Preparation and Characterization of Thiolate-Protected Gold Nanoparticles Using Modified One-Phase Method 


Vol. 61,  No. 4, pp. 191-196, Aug.  2017
10.5012/jkcs.2017.61.4.191


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  Abstract

앞선 연구에서 TP(Thiolate-Protected)-나노은의 합성 시 초기에 형성되는 티올화 은 층간화합물의 형성을 막기 위하여 에 탄올에 녹아있는 NaBH4와 티올에 AgNO3를 첨가하는 개선된 단일상 합성법을 보고하였다. 본 연구에서는 이 합성법을 보다 일 반화하기 위하여 TP-나노금과 나노백금의 합성에 적용하였다. 합성된 생성물의 나노크기, 형상 및 금속에 부착된 티올의 배열 은 UV-vis. 스펙트럼, 투과 전자 현미경 사진, X-선 회절 패턴 및 적외선 분광 스펙트럼을 이용하여 규명 하였다. TP-나노금과 나 노백금은 구형 및 타원형의 형태를 하고 있으며 입자크기는 각각 약 3~7 nm와 약 2 nm 이하로 나타나고 있다. 한편 TP-나노금 의 표면을 감싸는 옥탄티올 음이온의 메틸렌 사슬 [-(CH2)7-]의 메틸렌 배향은 trans임을 보여주고 있다. One-phase method to prevent the initial formation of Ag(I) thiolate layered materal from the mixture of AgNO3 and thiols was previously developed to generate TP (Thiolate-Protected)-nanosilver. In this modified method, AgNO3 is added to the mixtures of NaBH4 and thiols in ethanol. This method was so successful that it was applied to synthesize TP-nanogold and nanoplatinum. The synthesis and characterization of these nanoparticles by ultraviolet-visible (UV-vis) absorption spectra, transmission electron microscopy (TEM) pictures, X-ray powder differaction (XRD) patterns and infrared(IR) spectra are described. The results show that colloidal nanoparticles are spherical or oval shape and the mean sizes for TP-nanogold and nanoplatinum are about 3~7 nm and below 2 nm, respectively. The conformation of polymethylene [-(CH2)7-] sequence in octanethiolate attached to nanogold was elucidated as trans.

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  Cite this article

[IEEE Style]

J. Park and Y. Kim, "Preparation and Characterization of Thiolate-Protected Gold Nanoparticles Using Modified One-Phase Method," Journal of the Korean Chemical Society, vol. 61, no. 4, pp. 191-196, 2017. DOI: 10.5012/jkcs.2017.61.4.191.

[ACM Style]

Jisu Park and Youhyuk Kim. 2017. Preparation and Characterization of Thiolate-Protected Gold Nanoparticles Using Modified One-Phase Method. Journal of the Korean Chemical Society, 61, 4, (2017), 191-196. DOI: 10.5012/jkcs.2017.61.4.191.

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