کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1341065 | 1500295 | 2005 | 4 صفحه PDF | دانلود رایگان |
In this paper, we report the design, synthesis and electronic state of a π-conjugated stable iminonitroxide radical, 1, the electron donor property of which is improved by an attachment of dimethylamino group. The photo-excited quartet high-spin state was observed by a time-resolved ESR experiment. CV measurement has clarified that the π-HOMO of the ground state is located higher ca. 0.35 eV in energy than 2 reported previously. These results show that the electron donor property is improved and the nature of the photo-excited spin alignment is conserved. Two CT complexes (1-TCNQ and 1-BQF4) were synthesized using 1 as an electron donor. Their complexes have shown strong CT bands. The time-resolved ESR signal without the fine-structure splitting was observed for 1-TCNQ CT complex. The signal may arise from the photo-induced electron transfer from the quartet excited state of 1 to the TCNQ acceptor.
We report the design, synthesis and electronic state of a π-conjugated stable iminonitroxide radical, 1, the electron donor property of which is improved by an attachment of dimethylamino group. The photo-excited quartet high-spin state was observed by a time-resolved ESR experiment.Figure optionsDownload as PowerPoint slide
Journal: Polyhedron - Volume 24, Issues 16–17, 17 November 2005, Pages 2185–2188