Issue 4, 2023
From the journal:

Physical Chemistry Chemical Physics

Laser flash photolysis of titanium dioxide suspensions for the evaluation of solvent-mediated radical reactions†

Andrew Hainer,a   Neeraj Joshia  and  Juan C. Scaiano ORCID logo *a  

* Corresponding authors

a Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, ON K1N 6N5, Canada
E-mail: jscaiano@uottawa.ca

Abstract

The chemistry originating from the scavenging of the highly electrophilic hole in TiO2 can be readily monitored using laser flash photolysis techniques. Dilute suspensions are sufficiently transparent in the UV region that long lived signals from reactions of solvent radicals with 1,1-diphenylethylene can be readily monitored. Transient signals originating from hole, electron and trapped radicals are extremely long lived showing stretched exponentials (nanoseconds to milliseconds), adequately described by fractal models.

Graphical abstract: Laser flash photolysis of titanium dioxide suspensions for the evaluation of solvent-mediated radical reactions

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Article information

DOI
https://doi.org/10.1039/D2CP05170B
Article type
Communication
Submitted
03 Nov 2022
Accepted
20 Dec 2022
First published
21 Dec 2022

Phys. Chem. Chem. Phys., 2023,25, 2747-2751

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Laser flash photolysis of titanium dioxide suspensions for the evaluation of solvent-mediated radical reactions

A. Hainer, N. Joshi and J. C. Scaiano, Phys. Chem. Chem. Phys., 2023, 25, 2747 DOI: 10.1039/D2CP05170B

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