Characterization of KC<sub>60</sub>Obtained via a Potassium Carbonate Route
Ilias I. KhairullinDepartment of Chemistry , National Taiwan University, Institute of Atomic and Molecular Sciences, Academia Sinica , P.O. Box 23-34, Taipei, Taiwan, Republic of China ; Department of Thermophysics , Uzbekistan Academy of Sciences , Katartal Str. 28, Chilanzar C, Tashkent, 700135, Republic of Uzbekistan (CIS)Zheng-Drong TsaoDepartment of Chemistry , National Taiwan University, Institute of Atomic and Molecular Sciences, Academia Sinica , P.O. Box 23-34, Taipei, Taiwan, Republic of ChinaLian‐Pin HwangDepartment of Chemistry , National Taiwan University, Institute of Atomic and Molecular Sciences, Academia Sinica , P.O. Box 23-34, Taipei, Taiwan, Republic of China
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Аннотация
Abstract KC6o synthesized by high temperature annealing of mixture of C60 and K2C03has been characterized by EPR, NMR and differential scanning calorimetry methods. The rich phase diagram with polymeric and dimer phases previously elaborated for KC60 is obtained in present work as well. This suggests that alkaline carbonates can be efficiently used in preparation of C60-based polymer materials where C6o molecules are charged by alkaline atoms. Another important outcome of present study is that despite high temperatures and presence of oxygen released from K2CO3, EPR and NMR spectra did not exhibit signals which might be referred to fullerene epoxides or related species.
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