Initial Processes of Proton Transfer in Salicylideneaniline Studied by Time-Resolved Photoelectron Spectroscopy

Taro Sekikawa,Oliver Schalk,Albert Stolow,Andrey E Boguslavskiy,Guorong Wu

doi:10.1051/epjconf/20134102031

Abstract

Excited state intramolecular proton transfer (ESIPT) in salicylideneaniline (SA) and selected derivatives substituted in para -position of the anilino group has been investigated by femtosecond time-resolved photoelectron spectroscopy (TRPES) and time-dependent density functional theory (TDDFT). The planarity of the molecule was found to be a key parameter to describe ESIPT.

Highlights

Proton transfer is a fundamental and important chemical reaction in biological systems
Excited state intramolecular proton transfer (ESIPT) in salicylideneaniline (SA) and selected derivatives substituted in para-position of the anilino group has been investigated by femtosecond time-resolved photoelectron spectroscopy (TRPES) and time-dependent density functional theory (TDDFT)
We found a drastic dependence of the photo-induced dynamics of SA on the excitation energies

Summary

Introduction

Proton transfer is a fundamental and important chemical reaction in biological systems. Excited state intramolecular proton transfer (ESIPT) in salicylideneaniline (SA) and selected derivatives substituted in para-position of the anilino group has been investigated by femtosecond time-resolved photoelectron spectroscopy (TRPES) and time-dependent density functional theory (TDDFT). We study the excited state proton transfer (ESIPT) reaction in salicylideneaniline (SA). The basic understanding of the mechanism is as follows: In the ground state, the enol form is more stable than the keto form.

Results

Conclusion