Synthesis of 2D fluorescent polyaniline derivatives as multifunctional fluorescent chemosensor,Journal of Polymer Science

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Synthesis of 2D fluorescent polyaniline derivatives as multifunctional fluorescent chemosensor
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2022-10-10 , DOI: 10.1002/pol.20220503
Qingyi Lu ₁ , Junning Qian ₁ , Feng Xu ₁ , Guohang He ₁ , Yuwen Liu ₁ , Jiangbin Xia _{1,

2}

Affiliation

Polyaniline (PANI) has been widely studied and applied due to its easy-to-obtain raw materials, excellent electrochemical performance and high environmental stability. Here, we present a general synthetic strategy for preparing two-dimensional (2D) fluorescent PANI derivatives. The double bonds are used as a conjugated spacer between benzene rings in PPED and PPBA. The work breaks through the limitation of PANI derivatives are non-emissive in solutions. The fluorescence quantum yields (Ф_f) of PPED and PPBA are 2.5% and 1.5%, respectively. PPED and PPBA show highly selective and sensitive detection of iron ion (Fe³⁺), copper ion (Cu²⁺) and hydrochloric acid (HCl). It is worth noting that the detection limit of PPED for Fe³⁺ is 35 nM. In addition, the theoretical study indicates that the introduction of double bonds in PPED and PPBA greatly enhances their conjugation extent. The results demonstrate that we provide a powerful method for the preparation of highly sensitive fluorescent chemosensors based on 2D PANI derivatives.

中文翻译：

作为多功能荧光化学传感器的二维荧光聚苯胺衍生物的合成

聚苯胺(PANI)由于其原料易得、电化学性能优异、环境稳定性高等优点，得到了广泛的研究和应用。在这里，我们提出了一种制备二维 (2D) 荧光聚苯胺衍生物的通用合成策略。双键用作 PPED 和 PPBA 中苯环之间的共轭间隔基。该工作突破了聚苯胺衍生物在溶液中不发光的限制。PPED和PPBA的荧光量子产率(Ф _f )分别为2.5%和1.5%。PPED 和 PPBA 显示出对铁离子 (Fe ³⁺ )、铜离子 (Cu ²⁺ ) 和盐酸 (HCl) 的高选择性和灵敏检测。值得注意的是，PPED 对 Fe ^{3+的检测限}为 35 纳米。此外，理论研究表明，在PPED和PPBA中引入双键大大提高了它们的共轭程度。结果表明，我们为制备基于二维聚苯胺衍生物的高灵敏度荧光化学传感器提供了一种有效的方法。

更新日期：2022-10-10

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