CD Flashcards
1
Q
Intro
A
2
Q
intro 2
A
3
Q
absorbance spectra
A
4
Q
n-pi star
A
5
Q
n-pi star in amides of backbone
A
- alpha helix is low b/c of structure, aa are closer together ( coupling event)
- small contribution by the tails compared to amide contribution
- polarized light also used in fluorescence to test mobility of molecules
6
Q
polarized light
A
In CD only look at electic length
more or less signal depending on dipole of the molecule
7
Q
circular polarized light
A
circular polarized light obtained by overlaying 2 linear waves
8
Q
CD Spec
A
9
Q
spec 2
A
10
Q
spec 3
A
11
Q
spec 4
A
12
Q
spec calc
A
13
Q
calc example
A
14
Q
2° structure prediction
A
double pit is distinctive of alpha H
15
Q
cd of coupled chiral chromophores
A
16
Q
2° pattern
A
17
Q
structural % composition
A
18
Q
problems w far uv structure predictions
A
19
Q
3° structure
A
20
Q
helical movement
A
21
Q
practical consideration
A
depending on [], need to increase path length
