Abstract In this paper, five boron dipyrromethene dyes were designed with aromatric-amine-cored structure. Their molecular structure and photophysical performance were discussed in detail in various solvents. It was found that these five dyes were highly fluorescent ones in toluene with emission quantum yield higher than 95%. Amplified spontaneous emission (ASE) performance of these fluorescent dyes was then analyzed in toluene. Efficient and promising ASE spectra peaking at ~545 nm were observed for four of these fluorescent dyes with full width at half maximum value of ~5 nm and ASE efficiency up to 9%. It was confirmed that aromatric-amine-cored structure was positive to improve ASE performance. The reason for ASE missing in one of these fluorescent dyes was revealed as the vibrational relaxation of its N–H group. In solvent MeCN, however, this dye showed an interesting phenomenon, emission turn on effect towards Hg(II). Its sensing performance and sensing mechanism were discussed in detail as well. Good linear response and high selectivity were found for both colorimetric sensing and emission turn on sensing.

中文翻译：

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一系列用于放大自发激光发射和发射开启传感的芳香胺核荧光发射器

摘要 本文设计了五种具有芳香胺核结构的硼二吡咯亚甲基染料。在各种溶剂中详细讨论了它们的分子结构和光物理性能。发现这五种染料在甲苯中是高荧光染料，发射量子产率高于95%。然后在甲苯中分析这些荧光染料的放大自发发射 (ASE) 性能。对于这些荧光染料中的四种，观察到峰值在 ~545 nm 的有效且有前景的 ASE 光谱，其半高全宽为 ~5 nm，ASE 效率高达 9%。证实芳香胺核结构对改善ASE性能是积极的。这些荧光染料之一中 ASE 缺失的原因被揭示为其 N-H 基团的振动弛豫。然而，在溶剂 MeCN 中，这种染料显示了一个有趣的现象，发射对 Hg(II) 的影响。还详细讨论了其传感性能和传感机制。对于比色传感和发射开启传感都发现了良好的线性响应和高选择性。