2001 Fiscal Year Final Research Report Summary
Formation of uniform size ultra-fine metal particles using reverse micelles and self-organization of two-dimensional arrays
| Project/Area Number |
12555213
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
化学工学一般
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
ADACHI Motonari Kyoto University, Institute of Advanced Energy, Lecturer, エネルギー理工学研究所, 講師 (50027140)
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| Co-Investigator(Kenkyū-buntansha) |
SOTO Yasuo Kyoto University, Institute of Advanced Energy, Instructor, エネルギー理工学研究所, 助手 (10093246)
SUZUKI Kiyoshi Fukui University, Engineering, Instructor, 工学部, 助手 (30283162)
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| Project Period (FY) |
2000 – 2001
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| Keywords | ultra fine paiticles / two-dimensional array / nano-wires / network structure / didodeeyl dimetlylammouiume bromide / LB measurement / conomtration of reducing agent / gold particles |
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| Research Abstract |
1. Formation of uniform size ultra-fine particles
Formation of uniform size ultra-fine particles was achieved using reverse micelles composed of di-dodecyldimethylammonium bromide (DDAB). The size of ultra-fine particles can be controlled by changing the concentration of metal ions which were solubilized into the water pool of the reverse micelles. DDAB reverse micellar system was superior than the reverse micellar system composed of di-oleylphosphate system for the formation of uniform size ultra-fine particles.
2. Two-dimensional array of ultra-fine particles
The effect of surface modification of fine particles on π-A relationship was measured using silica particles. Uniform dispersion of silica particles was achieved by spreading silica particles dissolved in chloroform, and two-dimensional array of silica particles on the hydrophobized glass plate was attained when the surface pressure exceeded the pressure corresponding to the closed pack state. Two-dimensional array of nano-size gold particles was achieved by the following method. The TEM mesh was brought parallel to the surface of the trough by hand. The surface of the TEM mesh was briefly contacted with the particle layer on the trough and lifted off. We could get two-dimensional array of gold particles in a wide range area.
3. Nano-wires and network structure formation of gold particles
Nano-wires and network structure composed of these nanowires were successfully synthesized by controlling the concentration of reducing agent in the formation process of nano-size gold particles in the aqueous phase. The network structure covered two-dimensional space uniformly.
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