Fig. 3: Construction and intermolecular interactions of cBDP dimers. | Nature Communications

Fig. 3: Construction and intermolecular interactions of cBDP dimers.

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

Fig. 3

a Schematic of DNA templating of cBDP dimers. The cBDP is represented by a red spot and the DNA backbone is represented by a black arrow. The blue curved arrows depict the explored space of the corresponding cBDP molecule. b, c CD spectral evolution (b), maximum absorption wavelength, and CD internal ratio of cBDP dimers (c). d–g Color image plots of TA experiments of cBDP-DNA monomer (d) and D1–D3 (e–g) at the same timescale. The purple color corresponds to the ground state bleaching (GSB) band at ≈504 nm. h DFT calculated charge density distribution map of the cBDP dimer with three different spatial orientations (Supplementary Fig. 39, Supplementary Data 2). The red arrow in Dimer 3 shows apparent intermolecular CT. i Interference of surface localized plasmonic field with intra- and intermolecular CT via altering electronic couplings during electron migration. The red (blue) color indicates the isosurfaces of the wave function with a positive (negative) sign. Source data are provided as a Source Data file.

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