ゾル-ゲル法による擬べ一マイトマトリックスへの長球金ナノ粒子の配向分散

概要

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Pseudoboehmite coating films containing dispersed gold nanoparticles were prepared by sol gel method. A pseudoboehmite sol was prepared by refluxing a mixture of aluminum tri sec butoxide and hydrochloric acid, and then tetrachloroauric acid tetrahydrate was dissolved in the resultant sol. Gel fihns were deposited on slide glass substrates by spin coating, dried at 120℃ , and exposed to hydrazine vapor at room temperature in order to precipitate gold particles in the films. Transmission electron microscopic observation of the coating films revealed precipitation of aligned, elongated gold nanoparticles of aspect ratios of 2 4. The optical absorption due to surface plasma resonance of gold particles, however, did not show any dependence on the direction of polarization, irnplying that the elongated gold particles are aligned only in a microscopic region.
社団法人日本セラミックス協会の論文
1995-12-01