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How do molecular interactions affect fluorescence behavior of AIEgens in solution and aggregate states? 被引量:2

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摘要 Molecular interactions are crucial in diverse fields of protein folding,material science,nanotechnology,and life origins.Although mounting experimental research controls luminescent behavior by adjusting molecular interactions in light-emitting materials,it remains elusive to correlate microscopic molecular interactions with macroscopic luminescent behavior directly.Here,we synthesized three red luminogens with subtle structural variation and investigated the influence of molecular interactions on their luminescent behavior in solution and aggregate states.Our results indicate that strongπ-πand D-A interactions in both dilute solution(between luminogen and solvent molecules)and aggregate(between luminogens)states cause the redshift in emission,while weak interactions(e.g.,Van der Waals,C–H…π,and C–H…F interactions)enhance the quantum yield.This work provides a thoughtful investigation into the complicated influence of various molecular interactions on luminescent behavior.
出处 《Science China Chemistry》 SCIE EI CSCD 2022年第1期135-144,共10页 中国科学(化学英文版)
基金 supported by the National Natural Science Foundation of China(21788102,52003228) the Innovation and Technology Commission(ITC-CNERC14SC01) the Research Grants Council of Hong Kong(16307020,C6009-17G,C6014-20W,and N-HKUST609/19) the Natural Science Foundation of Guangdong Province(2019B121205012)。
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