View : 36 Download: 0

Bi-directional inclusion complexation of methylalkyl viologens with β-cyclodextrin and naphthyl group-tethered β-cyclodextrins

Title
Bi-directional inclusion complexation of methylalkyl viologens with β-cyclodextrin and naphthyl group-tethered β-cyclodextrins
Authors
Joon W.P.Soo Y.L.
Ewha Authors
박준우
SCOPUS Author ID
박준우scopusscopus
Issue Date
2003
Journal Title
Journal of Inclusion Phenomena
ISSN
0923-0750JCR Link
Citation
vol. 47, no. 3-4, pp. 143 - 148
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Inclusion complexation of methylalkyl viologens (C1C nV2+; n = 7-10, 12) with mono-6-O-(2-sulfonato-6-naphthyl) -β-CD (1) and mono-6-O-(2-naphthyl)-β-CD (2) were studied by steady-state and time-resolved fluorescence spectroscopies and compared with the binding of the viologens with native β-CD investigated by induced circular dichroism. The viologens form bimodal complexes with 1 and 2, in which the bipyridinium group of the viologens is placed on the primary side (type I complex) and secondary side (type II complex) of β-CD cavity, while the group is predominantly on the secondary side in complexes with native β-CD. The microscopic binding constants KI and KII were calculated from the analysis of fluorescence data. The formation of the type I complexes with 1 and 2 appears to be largely due to the charge-transfer interaction between the bipyridinium and naphthyl groups in the complexes. This work shows that the location of the bipyridinium group in β-CD complexes and in the type II complexes of the viologens with 1 and 2 depends little on the length of alkyl chain of the viologens.
DOI
10.1023/B:JIPH.0000011775.87816.14
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE