摘要
报道了一种利用DNA网络为模板原位合成金纳米颗粒的方法。利用AuCl4-阴离子和DNA碱基间的配位作用,使AuCl4-结合到预先制备好的DNA网络模板上,然后还原AuCl4-,在DNA模板上原位合成具有良好分散性的金纳米颗粒。通过在水溶液中以DNA为稳定剂的金纳米颗粒的成功合成,间接证明了DNA网络上合成的颗粒物为金纳米颗粒。原子力显微镜表征说明,DNA网络的疏密程度以及还原时间对金纳米颗粒的尺寸影响甚小,纳米颗粒平均粒径为2～3 nm。报道的表面原位合成金纳米颗粒的方法在纳米电子器件以及电化学催化等领域具有良好的应用前景。
The method for the in situ synthesis of gold nanoparticles using a DNA network as a template was reported. The AuCl4 was bound to the prepared DNA network template based on the coordination interaction between AuCl; and DNA bases, then the reduction of AuCl4 was conducted, and the in situ synthesis of gold nanoparticles with good dispersion on the DNA network template was achieved. The successful synthesis of gold nanoparticles with the DNA as a stabilizer in the aqueous solution indirectly proves that the particles formed on the DNA network are gold nanoparticles. The characterization by atomic force microscopy （AFM） indicates that the DNA network density and reduction time have little effect on the size of gold nanoparticles. The average particle size of gold nanoparticles is 2-3 nm. The reported method for in situ synthesis of gold nanoparticles has good application prospects in the fields of nanoelectronic devices and electrochemical catalysis.
出处
《微纳电子技术》
CAS
北大核心
2013年第8期479-486,493,共9页
Micronanoelectronic Technology
基金
河北省自然科学基金资助项目(B2011201107)
河北大学引进人才科研启动基金资助项目(2009-172)
关键词
金纳米颗粒
DNA网络
原位合成
模板法
原子力显微镜
gold nanoparticles
DNA network
in situ synthesis
template method
atomic force microscopy
