posted on 2018-03-28, 17:36authored byYining Ji, Daniel A. DiRocco, Cynthia M. Hong, Michael K. Wismer, Mikhail Reibarkh
A simplified approach
to quantum yield (ϕ) measurement using in situ LED NMR spectroscopy
has been developed. The utility and performance of NMR actinometry
has been demonstrated for the well-known chemical actinometers potassium
ferrioxalate and o-nitrobenzaldehyde. A novel NMR-friendly
actinometer, 2,4-dinitrobenzaldehyde, has been introduced for both
365 and 440 nm wavelengths. The method has been utilized successfully
to measure the quantum yield of several recently published photochemical
reactions.