| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2020: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
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| Outline of Final Research Achievements |
Bis(imino nitroxide) bridged by a diarylethene annulated isomer was synthesized, and the exchange interaction between the two radicals was determined by the simulation of the ESR spectrum. The exchange interaction was found to be as large as that of the closed-ring isomer, suggesting that the annulated isomer can be used as a highly-conductive molecular wire. Electron tunneling efficiency of armchair graphene nanoribbons was evaluated by calculating decay constant of the exchange interaction. It was found that the electron tunneling efficiency is significantly large in the case of N = 3n-1. Single-molecular conductances were compared between molecular wires with and without radical substituent by STM apparent height measurement. Statistical analysis of the STM images revealed that the radical-substituted wire has larger conductance than the non-radical-substituted reference.
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