期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 18, 期 5, 页码 1528-1535出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201102981
关键词
energy transfer; molecular antenna; photochemistry; photophysics; rotaxanes
资金
- Italy by Fondazione Carisbo
- MAE DGPCC
- MIUR [PRIN 20085ZXFEE]
- Deutsche Forschungsgemeinschaft [SFB 765]
Two rotaxanes with benzyl ether axles and tetralactam wheels were synthesized through an anion template effect. They carry naphthalene chromophores attached to the stopper groups and a pyrene chromophore attached to the wheel. The difference between the two rotaxanes is represented by the connecting unit of the naphthyl chromophore to the rotaxane axle: a triazole or an alkynyl group. Both rotaxanes exhibit excellent light-harvesting properties: excitation of the naphthalene chromophores is followed by energy transfer to the pyrene unit with efficiency higher than 90?% in both cases. This represents an example of light-harvesting function among chromophores belonging to mechanically interlocked components, that is, the axle and the wheel of the rotaxanes.
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