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中文摘要：
以可再生的葡萄糖晶体为原料，采用一步水热法制备了粒径均一、溶剂分散性较好、具有激发依赖和上转换性能的水溶性荧光碳量子点（Water—soluble Carbon Dots，W—CDs）。考察了葡萄糖溶液的浓度和反应时间对W—CDs荧光性能的影响，借助高分辨透射电子显微镜、红外光谱、紫外-可见吸收光谱和荧光光谱分析优选出合成W-CDs的参数，并研究了其荧光性能。结果表明：当葡萄糖溶液浓度为25mmol／L，水热反应时间8h，反应温度为180℃时，制备了发蓝绿色光的W-CDs，粒径为5nm左右，荧光量子产率为1．13％，且具有上转换荧光现象和PH响应性。
英文摘要：
Fluorescent water-soluble carbon dots（W-CDs） were prepared by one-step hydrothermal method with aqueous glucose solution as raw material. The influence of glucose solution concentration and reaction time was explored. The structures of W-CDs were characterized with high-resolution transmission electron microscopy and Fourier transform infrared spectrometry, and the fluorescent properties of W-CDs were measured by ultraviolet and visible spectroscopy and photoluminescence spectroscopy. The results show that the optimal hydrothermal synthesis conditions for obtaining W-CDs were glucose concentration 25 mmol/L, reaction time 8 h , and reaction temperature 180℃. The as-prepared W-CDs emitted the blue-green fluorescence with quantum yield of 1.13% and had pH-sensitive feature.
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