Related Experiment Video
Updated: Jul 17, 2026

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes
Published on: May 26, 2014
[Studies of benzoic acid and its methyl substitutes by using laser flash photolysis]
Hong-wei Zhao1, Wen-feng Wang, Si-de Yao
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
Abstract:
In the present paper the photo-ionization and properties of excited state of benzoic acid and its methyl substitutes were studied using 248 nm laser flash photolysis. The quantum yields of hydrated electrons produced from photo-ionization, the lifetime of excited triplet, and the self quenching rate constants were also determined. It is shown that there isn't significant effect of different position of methyl residue at benzene ring on its excited triplet. The resonant excitation of triplet of benzoic acid was explored by the use of two-steps laser flash photolysis. The possible upper excited state and radical involved in the processes were guessed.
More Related Videos
06:16MALDI-ToF MS Method for the Characterization of Synthetic Polymers with Varying Dispersity and End Groups
Published on: October 3, 2025
06:56Characterization of Synthetic Polymers via Matrix Assisted Laser Desorption Ionization Time of Flight (MALDI-TOF) Mass Spectrometry
Published on: June 10, 2018
Related Concept Videos
NMR Spectroscopy of Benzene Derivatives
Reactions at the Benzylic Position: Halogenation
Mass Spectrometry: Aromatic Compound Fragmentation
Nucleophilic Aromatic Substitution: Elimination–Addition
Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene
Electrophilic Aromatic Substitution: Chlorination and Bromination of Benzene