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首页> 外文期刊>Chemistry: A European journal >Synthetic Control of Spectroscopic and Photophysical Properties of Triarylborane Derivatives Having Peripheral Electron-Donating Groups
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Synthetic Control of Spectroscopic and Photophysical Properties of Triarylborane Derivatives Having Peripheral Electron-Donating Groups

机译：具有外围电子键合基团的三芳基硼烷衍生物的光谱和光物理性质的合成控制

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摘要

The spectroscopic and photophysical properties of triarylborane derivatives were controlled by the nature of the triarylborane core (trixylyl- or trianthrylborane) and peripheral electron-donating groups (N,N-diphenylamino or 9H-carbazolyl groups). The triarylborane derivatives with and without the electron-donating groups showed intramolecular charge-transfer absorption/fluorescence transitions between the π orbital of the aryl group (π(aryl)) and the vacant p orbital on the boron atom (p(B), π(aryl)–p(B) CT), and the fluorescence color was tunable from blue to red by the combination of peripheral electron-donating groups and a triarylborane core. Detailed electrochemical, spectroscopic, and photophysical studies of the derivatives, including solvent dependences of the spectroscopic and photophysical properties, demonstrated that the HOMO and LUMO of each derivative were determined primarily by the nature of the peripheral electron-donating group and the triarylborane core, respectively. The effects of solvent polarity on the fluorescence quantum yield and lifetime of the derivatives were also tunable by the choice of the triarylborane core.
机译：三芳基硼烷衍生物的光谱和光物理性质受三芳基硼烷核（三甲苯基或三蒽基硼烷）和外围给电子基团（N，N-二苯氨基或9H-咔唑基）的性质控制。具有和不具有供电子基团的三芳基硼烷衍生物在芳基的π轨道（π（芳基））和硼原子上的空位p轨道（p（B），π）之间显示分子内电荷转移吸收/荧光跃迁（芳基）–p（B）CT），并且通过外围给电子基团和三芳基硼烷核的组合，荧光颜色从蓝色变为红色。衍生物的详细电化学，光谱和光物理研究（包括光谱和光物理性质的溶剂依赖性）表明，每种衍生物的HOMO和LUMO分别由外围给电子基团和三芳基硼烷核的性质决定。溶剂极性对衍生物的荧光量子产率和寿命的影响也可以通过选择三芳基硼烷核来调节。

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