Fig. 2: Photophysical properties and intramolecular through-space conjugation (TSC).
From: Fluorescence mapping of atropisomer populations enabled by through-space conjugation
Temperature-dependent photoluminescence (PL) spectra of a 22-NB, b 11-NB, and c 11-NB-8DMe-anti in 2-Me-THF, c = 10 μM. The inset displays solution photographs captured at room temperature (RT) and 200 K under 300 nm excitation. d The excited-state geometries of these three compounds were analyzed using IGMH (isovalue = 0.018 a. u.) to characterize the interactions between the two naphthalene rings, which are highlighted within red-dashed boxes to visualize their specific locations and features. The colors represent the interaction characteristics and intensities on the isosurface around the critical points, as shown in the color scale. e The relationship between the flexibility of the molecular skeleton and TSC.
