science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2022

Substance: oxygen					Other Names:

Formula: O2						CAS-No.: 7782-44-7	PubChem: CID 977

Study: nir absorption spectrum, absorption coefficients

                
Authors: M. Bregnhoj, C.K. McLoughlin, T. Breitenbach, P.R. Ogilby

Title: Absorption Spectra of Molecular Oxygen in Liquid Organic Solvents at Atmospheric Pressure 

Journal/Source: J. Phys. Chem. A, 126, 23, 3839-3845, (2022); https://doi.org/10.1021/acs.jpca.2c03053


Data: diagram, table

Energy/Wavelength range: ~ 750 - 780 nm

Resolution: 

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration: oxygen saturated

Phase: solution (benzene, toluene, chlorobenzene, bromobenzene, iodobenzene)

pH


Comments: Spectra and absorption coefficients of the forbidden 765 nm transition of molecular oxygen dissolved in organic solvents at atmospheric 
pressure were recorded. The absorption coefficient at the band maximum in iodobenzene, (28.9 ± 3.3) x 10–3 M–1 cm–1, is approximately 
21 times larger than that in benzene, (1.4 ± 0.1) x 10–3 M–1 cm–1.