Talk:Coronene
From Wikipedia, the free encyclopedia
 |
Coronene is within the scope of WikiProject Chemicals, a daughter project of WikiProject Chemistry, which aims to improve Wikipedia's coverage of chemicals. To participate, help improve this article or visit the project page for details on the project. | ||
|
Article Grading: The article has not been rated for quality and/or importance yet. Please rate the article and then leave comments here to explain the ratings and/or to identify the strengths and weaknesses of the article.. |
|||
[edit] Number of rings
From the picture, it appears to have 7 rings, but one editor changed this to 6. How is this? I suppose you could say that some of the rings only have one double bond, not three, but eliminating these rings would give a total count of 4. Is the ring in the center excluded for some reason?--24.16.148.75 04:09, 9 July 2006 (UTC)
- It says: "six ortho-fused benzene rings" and that is correct. It is more an instruction ("take six rings, fuse them, get coronene"). Obviously the resulting compound has seven rings. Cacycle 12:56, 9 July 2006 (UTC)
[edit] Presence in Titan
According to the article about Titan, what was once thought to be surface condensations of PAH now seems to be something else. Is there coronene in Titan? And how does it cause DNA damage in mammals (and why not in other organisms)? Thanks Abedul69 12:52, 17 May 2007 (UTC)
A use for coronene is scintillation in the blue part of the visible spectrum when illuminated by UV light. Heating a sample of coronene to a little over 200C in a vacuum causes it to sublimate and deposit on cooler objects inside the vacuum chamber (thermal PVD). A CCD photosensor can get a layer of coronene several hundred angstroms thick. This is not thick enough to block visible light to a significant degree, but will fool the CCD into thinking it can see UV light. A spectrometer made with such a coated CCD will have an extended useful spectrum.
Norm Glitz, who does this for a living in www.piacton.com —Preceding unsigned comment added by 65.119.194.193 (talk) 14:38, 5 September 2007 (UTC)
