Dynamic Force Microscopy

Discussions on general chemistry and chemical engineering, organic chemistry, analytical chemistry, etc.

Dynamic Force Microscopy

Postby zetreque on January 10th, 2016, 9:28 pm 

Watching this

Nanoscale Machines: Building the Future with Molecules
https://youtu.be/NJW3KfjM2aw?t=43m55s

and I find it curious about "seeing hydrogen bonds". He tries to make it clear that we are not seeing hydrogen bonds and yet we are. It's a bit confusing.

The first example he shows (he says is carbon monoxide but is confused in his slides because it's pentacene) appears to show hydrogen bonds. But the other example he uses shows "where molecules are closest to on another"

What I don't understand is why he says it's not a hydrogen bond in the first example?

Dynamic Force Microscopy looks like it detects electron density? Which is the "force" right? So in the carbon chain we are seeing the electrons reaching out to the hydrogens I would think, and in the other example we see electrons reaching out to the other molecules. These are bonds. We are not seeing the bonds, but seeing the electrons at the bonds so aren't see seeing the hydrogen bonds?
User avatar
zetreque
Forum Moderator
 
Posts: 3640
Joined: 30 Dec 2007
Location: Paradise being lost to humanity
Blog: View Blog (3)


Return to Chemistry

Who is online

Users browsing this forum: No registered users and 5 guests