Monkman, A., Pålsson, L., Higgins, R., Wang, C., Bryce, M., Batsanov, A., & Howard, J. (2002). Protonation and subsequent intramolecular hydrogen bonding as a method to control chain structure and tune luminescence in heteroatomic conjugated polymers. Journal of the American Chemical Society, 124(21), 6049-6055. https://doi.org/10.1021/ja012409%2B