title: On the energy landscapes of 3-indole acetic acid and 3-indole propionic acid. A study of side chain flexibilities in their S(0) and S(1) electronic states.
abstract: The tandem of 3-indole acetic acid (IAA) and 3-indole propionic acid (IPA) is ideally suited for a detailed study of the intramolecular forces responsible for the conformational properties of species containing side chains. Toward this end, high resolution S(1)<-- S(0) excitation spectra of the three origin bands in IAA and the two origin bands in IPA were recorded and analyzed. Each origin is assigned to a unique conformer. A discussion of the resulting energy landscape is given.
authors.affiliation: Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.
authors.forename: Tri V
authors.initials: TV
authors.lastname: Nguyen
authors.forename: John T
authors.initials: JT
authors.lastname: Yi
authors.forename: David W
authors.initials: DW
authors.lastname: Pratt
mesh_terms: D007210:Indoleacetic Acids / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D011422:Propionates / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013816:Thermodynamics
chemical_list: D007210:Indoleacetic Acids; D007211:Indoles; D011422:Propionates; C030737:indoleacetic acid; C095446:3-(indol-3-yl)propionic acid