Size Controlled Formation of Gold Nanoparticles Using Photochemical Grwoth and Photothermal Size Reduction by 308 nm Laser Pulses

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著者

    • Inasawa Susumu Inasawa Susumu
    • Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
    • Koda Seiichiro Koda Seiichiro
    • Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

抄録

We synthesized gold nanoparticles (mean diameter 8.3 nm, standard deviation 2.7 nm) from tetrachloroaurate complex (AuCl$_{4}^{-}$) solution by 308 nm laser irradiation without the use of any stabilizers. The combination of photochemical particle growth with photothermal particle size reduction by 308 nm laser irradiation resulted in a narrow size distribution. Photothermal size reduction controlled the maximum diameter of gold nanoparticles which existed in the system, and photochemical growth controlled their size distribution. Using this technique, we were able to control the diameter and the size distribution of gold naoparticles. We propose a simple model for estimating the maximum diameter of gold nanoparticles formed in the system by the irradiation of nanosecond laser pulses. The maximum diameter of particles is determined by the competition between heating of a particle by absorbed photon energy and heat dissipation from the particle surface to the surroundings.

収録刊行物

  • Japanese journal of applied physics. Pt. 1, Regular papers & short notes

    Japanese journal of applied physics. Pt. 1, Regular papers & short notes 42(10), 6705-6712, 2003-10-15

    公益社団法人 応用物理学会

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各種コード

  • NII論文ID(NAID)
    10012450056
  • NII書誌ID(NCID)
    AA10457675
  • 本文言語コード
    EN
  • 資料種別
    ART
  • 雑誌種別
    大学紀要
  • ISSN
    0021-4922
  • NDL 記事登録ID
    6712843
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A375
  • データ提供元
    CJP書誌  NDL  J-STAGE  JSAP 
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