Spectroscopy of jet-cooled constrained tryptophan derivatives

Chin Khuan Teh; Alireza Gharavi; Mark Sulkes

doi:10.1117/12.17739

1 May 1990 Spectroscopy of jet-cooled constrained tryptophan derivatives

Chin Khuan Teh, Alireza Gharavi, Mark Sulkes

Proceedings Volume 1204, Time-Resolved Laser Spectroscopy in Biochemistry II; (1990) https://doi.org/10.1117/12.17739
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

We have studied tryptophan derivatives in which rotations about the C_α-C_β and C_β-C_γ bonds are restricted by incorporating the a-amino group into a six-membered ring. Samples were volatilized into He flows and cooled via supersonic gas expansions. Both bare molecules and molecules complexed with polar solvent adducts have been studied via laser induced fluorescence spectra and fluorescence lifetime measurements. We compare jet cooled conformer and lifetime results with some in solution. Results obtained for bare molecule and solvent are compared with analogous data for conformationally unconstrained tryptophan derivatives studied earlier. The jet-cooled lifetime data provide indications of the presence of the ¹L_a state.

Citation Download Citation

Chin Khuan Teh, Alireza Gharavi, and Mark Sulkes "Spectroscopy of jet-cooled constrained tryptophan derivatives", Proc. SPIE 1204, Time-Resolved Laser Spectroscopy in Biochemistry II, (1 May 1990); https://doi.org/10.1117/12.17739

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