IN SITU optical and ESR studies of polyazulene |
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| Institution: | 1. Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, China;2. School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China;1. University of Belgrade – Faculty of Pharmacy, Department of Physical Chemistry and Instrumental Methods, Vojvode Stepe 450, Belgrade 11221, Serbia;2. University of Belgrade – Faculty of Physical Chemistry, Studentski trg 12-16, Belgrade 11158, Serbia;1. Nanoscience Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra, India;2. Department of Chemistry, Shri Yashwantaro Patil Science College Solankur, Kolhapur, Maharashtra, India;3. Department of Chemistry, Rajarshi Chhatrapati Shahu College, Kolhapur, Maharashtra, India |
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| Abstract: | The neutral polyazulene shows an extraordinary large ESR spin density ≈ 1020 spins/g and two optical absorption peaks corresponding to the interband transitions. As the doping proceeds, the spin density as a function of applied potential charges anomalously and new optical absorption peaks characteristic to each doping stage appear successively. These results are explained tentatively by taking a unique band structure of polyazulene into account. |
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