Spectroscopy Of Tryptophan Derivatives In Supersonic Expansions: Addition Of Solvent Molecules

Mark Sulkes; Jeffrey Sipior

doi:10.1117/12.945465

27 April 1988 Spectroscopy Of Tryptophan Derivatives In Supersonic Expansions: Addition Of Solvent Molecules

Mark Sulkes, Jeffrey Sipior

Proceedings Volume 0910, Fluorescence Detection II; (1988) https://doi.org/10.1117/12.945465
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

One or more solvent molecules have been added to selected derivatives of the amino acid tryptophan. The preparations are carried out using supersonic gas expansion techniques and the samples are probed via laser induced fluorescence spectra and fluorescence lifetime measurements. In tryptophan derivatives that have a polar side chain at the 3-indole position, the solvent complexes formed are different from those previously observed in indoles. Now it is the case that solvent adducts bind overwhelmingly at the polar sites of the 3-indole side chain and not directly on the indole. For at least one derivative, tryptamine, addition of a single water or alcohol molecule results in formation of one solvent-stabilized conformation independent of the starting conformation of the bare derivative molecule.

Citation Download Citation

Mark Sulkes and Jeffrey Sipior "Spectroscopy Of Tryptophan Derivatives In Supersonic Expansions: Addition Of Solvent Molecules", Proc. SPIE 0910, Fluorescence Detection II, (27 April 1988); https://doi.org/10.1117/12.945465

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