islamic Republic of Iran aut NATIONALLICENCE 773 0- Journal of Chemical Sciences Springer-Verlag 125/1(2013-01-01), 203-211 0974-3626 125:1<203 2013 125 12039 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer