science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2019

Substance: toluene					Other Names: methylbenzene

Formula: C6H5CH3					CAS-No.: 108-88-3

Study: UV absorption spectroscopy

                
Authors: C.S. Burton,  W.A. Noyes, Jr.

Title: Electronic energy relaxation in toluene vapor

Journal/Source: J. Chem. Phys., 49, 1705-1714, (1968); DOI:10.1063/1.1670297


Data: table, diagram

EnergyWavelength range: 236 - 315 nm

Resolution: 

Temperature: 296 K

Temperature dependence: no

Pressure/Concentration:

Phase: vapor

pH:


Comments: Fluorescence and crossover to the triplet state are the only important relaxation paths for 
toluene excited to the lowest vibrational level of the first singlet state. The fluorescent yield at 2668Å 
is 0.30 ± 0.07 and this is zero at 2400 Å. The triplet yield (Cundall method) is 0.70 ± 0.03 at 2668 Å and 
is lower at shorter wavelengths.

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