New sensitizer-modified calix[4]arenes enabling near-UV excitation of complexed luminescent lanthanide ions
Journal Article
·
· Journal of the American Chemical Society
- Univ. of Twente, Enschede (Netherlands)
- Univ. of Amsterdam (Netherlands)
The synthesis is described of a series of calix[4]arenes with three different sensitizer chromophores (`antenna`) attached to the lower rim via a short spacer. In the Eu{sup 3+} and Tb{sup 3+} complexes of these calixarenes, photoexcitation of the antenna can induce lanthanide emission via intramolecular energy transfer. Although the higher energy of the Tb{sup 3+} luminescent state makes it more difficult to sensitize than in the case of Eu{sup 3+}, especially a triphenylene antenna is found to have strong sensitizing ability toward not only Eu{sup 3+} but also Tb{sup 3+}, allowing excitation of the lanthanide with wavelengths extending to 350 nm. 24 refs., 6 figs., 4 tabs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 111232
- Journal Information:
- Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 37 Vol. 117; ISSN JACSAT; ISSN 0002-7863
- Country of Publication:
- United States
- Language:
- English
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