2016 Fiscal Year Final Research Report
Fabrication of chiral assembled metal nanorods linked by photochromic compounds
| Project/Area Number |
26390002
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Nanostructural chemistry
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| Research Institution | University of Yamanashi |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 金ナノロッド / 自己組織化 / キラル組織体 / 光応答性 / フォトクロミック分子 / スピロピラン / タンパク質 |
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| Outline of Final Research Achievements |
The light-triggered assembling of gold nanorods (AuNRs) modified with photochromic compounds and the fabrication of chiral AuNR assemblies using proteins were investigated. We synthesized a thiolated spiropyran and azobenzenes, and then introduced onto the AuNRs surface as photoresponsive moieties. The AuNRs used were prepared by a seed-mediated growth method. The AuNRs linked by azobenzene dithiols were assembled without photoirradiation, whereas those modified spiropyran with a dithiolane were formed networked assemblies under UV irradiation. These mean that the assembly of AuNRs is constructed by the photoisomerization of spiropyran moieties. Also, we successfully fabricated the chiral assemblies of AuNRs utilizing electrostatic interaction with proteins. The chiral assemblies have record level of chiroptical activity, indicating the strongly plasmonic circular dichroism. Thus the assemblies of AuNRs can be controlled by photoisomerizable ligands and interaction with proteins.
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| Free Research Field |
生物有機化学
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