On April 29, 2026, Prof. Zheng Junrong from Peking University visited the Institute of New Concept Sensors and Molecular Materials at Shaanxi Normal University and presented a report titled “What Leads to Aggregation-Induced Emission?”

Prof. Zheng’s research focuses on investigating the evolution dynamics of molecular electronic excited states using ultrafast UV-Vis and IR multi-pulse mixing sequences and nonlinear spectroscopic techniques. He has elucidated the mechanism of aggregation-induced emission in styrenes and discovered that the fluorescence of AIE molecules follows Anti-Vavilov’s rule. Building on this mechanism, he further regulated photochemical reactions through mode-selective vibrational excitation and elucidated the rate-determining factors for inter-system crossing.

The session was chaired by Prof. Bian Hongtao. Prof. Fang Yu and more than 30 faculty members and students from the institute attended the event and engaged in discussions with Prof. Zheng.