State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, People's Republic of China.
ACS Nano. 2012 Jan 24;6(1):400-9. doi: 10.1021/nn2046373. Epub 2011 Dec 29.
We propose an ingenious method for synthesizing cross-linked hollow fluorescent carbon nanoparticles (HFCNs) with green emission by simply mixing acetic acid, water, and diphosphorus pentoxide. This is an automatic method without external heat treatment to rapidly produce large quantities of HFCNs, in contrast to other syntheses of fluorescent carbon nanoparticles that required high temperature, complicated operations, or long reaction times. Characterizations of HFCNs through high-resolution transmission electron microscopy, infrared/Raman spectroscopy, and X-ray diffraction indicate that abundant small oxygenous graphite domains existed and endowed the HFCNs with fluorescent properties. After simple post-treatments, the cross-linked HFCNs can be used for cell-imaging applications. Compared with traditional dyes and CdTe quantum dots, HFCNs are the superior fluorescent bioimaging agent according to their low toxicity, stability, and resistance to photobleaching. The HFCNs were also applied to watermark ink and fluorescent powder, showing their promising potentials for further wide usage.
我们提出了一种巧妙的方法，通过简单地混合乙酸、水和五氧化二磷来合成具有绿色发射的交联中空荧光碳纳米粒子（HFCN）。与其他需要高温、复杂操作或长反应时间的荧光碳纳米粒子合成方法相比，这是一种自动方法，无需外部热处理即可快速大量生产 HFCN。通过高分辨率透射电子显微镜、红外/Raman 光谱和 X 射线衍射对 HFCN 的表征表明，存在丰富的小含氧石墨畴，赋予 HFCN 荧光性质。经过简单的后处理，交联的 HFCN 可用于细胞成像应用。与传统染料和 CdTe 量子点相比，HFCN 是一种优越的荧光生物成像剂，因为它们具有低毒性、稳定性和抗光漂白性。HFCN 还应用于水印油墨和荧光粉，显示出它们具有进一步广泛应用的潜力。
