| Budget Amount *help |
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2015: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2013: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
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| Outline of Final Research Achievements |
1,3-Diphosphacyclobutane-2,4-diyl of P-heterocyclic single biradical can work as a highly electron-donating chromophore. In this study we attempted developing novel organic semiconductors that can work under the low threshold voltage based on the electron-donating open-shell singlet structure. Several air-stable 1,3-diphosphacyclobutanes bearing P-arylmethyl structure functioned as the p-type field-effect transistor (FET). Subsequently we synthesized 1,3-diphosphacyclobutanes bearing P-aryl moiety via the nucleophilic aromatic substitution and the aryne process, and such P-arylated 1,3-diphosphacyclobutanes showed the p-type semiconductor characteristics. The radicallic electrons that would allow the hole transfer were successfully visualized by analyzing the X-ray diffraction data. In addition to the semiconductor functionality, 1,3-diphosphacyclobutane-2,4-diyl bearing the electron-donating aryl substituent can be utilized for visual detection of hydrogen fluoride.
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