Extended Data Fig. 1: Spectra used to obtain the D-A distance dependence presented in Fig. 2i of the main manuscript. | Nature Chemistry

Extended Data Fig. 1: Spectra used to obtain the D-A distance dependence presented in Fig. 2i of the main manuscript.

From: Energy funnelling within multichromophore architectures monitored with subnanometre resolution

Extended Data Fig. 1

a, STM image of the H2Pc–PdPc dimer, I = 5 pA, V = − 2.5 V. Scale bar 1 nm. b, RETeff values calculated from the spectra in (c). The horizontal error bars consider a 5 % error in the estimation of the molecule positions. The vertical error bars are smaller than the symbol size as the statistical error on the number of photon counts is less than 3 %. c, Normalized STML spectra acquired at positions marked in Fig. 2h, V = − 2.5 V, acquisition time t = 60 s, I = 50 pA (for R = 2.24 nm), I = 100 pA (for R = 1.68, 1.97, 3.2 nm), I = 250 pA (for R = 2.47, 2.72 nm). The spectra were normalized by the plasmonic response of the cavity41 to ensure a fair comparison between the intensities of the molecular emission lines, and scaled to unity. The splits observed in the PdPc spectra correspond to a partial lifting of the \(Q_{{{\rm{Pd}}}_{x}}\) and \(Q_{{{\rm{Pd}}}_{y}}\) degeneracy that seems to depend on details of the adsorption site. A similar effect has been reported previously 21 for H2Pc. RETeff values were estimated by integrating the light emission intensities in the spectral ranges indicated in blue and red. (d) Enlarged view of the H2Pc line displayed in (c).

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