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中文摘要：
设计合成了具有4个苯基取代的α-吡喃酮衍生物,研究了该化合物在溶液中的稳态光物理过程,以及在四氢呋喃/水混合溶剂中的聚集行为和发光性质.该化合物在良溶剂中几乎没有发光,而形成聚集体后发出明亮的蓝绿色荧光,荧光量子产率达17%,比溶液中增强了253倍.根据化合物的结构和低温荧光实验结果推断,聚集荧光增强主要是聚集体中分子内转动被有效地抑制,非辐射跃迁大幅度减少所致.
英文摘要：
A novel α-pyrone derivative was synthesized.Photophysics and aggregation of the molecule were investigated.The molecule is almost non-emissive in good solvent,but strongly emissive in solid or aggregate state.The aggregate of the molecule shows blue emission and the quantum yield reaches 17%.The emission enhancement is attributed to the restriction of intramolecular rotation in aggregates according to the structure of the molecule and temperature-dependant emission spectra results.
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