引用本文:
文立群, 吕鉴泉, 吕汉清, 周兴旺, 孙婷荃. 氨基酸对CdTe量子点荧光性质的影响[J]. 物理化学学报,
2008, 24(04): 725-728.
doi:
10.3866/PKU.WHXB20080432
Citation: WEN Li-Qun, LV Jian-Quan, LV Han-Qing, ZHOU Xing-Wang, SUN Ting-Quan. Effect of Amino Acid on the Fluorescence of CdTe Quantum Dots[J]. Acta Physico-Chimica Sinica, 2008, 24(04): 725-728. doi: 10.3866/PKU.WHXB20080432
Citation: WEN Li-Qun, LV Jian-Quan, LV Han-Qing, ZHOU Xing-Wang, SUN Ting-Quan. Effect of Amino Acid on the Fluorescence of CdTe Quantum Dots[J]. Acta Physico-Chimica Sinica, 2008, 24(04): 725-728. doi: 10.3866/PKU.WHXB20080432
氨基酸对CdTe量子点荧光性质的影响
摘要:
以巯基乙酸为稳定剂, 制备了水溶性碲化镉(CdTe)量子点(QDs), 分别考察了pH值和几种氨基酸对CdTe-QDs紫外吸收和荧光的影响. 结果表明, 在不同pH值下, 丙氨酸、丝氨酸、半胱氨酸对CdTe-QDs的荧光有不同的影响, 丙氨酸、丝氨酸使CdTe-QDs荧光发生猝灭现象, 而半胱氨酸在碱性范围内则使CdTe-QDs的荧光明显增强, 说明氨基酸对量子点存在不同的作用机制.
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关键词:
- CdTe量子点; 氨基酸; 荧光
English
Effect of Amino Acid on the Fluorescence of CdTe Quantum Dots
Abstract:
Water-soluble CdTe quantum dots (GdTe-Qs) were prepared using mercaptocarboxylic acid as stabilizer, and effects of pH and amino acids on fluorescence of CdTe-QDs were investigated. The results revealed that the fluorescence of the CdTe-QDs varied with the change of pH, and the alanine and serine could quench the fluorescence while cysteine enhanced the fluorescence.
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Key words:
- CdTe quantum dots; Amino acid; Fluorescence
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