Studying substituent number effects on vibrational energy transfer by time−resolved CARS spectroscopy Xiaosong Liu, Qingxiao Zou, Hui Li, Weilong Liu, Feng Hu and Yanqiang Yang Eur. Phys. J. D, 78 4 (2024) 41 Published online: 08 April 2024 DOI: 10.1140/epjd/s10053-024-00830-w