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一个循环金属化Pt(II) -Pt(II) 贝二聚体,在887 nm处发出三重排放

Lequn Yuan¹, Haibo Yao^1,2, Yunjun Shen¹

¹Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, Guangxi, China. zhangyuzhen@gxmzu.edu.cn.

Dalton transactions (Cambridge, England : 2003)

|February 21, 2024

概括

这项研究合成了新的 (II) 复合物,包括贝二元体,表现出明显的光物理性质. 综合体1b通过排放火检测四二蒸汽的潜力.

科学领域:

协调化学协调化学
材料科学材料科学材料科学
光物理学的光学物理学

背景情况:

(II) 复合物因其独特的光发光特性而受到研究.
循环金属联结体和辅助联结体影响金属复合物的光物理行为.
开发用于传感应用的新材料至关重要.

研究的目的:

合成和表征新型循环金属 ((II) 复合物,包括单核和双核结构.
研究这些复合体在固态和聚合物矩阵中的光物理性质 (发射波长,量子产量,寿命).
评估合成复合物的潜力,用于传感应用,特别是对于有机溶剂蒸汽.

主要方法:

单核 (1a) 和双核 (1b,2) (II) 复合物的合成,使用二子 (f,h) 昆素和N,N'-二ylformamidine连接物.
使用NMR光谱,HRMS,元素分析和单晶X射线衍射进行表征.
光物理测量包括发射光谱,量子产量 (Φ) 和固态和PMMA片中的激发状态寿命 (τ).

主要成果:

一种循环金属化Pt(II) 贝二聚合物 (复合物2) 和相关的单核 (1a) 和双核 (1b) 复合物被成功合成和表征.
复合体2在887nm显示近IR辐射,而复合体1a和1b分别在589nm和660nm显示三重辐射.
在PMMA薄膜中,复合体1a在548nm (Φ = 84%, τ = 5.53μs) 和复合体1b在627nm (Φ = 79%, τ = 4.07μs) 发射.
综合体1b在暴露于四二蒸汽时展示了选择性排放灭,表明传感能力.

结论:

合成的 (II) 复合物表现出各种光物理性质,可以根据它们的结构 (单核与双核与二聚体) 调节.
综合体1b显示出有前途的光发光特性和作为有机溶剂蒸汽传感器的应用潜力,特别是四.
进一步的研究可以探索这些复合物的修改,以提高传感性能和更广泛的应用.

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