Photochemistry and photophysics of glycolaldehyde in solution

Conference · Tue Feb 03 23:00:00 EST 1987 · J. Am. Chem. Soc.; (United States)

OSTI ID:6645280

Beeby, A; Hj Mohammed, D B; Sodeau, J R

The end products for the photolysis of glycolaldehyde in aqueous solution have been monitored by mass spectrometric, FTIR, /sup 1/H NMR, /sup 13/C NMR, and UV-vis spectroscopic techniques. Methanol, carbon monoxide, formaldehyde, and malonaldehyde are the major photochemical products and are in accord with earlier CIDNP studies. The quantum yields of fluorescence for glycolaldehyde and a series of related alkanal compounds in solution are reported for the first time; they are all in the range Phi/sub F/ = 0.71-0.84 x 10/sup -3/. The singlet state decay kinetics for glycolaldehyde and ethanol were followed in more detail by measurement of their fluorescence lifetimes in solution with use of a synchrotron radiation source. The results may be explained in terms of emission from free and hydrogen-bonded singlet n..pi..* excited states of the carbonyl compounds in water.

• Research Organization: Univ. of East Anglia, Norwich, England
• OSTI ID: 6645280
• Journal Information: J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 109:3; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ALCOHOLS
ALDEHYDES
AQUEOUS SOLUTIONS
CARBON 13
CARBON ISOTOPES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
DISPERSIONS
EFFICIENCY
ELEMENTS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FLUORESCENCE
FOURIER TRANSFORM SPECTROMETERS
GLYCOLS
HYDROGEN
HYDROXY COMPOUNDS
INFORMATION
INFRARED SPECTRA
ISOTOPES
KINETICS
LIGHT NUCLEI
LUMINESCENCE
MAGNETIC RESONANCE
MASS SPECTROSCOPY
MEASURING INSTRUMENTS
MIXTURES
NONMETALS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTOLYSIS
QUANTUM EFFICIENCY
REACTION KINETICS
RESONANCE
SOLUTIONS
SPECTRA
SPECTROMETERS
SPECTROSCOPY
STABLE ISOTOPES
ULTRAVIOLET SPECTRA