It was also shown that the hindered rotation of 4-phenyl in the molecule of 2, 4, 6-triphenyl pyrylium salt is unfavorable to its fluorescence emission.
实验结果还表明，4 -位取代苯基旋转受阻对化合物的荧光发射不利。
Pyrylium salts are a type of organic aromatic compounds with one or more six-numbered oxoheterocyclic cations, which are practically valuable owing to their peculiar chemical and physical properties.
吡喃盐是指含有六元氧杂环正离子结构的有机芳香化合物，因其独特的化学及物理特性而具有非常广泛的应用价值。
Pyrylium salts are a type of organic aromatic compounds with one or more six-numbered oxoheterocyclic cations, which are practically valuable owing to their peculiar chemical and physical properties.
吡喃盐是指含有六元氧杂环正离子结构的有机芳香化合物，因其独特的化学及物理特性而具有非常广泛的应用价值。
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