2010 Fiscal Year Final Research Report
Chiral recognition on solid surfaces
| Project/Area Number |
20550006
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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 |
Physical chemistry
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| Research Institution | Utsunomiya University |
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Principal Investigator |
EGAWA Chikashi Utsunomiya University, 工学研究科, 教授 (30151963)
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| Co-Investigator(Kenkyū-buntansha) |
IWAI Hidekazu 宇都宮大学, 工学研究科, 助教 (10311599)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 自己組織化 / 固体表面 / 振動分光 / STM / キラル分子 / 昇温脱離 |
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| Research Abstract |
Alanine molecule on Cu(001) is bonded to three Cu atoms through the two oxygen atoms of carboxylate group and the nitrogen atom of amino group. The ordered structure accompanying a dislocation of substrate Cu atoms is determined by I-V curves in LEED observation. In the adsorption of racemic mixtures, D- and L-alanine molecules segregate to form their own c(2x4) domains, thus creating the boundary lines along the [110] direction. The intermolecular network between the boundary is characterized by TPD profile due to a difference in hydrogen bonds between the hydrogen atoms of the amino group and the oxygen atom of the carboxylate group. In adsorption of L-serine with hydroxy group instead of a hydrogen atom in methyl group of alanine, a few different ordered overlayer structures are formed by addition of hydrogen bonds between the hydroxy groups.
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