A versatile approach for coating oxidic surfaces with a range of nanoparticulate materials
A versatile approach for coating oxidic surfaces with a range of nanoparticulate materials
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DOI：
10.1039/c2tc00863g
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发表时间：
2013-01
影响因子：
6.4
通讯作者：
J. Poppe;S. Gabriel;L. Liebscher;S. Hickey;A. Eychmüller
中科院分区：
文献类型：
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作者：
J. Poppe;S. Gabriel;L. Liebscher;S. Hickey;A. Eychmüller
介绍了一种通用而有效的方法，通过该方法可以将多种纳米颗粒材料附着在各种氧化表面上。通过标准的热注射方法合成了纳米晶(PbS，CdSe，CdSe@CDS核壳结构，Au)后，稳定的配体被交换到3-巯丙基三甲氧基硅烷(MPTMS)。用傅里叶变换红外光谱和透射电子显微镜观察了配体交换情况。然后将修饰后的纳米晶应用于不同的氧化衬底，得到均匀致密的颗粒膜。随后，通过电化学测量和扫描电子显微镜成像的方法与常用的沉积方法进行了比较，发现这种涂层方法在粒子沉积效率上有很大的优势。通过在硅球胶体晶体上沉积一层PbS纳米颗粒来改变其光学性质，进一步验证了该方法的适用性。
A versatile and effective method by which a wide range of nanoparticulate materials can be attached to a variety of oxidic surfaces is presented. After synthesizing the nanocrystals (PbS, CdSe, CdSe@CdS core–shell, Au) via standard hot injection routes, the stabilizing ligands are exchanged to 3-mercatopropyl-trimethoxysilane (MPTMS). The ligand exchange is monitored using FTIR-spectroscopy and transmission electron microscopy (TEM). The modified nanocrystals were then applied to different oxidic substrates, yielding homogeneous and dense particle films. The effectiveness of this coating procedure is subsequently compared with the commonly employed deposition methods by means of electrochemical measurements and scanning electron microscopy imaging and found to be vastly superior in its particle deposition efficiency. The applicability of this methodology is further verified by depositing a layer of PbS nanoparticles onto a silica sphere colloidal crystal to modify its optical properties.