Ultrafast Charge-Transfer Dynamics:  Studies of p-Nitroaniline in Water and Dioxane

The intersystem crossing, internal conversion, and vibrational relaxation of p-nitroanaline (PNA) in water and 1,4-dioxane have been studied using ultrafast transient absorption spectroscopy. Following the photoexcitation of PNA at 400 nm, the transient absorption dynamics were probed from 340 to 96...

Full description

Saved in:
Bibliographic Details
Published in:The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 1998-02, Vol.102 (7), p.1062-1067
Main Authors: Thomsen, C. L, Thøgersen, J, Keiding, S. R
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The intersystem crossing, internal conversion, and vibrational relaxation of p-nitroanaline (PNA) in water and 1,4-dioxane have been studied using ultrafast transient absorption spectroscopy. Following the photoexcitation of PNA at 400 nm, the transient absorption dynamics were probed from 340 to 960 nm. The measurements were performed on a common, absolute absorption scale, permitting an accurate determination of the temporal evolution of the absorption spectrum. The data reveal that relaxation on the excited singlet state surface, followed by internal conversion to the ground state and intersystem crossing to the triplet state, is extremely rapid (
ISSN:1089-5639
1520-5215
DOI:10.1021/jp972492g