4.8 Article

Thermochemiluminescent peroxide crystals

Journal

NATURE COMMUNICATIONS
Volume 10, Issue -, Pages -

Publisher

NATURE PORTFOLIO
DOI: 10.1038/s41467-019-08816-8

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Funding

  1. New York University Abu Dhabi (NYUAD)

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Chemiluminescence, a process of transduction of energy stored within chemical bonds of ground-state reactants into light via high-energy excited intermediates, is known in solution, but has remained undetected in macroscopic crystalline solids. By detecting thermally induced chemiluminescence from centimeter-size crystals of an organic peroxide here we demonstrate direct transduction of heat into light by thermochemiluminescence of bulk crystals. Heating of crystals of lophine hydroperoxide to similar to 115 degrees C results in detectable emission of blue-green light with maximum at 530 nm with low chemiluminescent quantum yield [(2.1 +/- 0.1) x 10(-7) E mol(-1)]. Spectral comparison of the thermochemiluminescence in the solid state and in solution revealed that the solid-state thermochemiluminescence of lophine peroxide is due to emission from deprotonated lophine. With selected 1,2-dioxetane, endoperoxide and aroyl peroxide we also establish that the thermochemiluminescence is common for crystalline peroxides, with the color of the emitted light varying from blue to green to red.

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