1374551-76-4Relevant academic research and scientific papers
Concentration- and time-dependent eccentric changes in circular dichroism of saccharide-linked ethynylpyridine oligomer with copper(II) ions
Abe, Hajime,Ohishi, Yuki,Inouye, Masahiko
, p. 5209 - 5214 (2012)
We studied the preparation and circular dichroism (CD) behavior of 2,6-pyridylene ethynylene octameric oligomer linked to a β-d-glucoside moiety with a C20-alkylene chain. The addition of Cu(OTf)2 salt led to a remarkable enhancement of the first CD band of the oligomer, and an unexpected concentration and time dependency were observed. For example, when 1.0 × 10-3 M of Cu(OTf)2 was added to a 1,2-dichloroethane solution of the oligomer (5.0 × 10-4 M, unit concentration), the CD band appeared in the positive at first and gradually inverted into the negative with time.
