| Project/Area Number |
16550116
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Functional materials chemistry
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| Research Institution | Yamagata University |
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Principal Investigator |
SAKIYAMA Hiroshi Yamagata University, Faculty of Science, Associate Professor, 理学部, 助教授 (20253396)
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| Project Period (FY) |
2004 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2005: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2004: ¥2,600,000 (Direct Cost: ¥2,600,000)
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| Keywords | Electro-optic effect / Transition metal complex / Polar crystal / 極性体 / 光学活性 |
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| Research Abstract |
Purpose of this study was as follows :
A. To control orientation of complex cations in a crystal by controlling the symmetry of the complex cations.
B. To study the electro-optic effect of the crystals.
Here is a summary of main results.
1 Precise measurement of the electro-optic effect
In order to estimate the electro-optic effect precisely, a transmission method and a reflection method were investigated using single-crystal samples, and the reflection method was proved to have some advantages in the electro-optic measurement.
2 Crystallization in two different crystal systems
A chiral dinuclear nickel(II) complex was shown to crystallize into two different crystal systems under different conditions ; One was polar and the other was not polar.
3 Search for new promising compounds
Some new transition metal complexes were prepared using chiral ligands.
4 Observation of the fourth-order electro-optic effect
Electro-optic effect of some compounds were measured. Especially, a D_2 symmetric crystal showed a fouth-order electro-optict effect ; a change in refractive index was proportional to the fourth power of the external electric field.
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