利用反相微乳液体系制备出粒径均一的中空氧化硅纳米粒(SHN),以此为基础,再利用水热法通过自组装合成了碳点-中空氧化硅纳米粒复合材料(CD-SHN).采用高分辨透射电子显微镜(HRTEM)和场发射扫描电子显微镜(FESEM)对其结构进行了表征,结果显示SHN尺寸为30～40 nm,壳厚约为10 nm,在此基础上合成出具有和海葵类似结构的CD-SHN,尺寸约为1μm,并且,在水相中具有良好的分散性.海葵状CD-SHN既具有激发波长依赖的多色荧光发射性能,又具有良好的光稳定性,其最大激发及发射波长分别位于360和435 nm附近,经40W白炽灯照射60 min,其荧光强度仍可保持97％.该材料的制备过程条件温和,其原材料生物相容性良好,在生物造影方面具有潜在的优势.
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