Inclusion of methylviologen in cucurbit[7]uril
SCIE
SCOPUS
- Title
- Inclusion of methylviologen in cucurbit[7]uril
- Authors
- Kim, HJ; Jeon, WS; Ko, YH; Kim, K
- Date Issued
- 2002-04-16
- Publisher
- NATL ACAD SCIENCES
- Abstract
- The inclusion behavior of methylviologen (N,N'-dimethyl-4,4'-bipyridinium, MV) dication in cucurbit[7]uril (CB[7]) has been studied by using various spectroscopic and electrochemical methods. The inclusion complex of MV dication in CB[7] is stable thermodynamically and kinetically. The electrochemical study reveals that unlike P-cyclodextrin, CB[7] prefers the charged species, MV dication (MV2+), and cation radical (MV+.) to the fully reduced neutral (MV0) species as guests. Dimerization of MV+. is suppressed effectively by forming a stable complex with CB[7] in aqueous solution as confirmed by spectroelectrochemical experiments. Furthermore, the first redox process (MV2+/MV+.) of the MV2+-CB[7] complex occurs predominantly via the direct electron transfer pathway, whereas the second redox process (MV+./MV0) occurs via both the direct and indirect pathway because of the low affinity of the fully reduced species MV0 to CB[7].
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12724
- DOI
- 10.1073/PNAS.062656699
- ISSN
- 0027-8424
- Article Type
- Article
- Citation
- PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, vol. 99, no. 8, page. 5007 - 5011, 2002-04-16
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