Colloidal carbon spheres and their core/shell structures with noble-metal nanoparticles
Colloidal carbon spheres and their core/shell structures with noble-metal nanoparticles
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DOI：
10.1002/anie.200352386
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发表时间：
2004-01-01
影响因子：
16.6
通讯作者：
Li, YD
中科院分区：
文献类型：
--
作者：
Sun, XM;Li, YD
胶体微球和纳米球一直是人们研究的热点，因为它们的固有性质可以通过改变参数如直径、化学组成、体结构和结晶度进行微调。迄今为止，他们已在药物输送、生物诊断、组合合成和光子带隙晶体（PBG）等领域找到了广泛的应用。[1-3]这些应用的成功在很大程度上取决于具有严格控制的尺寸和表面性质的胶体球的可用性。[1，2]然而，到目前为止，只有无定形二氧化硅和一些胶体聚合物球可以常规制备具有令人满意的窄尺寸分布。[4]制备的胶体纳米粒子和微球通常具有相对惰性的表面，这使得在用作载体或模板之前几乎不可避免地进行表面改性。[3、5]
Colloidal micro-and nanospheres have been of continuous research interest, since their intrinsic properties can be finely tuned by changing parameters such as diameter, chemical composition, bulk structure, and crystallinity. Up to now, they have found a broad range of applications in fields such as drug delivery, biodiagnostics, combinatorial synthesis, and photonic band-gap crystals (PBG).[1–3] The success of these applications strongly depends on the availability of colloidal spheres with tightly controlled size and surface properties.[1, 2] However, until now, only amorphous silica and some colloidal polymer spheres can be routinely prepared with satisfactorily narrow size distributions.[4] As-prepared colloidal nano-and microspheres usually have relatively inert surfaces, which make surface modification almost unavoidable before use as supports or templates.[3, 5]