2006 Fiscal Year Final Research Report Summary
Development of Novel Inorganic/Organic Nanopolymers with Self-Assembling Characteristics
| Project/Area Number |
16205028
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Polymer/Textile materials
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| Research Institution | KYUSHU UNIVERCITY |
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Principal Investigator |
KIMIUZKA Nobuo Kyushu University, Faculty of Engineering, Professor, 大学院工学研究院, 教授 (90186304)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUURA Kazunori Kyushu University, Faculty of Engineering, Associate Professor, 大学院工学研究院, 助教授 (60283389)
MORIKAWA Masa-aki Kyushu University, Faculty of Engineering, Research Associate, 大学院工学研究院, 助手 (10363384)
KUROIWA Keita Kyushu University, Faculty of Engineering, Research Associate, 大学院工学研究院, 助手 (70336006)
ANDO Reiko Kyushu-University, Faculty of Engineering, Research Assistant, 大学院工学府, 技術職員 (60380599)
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| Project Period (FY) |
2004 – 2006
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| Keywords | nano-metal complex / solvatochromism / nano wire / self-assembly / Platinum complex / lipid / thermochromism / mixed-valence |
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| Research Abstract |
Lipid-packaged, mixed-valence linear platinum complexes are dispersed in chloroform, chlorocyclohexane and in methylcyclohexane. They show indigo-colors, which are identical to solid samples. These lipid-complexes display Supramolecular thermochromism, resulting from heat-induced dissociation and recovery of coordination chains.
Unexpectedly, reassembled samples show altered CT absorption spectra. In chloroform, the reassembled complex gives indigo-color, while the chlorocyclohexane and methylcyclohexane dispersions show blue and red-colors, respectively. These color changes indicate enhanced solvation of lipid-packaged platinum complexes after the heat treatment. The thermal re-assembly also affects the aggregate morphology, and leads to the formation of nanowires, nanofibers and nanoparticles depending on the solvents employed. The conversion of pseudo one-dimensional inorganic complexes to lipophilic supramolecular assemblies thus gives solvatochromic properties, which are elements not existing in the conventional solid-state inorganic chemistry.
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