Synthetic molecular machine based on reversible end-to-interior and end-to-end loop formation triggered by electrochemical stimuli
SCIE
SCOPUS
- Title
- Synthetic molecular machine based on reversible end-to-interior and end-to-end loop formation triggered by electrochemical stimuli
- Authors
- Lee, JW; Hwang, I; Jeon, WS; Ko, YH; Sakamoto, S; Yamaguchi, K; Kim, K
- Date Issued
- 2008-01
- Publisher
- WILEY-V C H VERLAG GMBH
- Abstract
- We have designed and synthesized a novel [2]pseudorotaxane-based molecular machine in which the interconversion between end-to-interior and end-to-end loop structures is reversibly controlled by electrochemical stimuli. Cucurbit[8]uril (CB[8]) and the thread molecule 3(4+) with an electron-rich hydroxynaphthalene unit and two electron-deficient viologen units form the 1:1 complex 4(4+) with an end-to-interior loop structure, which is reversibly converted into an end-to-end structure upon reduction. Large changes in shape and size of the molecule accompany the reversible redox process. The key feature of the machine-like behavior is the reversible interconversion between an intramolecular charge-transfer complex and viologen cation radical dimer inside CB[8] triggered by electrochemical stimuli.
- Keywords
- charge transfer; electrochemistry; molecular machines; pseudorotaxanes; supramolecular chemistry; CHARGE-TRANSFER COMPLEX; DIMENSIONAL COORDINATION POLYMER; INTRAMOLECULAR CONTACT FORMATION; SIDE-CHAIN PSEUDOPOLYROTAXANES; UNFOLDED POLYPEPTIDE-CHAINS; LINEAR ROTAXANE DIMER; CUCURBITURIL HOMOLOGS; INCORPORATING CUCURBITURIL; SUPRAMOLECULAR ASSEMBLIES; AQUEOUS-SOLUTION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22523
- DOI
- 10.1002/asia.200800054
- ISSN
- 1861-4728
- Article Type
- Article
- Citation
- CHEMISTRY-AN ASIAN JOURNAL, vol. 3, no. 8-9, page. 1277 - 1283, 2008-01
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