IR-Vis sum-frequency generation circular-dichroism studies on ultra-thin films of chiral molecules.
| Project/Area Number |
14340178
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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 | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | Nagoya University |
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Principal Investigator |
OUCHI Yukio Nagoya University, Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (60194081)
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| Co-Investigator(Kenkyū-buntansha) |
SEKI Kazuhiko Nagoya University, Research Center for Material Science, Professor, 物質科学国際研究センター, 教授 (80124220)
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| Project Period (FY) |
2002 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥14,500,000 (Direct Cost: ¥14,500,000)
Fiscal Year 2004: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2003: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2002: ¥8,800,000 (Direct Cost: ¥8,800,000)
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| Keywords | SFG / Sum-frequency generation / ionic liquid / molecular chirality / 和周波混合 |
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| Research Abstract |
We have investigated IR-Vis Sum-Frequencey-Generation Circular Dichroism of the ultra-thin films of chihal
molecules, which has been attracted considerable attention for biological and/or medical application. This technique may possibly provide 10^8 times more efficiency than those from any conventional techniques to study the chirarity of the molecules.
We have reformed our old conventional ps-YAG laser and OPG/OPA system with LBO Crystal. We obtained IR laser beams by taking differential frequency of a fundamental YAG and the idler beam of OPA on a AgGaS_2 crystal. We have inserted a quater-wave plate into a visible beam to make left and right polarized light, and then mixed with the IR beam to obtain SFG-CD signal.
The samples used in the experiment were ferro-and antiferro-electric liquid crystal molecules. We have successfully obtained SFG-CD signal for mono-molecular-layer thick samples. We have extended IV-SFG studies on the air/liquid interface structure of room temperature ionic liquids. In relation to this experiment, we have also performed the studies of molecular conformation by using near edge X-ray absorption fine structure spectroscopy.
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Report
(4 results)
Research Products
(49 results)
