Thermal transitions of aromatic polyesters with and without side chains
نویسندگان
چکیده
منابع مشابه
Enantiorecognition ability of peptoids with α-chiral, aromatic side chains.
The enantiorecognition ability of oligomeric N-substituted glycines or "peptoids" with α-chiral, aromatic side chains was investigated by HPLC and (1)H NMR studies.
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The importance of hydrogen bonding studies lies in their structural, biological and medicinal applications. Non-conventional hydrogen bonds are weak, but are found to play an important role in biological molecules. In view of their importance,a study of the aromatic hydrogen bonds in peptides with aromatic amino acid side chains was carried out. The results indicate a reasonable probability for...
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A new class of salicylaldiminato tin(II) catalysts having different alkoxy side chains has been developed. The ligands were modified to have different lengths and flexibilities such as –(CH2)2– (2a), –(CH2)3– (2b), –(ortho-C6H4)CH2– (2c) and –(CH2)2–O–(CH2)2– (2d). Complexes 2a, b were characterized crystallographically revealing a more constrained environment around the metal in complex 2a. Th...
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Thermal degradation of aromatic polyesters (see text for formula) (m = 2, 3, 4, 5, and 6) was studied by pyrolysis/gas chromatography using a Curie-point pyrolyzer directly attached to a gas chromatograph with a thermally stable polar separation column (Thermon-1000) to cover a wide range of the degradation products. The characteristic peaks appearing on the pyrograms were identified using a ma...
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Many ions are known to affect the activity, stability, and structural integrity of proteins. Although this effect can be generally attributed to ion-induced changes in forces that govern protein folding, delineating the underlying mechanism of action still remains challenging because it requires assessment of all relevant interactions, such as ion-protein, ion-water, and ion-ion interactions. H...
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ژورنال
عنوان ژورنال: Journal of Polymer Science Part A-1: Polymer Chemistry
سال: 1969
ISSN: 0449-296X,1542-9350
DOI: 10.1002/pol.1969.150071214