A new photo-switchable "on-off" host-guest system
SCIE
SCOPUS
KCI
- Title
- A new photo-switchable "on-off" host-guest system
- Authors
- Kim, Y; Ko, YH; Jung, M; Selvapalam, N; Kim, K
- Date Issued
- 2011-01
- Publisher
- ROYAL SOC CHEMISTRY
- Abstract
- A new photo-switchable "on-off" host-guest system comprising cucurbit[7]uril (CB[7]) and a photoresponsive cinnamamide derivative (trans-(3-phenyl-acryloylamino)-acetic acid, E-1) is studied. The cinnamamide derivative and CB[7] forms a stable 1 : 1 host-guest complex (CB[7].E-1) with a high binding constant (K = 2.1 10(4) M-1). Irradiation of UV light (300 nm) to an aqueous solution of CB[7].E-1 induces the E-to Z-conformational change of the cinnamamide derivative, which then leads to the dissociation of the complex as evidenced by UV-visible and H-1-NMR spectroscopy. The reverse process, photo-induced host-guest complex formation between CB[7] and Z-1 is achieved by irradiation of UV light at 254 nm. The photo-switchable "on-off" host-guest system shows high reversibility and switching efficiency, which makes it potentially useful in designing photoresponsive gating systems.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/11886
- DOI
- 10.1039/C1PP05055A
- ISSN
- 1474-905X
- Article Type
- Article
- Citation
- PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES, vol. 10, no. 9, page. 1415 - 1419, 2011-01
- Files in This Item:
-
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.