Impacts of heteroatom substitution on the excited state dynamics of π-extended helicenes.
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ABSTRACT:
SUBMITTER: Kondo Y
PROVIDER: S-EPMC11320297 | biostudies-literature | 2024 Aug
REPOSITORIES: biostudies-literature
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Impacts of heteroatom substitution on the excited state dynamics of π-extended helicenes.
Kondo Yuto Y Tsutsui Yusuke Y Matsuo Yusuke Y Tanaka Takayuki T Seki Shu S
Nanoscale advances 20240801
Benzo-annulated aza[9]helicene ([9]AH) and thia[9]helicene ([9]TH) were prepared as novel π-extended heterohelicenes. [9]TH showed a quite short fluorescence lifetime of ∼0.3 ns and intense phosphorescence at low temperature that were attributed to its larger spin-orbit coupling and faster intersystem crossing between pseudo-degenerate S<sub>1/2</sub> and triplet states. ...[more]
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