NANOTUBES 1 (IMAGE)

Rice University

NANOTUBES 1

Caption

Chemists at Rice University have discovered a second level of fluorescence in single-walled carbon nanotubes. The fluorescence is triggered when oxygen molecules excited into a singlet state interact with nanotubes, prompting excitons to form triplet states that upconvert into fluorescing singlets.

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Illustration by Ching-Wei Lin/Rice University

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