The Ultrafast Photoisomerizations of Rhodopsin and Bathorhodopsin Are Modulated by Bond Length Alternation and HOOP Driven Electronic Effects

Igor Schapiro, Mikhail Nikolaevich Ryazantsev, Luis Manuel Frutos, Nicolas Ferre, Roland Lindh, Massimo Olivucci
Journal of the American Chemical Society, 133 3354-3364 (2011)