Biomolecules which can be optically aligned

[maNoFchangE]

So, I am required to find an example of biomolecules which can be aligned using laser. I guess one requirement of that is that the molecules must have non-zero permanent dipole moment. But I don't know where I can find a list of biomolecules along with their dipole moment. Can someone help me with this?

 

[jedishrfu]

I searched for dipole moments of molecules and found this example. There were other sites as well so try a search your self.

http://www.vias.org/genchem/dipole_moment_table.html

 

[DrClaude]

Apart from completely symmetric molecules, which will be quite rare, any biological molecule will have a permanent dipole moment.

I don't know what you would count as a biological molecule, but you can have a look at http://journals.aps.org/rmp/abstract/10.1103/RevModPhys.75.543

 

[maNoFchangE]

After reading some materials on molecular alignment, it seems that I was a bit mistaken about the alignability of molecules. Previously I thought that only molecules with non-zero permanent dipole moment can be aligned, but apparently aligning is related to coupling between several rotational states of the molecule.