Photochemical Synthesis of Silver Colloids Stabilized with Poly(N-vinylpyrrolidone) in Alcohol-chloroform Mixing Solvent

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概要

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• Silver nanoparticle colloids were photochemically synthesized by UV-irradiation of silver nitrate in alcohol-chloroform mixing system using poly(N-vinylpyrrolidone) as stabilizer. The photochemical formation process of the silver nanoparticles was investigated by UV-Vis absorption spectrum measurements. A continuous surface plasma peak evolution from 435nm to 900nm was observed and accompanied by the appearance of additional peaks at short wavelength. The spectral evolution can be attributed to the gradual formation of anisotropic silver nanoparticles, as demonstrated TEM measurements where triangle silver nanoparticles were observed. Similar photochemical phenomena were not observed for AgNO_3-PVP-alcohol mixing system and AgNO_3-alcohol-chloroform mixing system, where chloroform and PVP is absent, respectively. A photochemical reaction mechanism is here proposed in which the solvent of chloroform plays an important role. Chloroform, a photosensitive molecule of CHCl_3, released Cl^- ions under UV-irradiation, followed by formation of AgCl clusters as reactive intermediate which were degraded photochemically and induced the growth of anisotropic silver nanoparticles.

• 社団法人電子情報通信学会の論文
• 2005-01-14

著者

• OCHIAI Shizuyasu

  Department of Electrical Engineering, Aichi Institute of Technology

• KOJIMA Kenzo

  Department of Electrical Engineering, Aichi Institute of Technology

• OHASHI Asao

  Department of Electrical Engineering, Aichi Institute of Technology

• Kojima Kenzo

  Department Of Electrical Engineering Aichi Institute Of Technology

• Ochiai Shizuyasu

  Dep. Of Electrical Engineering Aichi Inst. Of Technol.

• Ochiai Shizuyasu

  Aichi Inst. Technol. Aichi Jpn

• Ohashi A

  Department Of Electrical Engineering Aichi Institute Of Technology

• Ohashi Asao

  Department Of Electrical Engineering Aichi Institute Of Technology

• Kojima K

  Department Of Electrical Engineering Aichi Institute Of Technology

• MAEDA Akinori

  Department of Hematology and Clinical Immunology, Kobe City General Hospital

• Maeda A

  Department Of Electronic Engineering Faculty Of Engineering Aichi Institute Of Technology

• Maeda Akinori

  Department Of Electrical Engineering Aichi Institute Of Technology

• Zhao Ying

  Institute Of Photoelectronics Nankai University

• 〓 穎

  中国天津南〓大学光〓子所

• ZHANG Yu

  Department of Electronic Engineering, Tsinghua National Laboratory for Information Science and Techn

• Zhang Yu

  Changchun Institute Of Optics Fine Mechanics And Physics Chinese Academy Of Sciences.

• Maeda A

  Sanyo Electric Co. Ltd. Osaka Jpn

• UCHIDA Yoshiyuki

  Department of Electrical Engineering, Aichi Institute of Technology, Toyota

• Ochiai Shizuyasu

  Department Of Electrical Engineering Aichi Institute Of Technology

• Zhang Y

  Changchun Institute Of Optics Fine Mechanics And Physics Chinese Academy Of Sciences.

• Uchida Yoshiyuki

  Department Of Electrical Engineering Aichi Institute Of Technology Toyota

• Uchida Y

  Department Of Electrical Engineering Aichi Institute Of Technology Toyota

• Zhang Yu

  Department Of Chemistry And Pharmacy Jiamusi University

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