Formation of Needle-like CdS Nanoparticles on DNA Template

Abstract

Abstract: Monolayer of octadecylamine(ODA) and salmon sperm DNAor salmon sperm DNA-Cd complex were studied on air-water interface by π-Aisotherm. After being co-transferred onto substrates by Langmuir-Blodgett technique, atomic force microscope(AFM) measurements show the DNAmolecules are packed into lines in the film, due to the interactions between the ODAand DNAmolecules. By exposing the ODAand DNA-Cd complex LBfilm to H₂S, needle-like CdSnanoparticles were formed along the DNAlines as characterized by transmission electron microscope(TEM). Electron diffraction(ED) image indicates that the so prepared needle-like CdSis a new kind of nanostructured materials.

Key words: DNA, Template synthesis, Needle-like CdS, Nanoparticle

CLC Number:

O614.339

TrendMD:

CHEN Xia, JIN Jian, YANG Wen-Sheng, GUO Zhong-Man, JIANG Lin, YANG Bai-Quan, XU Li, WEI Li, LI Tie-Jin, ZHENG Da-Fang. Formation of Needle-like CdS Nanoparticles on DNA Template[J]. Chem. J. Chinese Universities, 2000, 21(7): 1115.

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Formation of Needle-like CdS Nanoparticles on DNA Template

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