Blog

Synthesis, Properties, and Crystal Structures of π-Extended Double [6]Helicenes: Contorted Multi-Dimensional Stacking Lattice

Takao Fujikawa, Nobuhiko Mitoma, Atsushi Wakamiya, Akinori Saeki, Yasutomo Segawa, and Kenichiro Itami

Org. Biomol. Chem. 2017, Accepted Manuscript, DOI: 10.1039/C7OB00987A

The synthesis and properties of a new π-extended double [6]helicene 2 and a dithia[6]helicene 3 are described. Compared to the previously reported parent double-helicene molecule 1, the introduction of n-butyl groups successfully improved the solubility, which allowed an experimental investigation into the electronic structure of 2 and 3 by photophysical measurements and cyclic voltammetry. The characteristic two-blade propeller structures of 2 and 3 were unambiguously determined by single-crystal X-ray diffraction analysis. The crystal packing structure of 2 exhibited a contorted two-dimensional stacking, whereby molecules of n-pentane were incorporated in the stacks. Despite the presence of n-butyl groups, 3 formed a unique three-dimensional stacking lattice in the crystal. Time-resolved microwave conductivity measurements revealed that the double helicenes (13) exhibited transient conductivities. An organic field-effect transistor fabricated using 3 was found to function as a p-type transistor.

Related post

  1. Synthesis of Thiophene-Based TAK…
  2. Synthesis of Bioactive Compounds…
  3. Molecular Catalysis for Fulleren…
  4. Regiodivergent Cross-Dehydrogena…
  5. Dehydrogenative Synthesis of 2,2…
  6. Synthesis of Multiply Arylated P…
  7. Nickel-Catalyzed α-Arylation of …
  8. Synthesis, Properties, and Packi…

Twitter@Itami Lab

Itami Lab Facebook

Instagram@Itami Lab

This error message is only visible to WordPress admins

Error: API requests are being delayed. New posts will not be retrieved.

There may be an issue with the Instagram access token that you are using. Your server might also be unable to connect to Instagram at this time.

Error: API requests are being delayed for this account. New posts will not be retrieved.

There may be an issue with the Instagram access token that you are using. Your server might also be unable to connect to Instagram at this time.

Error: No posts found.

Make sure this account has posts available on instagram.com.

Click here to troubleshoot

最近の記事

Flickr@Itamilab

天池先輩からコーヒースープ伴夫妻からのお歳暮です!潤さん、宮村さん、ありがとうございます!!武藤さん、ビールありがとうございます!平賀大都わーいやなさん、あつしさん、ありがとうございます!!だいぶ前だけど、Stripes look #ootdHalloween lookラインを洗う時ですら格好良く。戸谷先生教育実習!imageけいしゅう、誕生日おめでとう!誕生日は英吉家!!3年生に名古屋ぼろ勝ちアピール中!!アリシア卒業おめでとう女子会!
PAGE TOP