高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

基于多面体低聚倍半硅氧烷的有机无机杂化纳米复合材料作为锌离子荧光传感器的研究

姜维娜,姜海建,周惠,成伟唯   

  1. 南京师范大学泰州学院
  • 收稿日期:2025-08-31 修回日期:2025-10-09 网络首发:2025-10-31 发布日期:2025-10-31
  • 通讯作者: 成伟唯

An organic-inorganic hybrid nanocomposite from polyhedral oligomeric silsesquioxane as a fluorescent sensor for Zn2+ ions

Jiang Weina, Jiang Haijian, Zhou Hui, Cheng Weiwei    

  1. Nanjing Normal University Taizhou College
  • Received:2025-08-31 Revised:2025-10-09 Online First:2025-10-31 Published:2025-10-31
  • Contact: Cheng Weiwei

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摘要： 本研究以水杨醛和多面体笼状倍半硅氧烷（POSS）为原料，设计合成出一种新型的有机-无机杂化的荧光传感器。通过水杨醛与POSS-NH2的反应，得到了具有水杨醛-席夫碱结构的POSS-Sa，并且对其结构进行了红外、紫外、核磁的表征。实验发现，在锌离子（Zn2+）存在时，POSS-Sa的荧光效率显著提高。随着锌离子浓度的增大，POSS-Sa的荧光强度逐渐增强，且在一定的浓度范围内，POSS-Sa的荧光强度与锌离子浓度的浓度呈线性关系，POSS-Sa的荧光强度与锌离子的浓度呈线性关系，工作曲线为y = 10.31x +455.38（R2 = 0.997），线性范围为0.5~50×10-7 mol·L-1，最低检出限为1×10-8 mol·L-1。该传感器对Zn2+具有高选择性和灵敏度，成功应用于食品样品检测，回收率较高，并且具有良好的生物相容性，有望用于食品样品和体外细胞中Zn2+的检测。

关键词: 多面体低聚倍半硅氧烷, 锌离子, 荧光探针, 水杨醛-席夫碱

Abstract: In this study, a novel organic-inorganic hybrid fluorescent sensor was designed and synthesized using salicylaldehyde and polyhedral oligomeric silsesquioxane (POSS) as raw materials. Through the reaction of salicylaldehyde with POSS-NH2, POSS-Sa with a salicylaldehyde-Schiff base structure was obtained, and its structure was characterized by FT-IR, UV-Vis, and NMR spectroscopy. The results revealed that the fluorescence efficiency of POSS-Sa significantly increased in the presence of zinc ions (Zn2+). As the concentration of ZnZn2+ increased, the fluorescence intensity of POSS-Sa gradually enhanced. Within a certain concentration range, the fluorescence intensity exhibited a linear relationship with Zn2＋concentration, following the calibration curve y = 10.31x +455.38（R2 = 0.997）The linear detection range was 0.5–50 × 10-7 mol·L-1, with a detection limit of 1 × 10-8 mol·L-1.This sensor demonstrated high selectivity and sensitivity toward Zn2＋and was successfully applied to the detection of Zn2+in food samples, showing high recovery rates. Additionally, due to its good biocompatibility, the sensor holds potential for Zn2+detection in food samples and in vitro cellular environments.

Key words: Polyhedral oligomeric silsesquioxane (POSS), Zn2+, Fluorescent probe; Salicylaldehyde Schiff

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