Figure 11.

Electronic transition energies of N = 7–23 polyenes in room temperature 2- MTHF (data from Table S2). (1 kK = 10³ cm⁻¹) Data points and lines in blue correspond to absorption measurements, and data points and lines in red are derived from transient absorption measurements. Open circles designate measurements of ¹A_g⁻ state energies and solid circles designate measurement of ¹B_u⁺ states energies. Lines are from quadratic fits (E = A +B/N +C/N²) as explained in the text. Parameters of the fits are presented in Table S3.