一个简单而快速的"打开"光探测器基于双核 Schiff 基对 Zn 2+ 和它的应用在细胞成像和测试条的应用
Jinghui Cheng1, Yi Li1, Zhiye Zhu1
1Key Laboratory of Chemo/Biosensing and Detection of Xuchang, Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Henan Joint International Research Laboratory of Nanomaterials for Energy and Catalysis, College of Chemical and Materials Engineering, Xuchang University, Xuchang 461000, China.
Molecules (Basel, Switzerland)
|January 8, 2025
概括
新的双核希夫基具有可调节的光学特性,并使用光效率有效检测Zn2+. 这些配体为溶液和生物系统中的传感应用提供了增强的灵敏度.
科学领域:
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
背景情况:
- 希夫基是多功能联结体,在催化,传感和材料科学中具有多种应用.
- 双核希夫基提供与其单核对应物相比独特的结构和电子特性.
- 开发用于金属离子检测的选择性和敏感的光探针仍然是一个关键的挑战.
研究的目的:
- 设计和合成具有可调节光学性能的新型双核希夫基.
- 研究这些连接体作为光传感器的潜力,用于Zn2+检测.
- 探索这些传感器在生物系统中的应用.
主要方法:
- 合成和表征双核希夫基的不同胺桥.
- 使用UV-Vis吸收和光发射光谱学的光学性质评估.
- 使用时间依赖密度函数理论 (TD-DFT) 的计算分析.
- 使用激发状态分子内质子转移 (ESIPT) 机制,对Zn2+进行光传感.
- 通过约伯图,FT-IR和H NMR光谱学进行结构确认.
- 在体外和细胞内检测Zn2+.
主要成果:
- 合成的双核希夫基具有可调节的RGB光吸收和发射光谱 (300-700nm).
- 在乙二溶液中达到高光量子效率高达0.84.
- 开发了选择性和快速"启动"的光探头 (bis-Et-SA和bis-Ph-SA) 用于Zn2+检测.
- 证实了Zn2+与希夫基联结体的四面体协调.
- 通过纸质测试和在Hela细胞中成功检测Zn2+.
- 与单核希夫基联体相比,观察到显著增强的敏感性.
结论:
- 设计的双核希夫基具有出色的光学性能,并作为Zn2+的高效光传感器.
- ESIPT属性促进了选择性 Zn 2+ 识别的"启动"光反应.
- 这些传感器在生物成像和环境监测方面显示出实际应用的前景.
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