• Home
  1. Home
  2. Ground and Excited State Double Hydrogen Transfer in Symmetric and Asymmetric Potentials: Comparison of 2,7,12,17-Tetra-n-propylporphycene with 9-Acetoxy-2,7,12,17-tetra-n-propylporphycene
Scientific article
English

Ground and Excited State Double Hydrogen Transfer in Symmetric and Asymmetric Potentials: Comparison of 2,7,12,17-Tetra-n-propylporphycene with 9-Acetoxy-2,7,12,17-tetra-n-propylporphycene

Contributors

Fita, Piotr; Garbacz, Piotr; Nejbauer, Michał; Radzewicz, Czesław; Waluk, Jacek

Published in

Chemistry, vol. 17, no. 13, p. 3672-3678

Publication date

2011

Abstract

Analysis of time-resolved anisotropy of transient absorption enabled determination of room temperature ground and excited state rate constants for intramolecular double hydrogen transfer in two similar porphycenes, one of them with symmetric and the other, with asymmetric character of a double minimum potential for hydrogen motion. The perturbation preserves a quasi-symmetric minimum in S0, but the rate decreases approximately two times. In S1, the perturbed potential becomes strongly asymmetric, and the downhill hydrogen transfer occurs with a rate higher than that observed for a symmetrical compound.

UNIGE affiliation entities

Citation (ISO format)

FITA, Piotr et al. Ground and Excited State Double Hydrogen Transfer in Symmetric and Asymmetric Potentials: Comparison of 2,7,12,17-Tetra-n-propylporphycene with 9-Acetoxy-2,7,12,17-tetra-n-propylporphycene. In: Chemistry, 2011, vol. 17, n° 13, p. 3672–3678. doi: 10.1002/chem.201002931

Main files (1)

Article (Published version)

Identifiers

Journal ISSN

0947-6539
717views
0downloads

Technical informations

Creation

08/04/2011 08:14:00

First validation

08/04/2011 08:14:00

Update

14/03/2023 16:15:04

Status update

14/03/2023 16:15:04

Last indexation

29/10/2024 18:02:26
All rights reserved by Archive ouverte UNIGE and the University of Geneva
OpenAIRE Indexed & Validated