Talk:Helicene
Add topicLatest comment: 10 years ago by Jimw338 in topic Raison d'etre
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Raison d'etre
[edit]Why are these freaks of nature created?? WHat purpose do they serve? The article does not say. Dikke poes 13:55, 6 January 2007 (UTC)
- Perhaps a new section on its applications in the real-world should be started. Venny85 20:34, 6 April 2008 (UTC)
- THese compounds are tremendously optically active. Going through the series you get left and right forms that keep bending light. The apparent rotation may look like 190 degrees when it is in fact 540 degrees. By the time you get to the higher ones, the rotations are over a thousand degree. So there';s interest in the optics industry in their polarization properties. —Preceding unsigned comment added by Fetz the chemist (talk • contribs) 17:25, 3 July 2008 (UTC)
- These compounds are essentially nanosprings that vibrate with a specific frequency of light. An array of them (a hexagonal crystal) would make an extremely high-resolution photodetector, if combined with a material like silicon or graphene. Each spring is only the size of Coronene. 0.92 nm across. [3]Helicene absorbs in UV, [4]-[6] in visible light, and [7]-[n] in infrared. --User:Zuloo37 5:22, 16 September 2014 (UTC)
- A theoretical question: if such a detector could be made with a single chirality, could it function as a polarization detector? (Another answer to "Why are these freaks of nature created" - because we can..) Jimw338 (talk) 23:14, 6 February 2016 (UTC)
Helicine and Circulene
[edit]Although the compounds are clearly related, the rather unrelated names - alphabethacaly they do not show up together - in my point of view, justifies an own lemma for the circulenes.T.vanschaik (talk) 08:46, 6 January 2010 (UTC)
- as wel as for sulflower. T.vanschaik (talk) 20:30, 8 January 2010 (UTC)
- no splitting of article required unless it is getting a big expansion (new content) V8rik (talk) 20:52, 9 January 2010 (UTC)
Although I'm no specialist, it seems inappropriate to include circular (planar?) compounds under a title that clearly implies an helical structure. Regards, Nikevich (talk) 00:56, 14 June 2011 (UTC)
- The circulenes have floated off V8rik (talk) 20:40, 28 December 2011 (UTC)
Added some pictures
[edit]I added pictures for [4]helicene through [16]helicene, and also included [18]helicene. Enjoy. --Zuloo37 05:15, 16 September 2014 (UTC)