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Volumn 10, Issue 12, 2004, Pages 2953-2959

Dynamic chemical devices: Modulation of photophysical properties by reversible, ion-triggered, and proton-fuelled nanomechanical shape-flipping molecular motions

Author keywords

Cation binding; Fluorescence; Molecular devices; Molecular switching; Supramolecular chemistry

Indexed keywords

ADDITION REACTIONS; COMPLEXATION; FLUORESCENCE; LIGHT EMISSION; PROTONS;

EID: 3042740871     PISSN: 09476539     EISSN: None     Source Type: Journal    
DOI: 10.1002/chem.200306045     Document Type: Article
Times cited : (83)

References (34)
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    • a) C. Mao, W. Sun, Z. Shen, N. C. Seeman, Nature 1999, 397, 144-146; C. M. Niemeyer, M. Adler, Angew. Chem. 2002, 114, 3933-3937; Angew. Chem. Int. Ed. 2002, 41, 3779-3783;
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    • b) A recent report describes a proton-fuelled process: D. Liu, S. Balasubramanian, Angew. Chem. 2003, 115, 5912-5914; Angew. Chem. Int. Ed. 2003, 42, 5734-5736;
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    • in press
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    • note
    • In acetonitrile the typical band of ligand 1 can also be observed. However, in the spectra of the complex this band shows a reduced intensity (<2% with respect to the intensity of the free ligand), but at the same time shows an unquenched excited-state lifetime and a corrected excitation spectrum that is proportional to that of the ligand. These findings are a clear indication that such a signal is due to the small portion of the ligand in the solvent that is not complexed. In dichloromethane, in which the association is stronger, the contribution of this band is almost negligible.
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    • 2+ are not observed during the NMR switching experiments. We also note that the absorption and emission spectra of complex 2 are identical to those obtained in the switching experiments.
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    • Martin, R.B.1    Lissfelt, J.A.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.