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Titolo:
SYNTHESIS OF HELICAL POLYAMIDES FROM A TA RTARIC ACID-DERIVATIVE AND AROMATIC DIAMINES
Autore:
KONDO F; IWAIZUMI T; KIMURA H; TAKEISHI M;
Indirizzi:
YAMAGATA UNIV,DEPT MAT SCI & ENGN,4-3-16 YONEZAWA YAMAGATA 992 JAPAN
Titolo Testata:
Kobunshi ronbunshu
fascicolo: 12, volume: 54, anno: 1997,
pagine: 908 - 913
SICI:
0386-2186(1997)54:12<908:SOHPFA>2.0.ZU;2-C
Fonte:
ISI
Lingua:
JPN
Soggetto:
AZOBENZENE RESIDUES; POLYMERS; POLYCONDENSATION; PEPTIDE;
Keywords:
POLYAMIDE; TARTARIC ACID; DIRECT POLYCONDENSATION; HELIX; AZOBENZENE; PHOTOISOMERIZATION;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
19
Recensione:
Indirizzi per estratti:
Citazione:
F. Kondo et al., "SYNTHESIS OF HELICAL POLYAMIDES FROM A TA RTARIC ACID-DERIVATIVE AND AROMATIC DIAMINES", Kobunshi ronbunshu, 54(12), 1997, pp. 908-913

Abstract

Polyamides were prepared by direct polycondensation of a tartaric acid derivative with aromatic diamines using PCI3 and N-acethylphenylhydrazine as a condensing system. The high specific rotations and CD spectra of the polyamides indicated that the polymers have an ordered conformation. The most stable conformation computed for the polyamides was a new type of helix. Photoirradiation of the polymer obtained with 4,4'-diaminoazobenzene induced a change of the helical conformation because of the trans-cis isomerization of the azobenzene units in the main chain.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 00:54:38