分子内力
罗丹明
发光
聚集诱导发射
化学
材料科学
纳米技术
化学物理
光化学
分子
荧光
立体化学
物理
光电子学
有机化学
光学
作者
Linlin Yang,Haoran Wang,Jianyu Zhang,Bo Wu,Qiyao Li,Jieying Chen,A-Ling Tang,Jacky W. Y. Lam,Zheng Zhao,Song Yang,Ben Zhong Tang
标识
DOI:10.1038/s41467-024-45271-6
摘要
Abstract The bottom-up molecular science research paradigm has greatly propelled the advancement of materials science. However, some organic molecules can exhibit markedly different properties upon aggregation. Understanding the emergence of these properties and structure-property relationship has become a new research hotspot. In this work, by taking the unique closed-form rhodamines-based aggregation-induced emission (AIE) system as model compounds, we investigated their luminescent properties and the underlying mechanism deeply from a top-down viewpoint. Interestingly, the closed-form rhodamine-based AIE system did not display the expected emission behavior under high-viscosity or low-temperature conditions. Alternatively, we finally found that the molecular conformation change upon aggregation induced intramolecular charge transfer emission and played a significant role for the AIE phenomenon of these closed-form rhodamine derivatives. The application of these closed-form rhodamine-based AIE probe in food spoilage detection was also explored.
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