Thia[n]helicenes with long persistent phosphorescence
Zhen Sun,
Wan Xu,
Shuai Qiu
et al.
Abstract:Helicenes with persistent phosphorescence (τp > 600 ms) and strong circular polarization phosphorescence (|glum| ∼ 0.015) were synthesized through the fusion of ortho-fused benzene rings and thieno[2,3-b:3′,2′-d]thiophene (DTT).
Benzo-annulated aza[9]helicene ([9]AH) and thia[9]helicene ([9]TH) were prepared as novel π-extended heterohelicenes. [9]TH showed quite fast fluorescence lifetime ~0.3 ns and intense phosphorescence at low temperature that were attributed to...
Benzo-annulated aza[9]helicene ([9]AH) and thia[9]helicene ([9]TH) were prepared as novel π-extended heterohelicenes. [9]TH showed quite fast fluorescence lifetime ~0.3 ns and intense phosphorescence at low temperature that were attributed to...
A new design concept, tether-entangled conjugated helices (TECHs), is introduced for helical polyaromatic molecules. TECHs consist of a linear polyaromatic ladder backbone and periodically entangling tethers with the same planar...
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