Biomedical Engineering Reference
In-Depth Information
Figure 1.3
Off-resonance enhancement of CD. (a) Schematics of the
α
-helix-AgNP complex. (b) Theoretical fit of the extinction of an
α
-helix. (c)
Calculated CD spectrum of helix-AgNP complexes, which shows an induced
plasmonic CD band. (d) Schematics of the dye-AuNP hybrid, with different
orientation of the molecular dipole moment with respect to the AuNP,
and corresponding CD spectra. (e) Extinction spectra of dye molecules and
AuNPs. Adapted with permission from Ref. [31]. Copyright 2010, American
Chemical Society.
orientationofnanostructuresisfixedwithrespecttothedirectionof
light propagation. Such cases include, for example, planar NC arrays
covered with chiral molecules [37, 47].
1.2.5
Optical Chirality and Circular Dichroism
Enhancement
The quantity of optical chirality was previously adopted in Ref. [70]
to estimate the enhancement of CD of biomolecular sensing. Optical
