Indole-H2O in the gas phase. Structures, barriers to internal motion, and S1 ← S0 transition moment orientation. Solvent reorganization in the electronically excited state

Timothy M. Korter, David W. Pratt, Jochen Küpper

Research output: Contribution to journalArticlepeer-review

74 Scopus citations

Abstract

Rotationally resolved S1 ← S0 fluorescence excitation experiments have been performed on a solute-solvent complex of indole and water in a molecular beam. The results show that the complex whose S1 ← S0 origin is shifted by 132 cm-1 below the bare molecule origin is a 1:1 complex, with the water molecule linked to the indole frame via a quasi-linear N-H⋯OH2 σ hydrogen bond. The results also show that both the position and the orientation of the attached water molecule change when the photon is absorbed. The properties of the intermolecular potential-energy surfaces that govern these motions in both electronic states are derived from an analysis of the high-resolution spectrum.

Original languageEnglish (US)
Pages (from-to)7211-7216
Number of pages6
JournalJournal of Physical Chemistry A
Volume102
Issue number37
DOIs
StatePublished - Sep 10 1998
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Indole-H<sub>2</sub>O in the gas phase. Structures, barriers to internal motion, and S<sub>1</sub> ← S<sub>0</sub> transition moment orientation. Solvent reorganization in the electronically excited state'. Together they form a unique fingerprint.

Cite this