2022 Fiscal Year Final Research Report
New developments of 3-methoxythiophene oligomer exhibiting gold like luster
| Project/Area Number |
20K05614
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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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| Review Section |
Basic Section 35020:Polymer materials-related
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| Research Institution | Chiba University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 金色調光沢 / チオフェン重合体 / ラメラ結晶 / 塗布膜 / 導電性ポリマー / ポリマーブレンド |
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| Outline of Final Research Achievements |
We had discovered that the coating films of 3-methoxythiophene oligomers developed a gold-like luster. In this study, we investigated the mechanisms for blending the oligomer with acrylic resin to develop a black luster on the film surface and a gold tone on the reverse (back) side, and for the newly synthesized water-soluble oligomers to develop a stronger gold-like luster than our previously developed oligomers. The results showed that in the blend films, the chromaticity difference is caused by the fact that the lamellar crystallites of the oligomer, which are responsible for the gold tone, are less on the surface of the film and more on the back side of the film. For the research on the water-soluble oligomers, the study of varying polymerization conditions and evaluation of physical properties revealed that the formation of more lamellar crystallites in the films than in conventional oligomers is a factor for the stronger lustrous appearance of the former films.
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| Free Research Field |
電気化学、薄膜材料化学
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| Academic Significance and Societal Importance of the Research Achievements |
日常生活に用いられる金属調光沢塗料には金属微粉末が含有されており、金属の使用に伴う多くの問題点を内蔵している。研究代表者が開発した金色調光沢重合体は金属を含まないためのそうした問題点を解決する可能性がある。本研究においては、水溶性でありかつ強い金色調光沢を示す物質の開発とその機構の解明を行うことができた。また、汎用樹脂とのブレンドにより、金色調光沢塗料と並んで高級感を演出する黒色光沢塗料の開発にも成功し、黒色光沢発現の要因にも迫ることができた。
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