2017 Fiscal Year Final Research Report
Development of nontoxic and highly stable multi-color pigments based on the complexation of natural dye with inorganic hosts
| Project/Area Number |
15K00724
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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 |
Home economics/Human life
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| Research Institution | Shizuoka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
福原 長寿 静岡大学, 工学部, 教授 (30199260)
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| Co-Investigator(Renkei-kenkyūsha) |
MAEDA Yasuhisa 静岡大学, 工学部, 教授 (00159138)
TOMITA Yasumasa 静岡大学, 工学部, 准教授 (50303532)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 天然色素 / 耐久性 / 有機無機複合材料 / 色材 |
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| Outline of Final Research Achievements |
It was confirmed that natural dye was stabilized by the complexation with various inorganic host materials. Clays with a layered structure was employed as a host material of hydrophobic natural dye, beta-carotene (BC). The interlayer cation of the clay was exchanged by surfactant molecules. The BC molecules was readily introduced into the interlayer of the clay by a strong interaction between the organo-modified clay and the dye molecules, and a deeply colored material was obtained by a rather simple and easy preparing method. The mesoporous silica containing trivalent cations in its framework was also used as a host material of BC. The cations in the framework worked as an acidic site, and the interaction between the acidic site and the BC molecules brought about the significant color change of BC from yellow to blue. The blue-colored BC was as stable as the original yellowish one under visible light irradiation.
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| Free Research Field |
光機能化学
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