Fig. 2: Influence of intermolecular interactions within cBDP ensembles. | Nature Communications

Fig. 2: Influence of intermolecular interactions within cBDP ensembles.

From: Collective chiroptical activity through the interplay of excitonic and charge-transfer effects in localized plasmonic fields

Fig. 2

a–f Schematic of tuning of surface separation and concentration of cBDP. The cBDP is represented by a red spot, and the DNA backbone is represented by a black arrow. T6 and T30 stand for DNA spacer co-modified on AuNPs and are represented by blue arrows. g–i CD spectra of 7nt (g) and 2nt (h) complexes, and g-factors (i) of 14nt, 7nt, and 2nt complexes with varying surface separations and concentrations of cBDP. j CD enhancement factor and internal ratio of 2nt complexes with varying surface concentrations of cBDP. “Low” refers tocBDP/AuNP molar ratio during synthesis, i.e., ncBDP:nAu = 25:1, “middle” refers to ncBDP:nAu = 50:1, and “high” refers to ncBDP:nAu = 100:1 (see Supplementary Tables 1–3 for details). Co-modification of AuNPs with T30 resulted in the lowest molar ratio. Surface concentration, ρ, is the number of cBDP-DNA per AuNP without a unit. Source data are provided as a Source Data file.

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