2022 Fiscal Year Final Research Report
Design and synthesis of supramolecular organic semiconductor materials that exhibit high charge transport characteristics
Project/Area Number |
21K18948
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Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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Allocation Type | Multi-year Fund |
Review Section |
Medium-sized Section 33:Organic chemistry and related fields
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Research Institution | The University of Tokyo |
Principal Investigator |
Jun Terao 東京大学, 大学院総合文化研究科, 教授 (00322173)
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Project Period (FY) |
2021-07-09 – 2023-03-31
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Keywords | 超分子化学 / カテナン / テンプレート合成 / 積層ポルフィリン / 分子エレクトロニクス / ロタキサン / 共役分子 / 導電性分子 |
Outline of Final Research Achievements |
By covering the conjugated chains in a highly three-dimensional manner, interchain hopping conduction is eliminated, and by constructing charge transport pathways only within the chains, the lifetime of carrier species is extended and high charge mobility is achieved. Together with this, we succeeded in synthesizing a zigzag-type conjugated polymer with a charge mobility approaching the upper limit of hopping conduction due to the regular cleavage of conjugated chains. Furthermore, by integrating knowledge and experience in the fields of supramolecular chemistry and synthetic chemistry, we have devised a novel structural design that pulls, hardens, widens, and bundles conjugated chains, and surpasses inorganic semiconductor materials by controlling thermal fluctuations. We have successfully developed various rotaxane-catenane type conjugated conductive materials.
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Free Research Field |
分子エレクトロニクス
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Academic Significance and Societal Importance of the Research Achievements |
本研究では共役鎖を引っ張る・固める・広げる・束ねるという斬新な構造設計を考案し,熱的ゆらぎを制御することで,無機半導体材料を凌駕する高い電荷移動度を示す超分子型高分子系半導体材料の新たな構造設計指針を明かとした.本成果により,現在の半導体産業において最大の課題となっているムーアの法則を覆し,安価な塗布・印刷プロセスによりナノスケールの半導体素子が大量に作製可能となり,省エネルギー効果は絶大である。また,必要な元素は有機物の構成成分が中心となり,レアメタルの使用は不要となることで,原料コストが大幅に減少し,産業と社会を変え得る革新的な半導体作製技術の創出が期待される。
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