Samenvatting
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.
Originele taal-2 | Engels |
---|---|
Pagina's (van-tot) | 1525-1528 |
Aantal pagina's | 4 |
Tijdschrift | Organic Letters |
Volume | 2 |
Nummer van het tijdschrift | 11 |
DOI's | |
Status | Gepubliceerd - 2000 |