Conformational ordering of apolar, chiral m-phenylene ethynylene oligomers
Org Lett
; 2(11): 1525-8, 2000 Jun 01.
Article
em En
| MEDLINE
| ID: mdl-10841470
A series of m-phenylene ethynylene oligomers containing nonpolar, (S)-3,7-dimethyl-1-octanoxy side chains have been synthesized and studied. In apolar alkane solvents, oligomers of sufficient length (n > 10) were found to adopt a helical conformation with a large twist sense bias. In contrast, in chloroform the oligomers adopt a random coil conformation. Surprisingly, the strong twist sense bias was determined to be highly time dependent and is partially attributed to intermolecular aggregation.
Buscar no Google
Base de dados:
MEDLINE
Idioma:
En
Revista:
Org Lett
Assunto da revista:
BIOQUIMICA
Ano de publicação:
2000
Tipo de documento:
Article