Singlet Oxygen: Applications in Biosciences and Nanosciences
Chapter 17: Remote Singlet Oxygen Delivery Strategies
Published:27 Jan 2016
Special Collection: 2016 ebook collection
N. Walalawela and A. Greer, in Singlet Oxygen: Applications in Biosciences and Nanosciences, ed. S. Nonell, C. Flors, S. Nonell, and C. Flors, The Royal Society of Chemistry, 2016, ch. 17, pp. 335-350.
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Techniques developed to understand the delivery of 1O2 are described. This chapter strives to push the idea of 1O2 delivery further by examining two types of delivery—first, the transport of 1O2 as defined by the presence of surrounding physical and chemical quenchers. Nearby oscillators such as solvent O–H bonds quench 1O2 to ground state 3O2 to keep it from venturing far, ∼200 nm. Airborne 1O2, on the other hand, can travel 5000 times further to oxidize compounds and kill bacteria at air/solid and air/liquid interfaces. Secondly, the transport of 1O2 by carrier compounds is described. Singlet oxygenation examples will include endoperoxides and hydroperoxides. For example, the decomposition of naphthalene endoperoxide is a retro-Diels–Alder reaction of “masked” 1O2 for targeted 1O2 delivery possibilities.