Journal of the American Chemical Society p. 857 - 861 (1987)
Update date:2022-08-29
Topics:
Beeby, Andrew
Mohammed, Dahlan Bin Hj.
Sodeau, John R.
The end products for the photolysis of glycolaldehyde in aqueous solution have been monitored by mass spectrometric, FTIR, 1H NMR, 13C 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 ΦF = 0.71-0.84E-3.The singlet state decay kinetics for glycolaldehyde and ethanal 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?* excited states of the carbonyl compounds in water.
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