najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМОnajo-1295Research ArticleCHEMISTRY AND MATERIAL SCIENCEХИМИЯ И МАТЕРИАЛОВЕДЕНИЕPre-chromatography crude separation of light fullerenes by poly-termical (re)crystallization methodKeskinovV. A.

Saint Petersburg

keskinov@mail.ruCharykovN. A.

Saint Petersburg

KeskinovaM. V.

Saint Petersburg

MurashkinYu. V.

Saint Petersburg

BlokhinA. A.

Saint Petersburg

SemenovK. N.

Saint Petersburg

Saint-Petersburg State Technological Institute (Technological University); ILIP Ltd. (Innovations of Leningrad Universities and Enterprises)Russian FederationILIP Ltd. (Innovations of Leningrad Universities and Enterprises); Saint-Petersburg State Technological Institute (Technological University)Russian FederationILIP Ltd. (Innovations of Leningrad Universities and Enterprises)Russian FederationSaint Petersburg State University; ILIP Ltd. (Innovations of Leningrad Universities and Enterprises)Russian Federation20132108202543344351Copyright © Keskinov V.A., Charykov N.A., Keskinova M.V., Murashkin Y.V., Blokhin A.A., Semenov K.N., 20252025Keskinov V.A., Charykov N.A., Keskinova M.V., Murashkin Y.V., Blokhin A.A., Semenov K.N.Keskinov V.A., Charykov N.A., Keskinova M.V., Murashkin Y.V., Blokhin A.A., Semenov K.N.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1295

 The pre-chromatography method of crude separation of light fullerenes (C60 and C70) is based on multistage processes of (re)crystallization — the solution of fullerenes solid solutions in liquid solvent (o-xylene) or in liquid o-xylene solutions at high temperature (85 ˚ C) and crystallization of solid solutions from saturated liquid solutions at low temperature (–20 ˚ C). As a result, for example, the initial standard fullerene extract may be efficiently divided into two different solid solutions — the first, considerably enriched in C60 fullerene and the second, considerably enriched by the C70 fullerene. In this separation process, the concentrate enriched by C60, is also enriched in C84. In that process, 98.6 mass % of C60 was contained in the C60- enriched concentrate (from the sum content of C60 in the initial extract), simultaneously, 65.9 mass % of C70 contained in the C70-enriched concentrate (from the sum content of C70 in the initial extract).

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The authors declare that there are no conflicts of interest present.