石墨相氮化碳纳米片的超高量子产率紫外荧光。
Ultra-high quantum yield ultraviolet fluorescence of graphitic carbon nitride nanosheets.
机构信息
MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, China.
出版信息
Chem Commun (Camb). 2019 Dec 12;55(100):15065-15068. doi: 10.1039/c9cc07448a.
Graphitic carbon nitride (g-CN) nanosheets (CNNs) with an ultra-high quantum yield (80.1%) ultraviolet fluorescence (FL) were prepared. The effects of the lateral size and the polymerization temperature on the optical properties of CNNs have been studied. The ultraviolet FL was proved to have originated from the isolated melem units according to the density functional theory calculation and mass spectra. The obtained CNNs are further used as a pH probe due to the dependence of the FL signal on the pH of the solution.
制备了具有超高量子产率（80.1%）的紫外荧光（FL）的石墨相氮化碳（g-CN）纳米片（CNNs）。研究了横向尺寸和聚合温度对 CNNs 光学性质的影响。根据密度泛函理论计算和质谱证明，紫外 FL 源自孤立的 melem 单元。由于 FL 信号对溶液 pH 值的依赖性，所得的 CNNs 进一步用作 pH 探针。
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