Design,synthesis and physical property of a π-conjugated photo-excited organic high-spin systems toward the functional material |
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| Institution: | 1. Department of Chemistry, Indian Institute of Technology – Kharagpur, Kharagpur 721302, West Bengal, India;2. Department of Chemistry, Indian Institute of Technology – Bombay, Powai, Mumbai 400076, India;1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, PR China;2. Key Lab of Novel Thin Film Solar Cells, Chinese Academy of Sciences, Hefei 230031, PR China;3. High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, PR China;4. Center for Advanced Photovoltaics, Department of Electrical Engineering and Computer Sciences, South Dakota State University, Brookings, SD 57007, USA |
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| Abstract: | In this paper, we report a design, synthesis and electronic state of a π-conjugated stable verdazyl radical, 1, which electron donor property is improved by an attachment of dimethylamino group. The photo-excited quartet high-spin state was observed by a time-resolved ESR experiment and CV measurement has clarified that the π-HOMO of the ground state is located higher ca. 0.1 eV in energy than 2 reported previously. These results show that the electron donor property is improved and the nature of the photo-excited high-spin state is conserved. In addition, A CT complex 1-BQF4 was synthesized using 1 as an electron donor. |
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