Dependence of the dimension of the associates of water-soluble tris-malonate of light fullerene - c 60 [= c(COOH) 2] 3 in water solutions at 25 °C
| Autor: | SEMENOV K.N., CHARYKOV N.A., KRITCHENKOV A.S., CHEREPKOVA I.A., MANYAKINA O.S., TYURIN D.P., SHESTOPALOVA A.A., KESKINOV V.A., IVANOVA K.V., IVANOVA N.M., LETENKO D.G., NIKITIN V.A., FOKINA E.L., GUTENEV M.S. |
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| Jazyk: | ruština |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Наносистемы: физика, химия, математика. |
| ISSN: | 2305-7971 2220-8054 |
| Popis: | Investigation of the concentration dependence of the size and type C 60 [= C(COOH) 2] 3 aggregation in aqueous solutions at 25 °C was accomplished with the help of a dynamic light scattering method. It was determined that three types of aggregates are realized in the solutions. The average number of C 60 [= C(COOH) 2] 3 molecules in smaller aggregates and all types of aggregates were calculated. One can see that over the whole concentration range, from 0.01 to 10 g/dm 3, aqueous solutions of C 60 [= C(COOH) 2] 3 are characterized by sub-micro-heterogeneous behavior (because second-type aggregates with the linear dimensions hundreds of nm are formed in all solutions). Additionally, the most concentrated solution (C = 10 g/dm 3) is characterized by micro-heterogeneous or colloid behavior (because third-type aggregates with the linear dimensions on the order of µm are formed). In order to describe or explain such behavior, a stepwise aggregation model was invoked. |
| Databáze: | OpenAIRE |
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