Anthracenes, Polyacenes, and Carbon Nanotubes

An investigation into a pentacene-102 reaction was reported in 2007 [63], when 

In 2007, a report on single-walled carbon nanotubes (SWCNTs) described the reaction with singlet oxygen [66]. Purification was simplified due to the contrasting solubility properties of unfunctionalized and oxyfunctionalized SWCNTs, although it was uncertain whether the SWCNT peroxides were formed from a [2 + 2]-cycload-dition, a [2 + 4]-cydoaddition, or both [66]. Subsequent reports found SWCNTs to be of very low chemical reactivity with 102 [67, 68], Rather, SWCNTs were proposed to physically quench singlet oxygen (to convert 02 to 302) with rate constants on the order of 108 M 1 s 3. 

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