The Photochemical Approach to Helicenes

New advances in chiral nanographene chemistry

“…[n]Helicenes are by far the most extensively studied class of chiral nanographenes, with a multitude of new contributions being made since the early works of Lednicer and Newman, 25 Katz, 26 Laarhoven and Prinsen, 27 and Martin, 28 amongst others. Many more recent reviews have been written on the subject of helicenes and their derivatives, covering synthesis, properties and applications [29][30][31][32][33][34] and several focus on particular classes, including multiple helicenes, 35,36 and heterohelicenes. 12,37,38 For the purpose of this review, discussion of [n]helicenes and simple heterohelicenes will be omitted due to their extensive presence in previous literature.…”

A π‐Extended Pentadecabenzo[9]Helicene

“…Recently, the synthesis of π‐extended helicenes with precise nano‐size has been reported and considered to be the impetus for novel tailor‐made chiral graphene materials [4] . Helicenes extended along the helical axis have been developed [5] . To date, the reported highest [ n ]helicene ( n =16) was reported in 2015 [6] .…”

“…[4] Helicenes extended along the helical axis have been developed. [5] To date, the reported highest [n]helicene (n = 16) was reported in 2015. [6] However, examples with full extension perpendicular to the helical axis are still limited.…”