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Inductive Effects in Ruthenium-Modified Amino Acids

✍ Scribed by Bernd Geißer; Thomas Skrivanek; Ute Zimmermann; Derk J. Stufkens; Ralf Alsfasser


Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
417 KB
Volume
2001
Category
Article
ISSN
1434-1948

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✦ Synopsis


Emission spectroscopy has been used to probe and quantify electronic interactions mediated by alkyl side chains in a homologous series of amino acids. The ω-amine functions of diaminopropionic acid (DAPA), diaminobutyric acid (DABA), ornithine, and lysine were covalently labeled with a luminescent [Ru(bipy) 3 ] 2+ fragment. Protonation of the α-amine function results in a significant dependence of nonradiative excited-state decay rates on the number of methylene groups, n, in the respective side chain. Two analogous series of compounds in which the α-amino acid moiety was replaced by


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