Effect of Premelting on Conductivity of DNA-Lipid Films
Figure 3
Raman spectra
of natural B-DNA (top) and the DNA-lipid complex
at room temperature and at 80°C.
The solid arrows indicate the Raman
peaks unique to the lipid complex. The dotted arrows indicated the peaks
that contain contributions from both DNA molecules and the lipid complex. For detailed annotation of individual Raman bands,
the readers are kindly asked to refer to literature, for example, [8, 18, 19]. The Raman bands corresponding to the lipid-complex did not show heating-induced
shifting while certain DNA bands moved to lower wave numbers. The DNA P symmetric
stretching mode remains at 1092 c throughout the measurements, indicating
that the DNA molecules remains in their B-form without a significant
change in the relative humidity around the molecules.