Fig. 2. Absorption and emission spectra of oligoynes.
Normalized absorption spectra of a the Tr*[n] and b the Glu[n] series recorded in hexane and acetonitrile, respectively. The insets show the additional bands with weak intensity at wavelengths higher than the longest wavelength absorption maximum (λmain). c Steady-state absorption (solid line), emission (em., dotted line), and excitation (exc., dashed line) spectra in hexane of Tr*[6] (em. λexc = 290 nm; exc. λ = 355 nm), Tr*[8] (em. λexc = 320 nm; exc. λ = 400 nm), and Tr*[10] (em. λexc = 330 nm; exc. λ = 446 nm). Source data are provided as a Source Data file.