Issue 19, 2013
From the journal:

Physical Chemistry Chemical Physics

The lifetime and efficiency of triplet–triplet fluorescence from the excited state of a TMM biradical determined using transient emission spectroscopy by two-color two-laser flash photolysis†‡

Yasunori Matsui,a   Daisuke Kawahara,b   Eisuke Ohtaac  and  Hiroshi Ikeda*ac  

* Corresponding authors

a Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
E-mail: ikeda@chem.osakafu-u.ac.jp

b Department of Applied Chemistry, School of Engineering, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan

c The Research Institute for Molecular Electronic Devices, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan

Abstract

The single laser flash photolysis (FP) of 2-(4-benzoylphenyl)-2-phenyl-1-methylenecyclopropane gave rise to a ground state trimethylenemethane (TMM) biradical with absorption bands at 362 and 545 nm and an excited state of this biradical that displays triplet–triplet fluorescence at 580 nm. The excited biradical is likely formed via an expected two-photon process as well as an unexpected one-photon process. The fluorescence quantum yield of the excited biradical, 0.021, was successfully determined by employing a two-color two-laser FP technique.

Graphical abstract: The lifetime and efficiency of triplet–triplet fluorescence from the excited state of a TMM biradical determined using transient emission spectroscopy by two-color two-laser flash photolysis

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Article information

DOI
https://doi.org/10.1039/C3CP50581B
Article type
Communication
Submitted
07 Feb 2013
Accepted
25 Mar 2013
First published
25 Mar 2013

Phys. Chem. Chem. Phys., 2013,15, 7064-7069

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The lifetime and efficiency of triplet–triplet fluorescence from the excited state of a TMM biradical determined using transient emission spectroscopy by two-color two-laser flash photolysis

Y. Matsui, D. Kawahara, E. Ohta and H. Ikeda, Phys. Chem. Chem. Phys., 2013, 15, 7064 DOI: 10.1039/C3CP50581B

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