Fig. 1: Oligoynes and their optoelectronic properties. | Nature Communications

Fig. 1: Oligoynes and their optoelectronic properties.

From: Optical gap and fundamental gap of oligoynes and carbyne

Fig. 1

a Chemical structures of the C2-symmetric glycosylated oligoynes Glu[n], as well as the D3-symmetric oligoynes Tr*[n] featuring triarylmethyl endcapping groups. b, c Graphical representations of the symmetry arguments for the electronic transitions and their respective consequences for the optical gap Eopt and the fundamental gap Eg for b polyyne (Dh) as well as c typical oligoynes R3C–(C ≡ C)n–CR3 (with the ionization potential IP, the electron affinity EA, the S0 → Sn transition (strong), and the electron-hole pair binding energy EB)45.

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