<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">techusgu</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Юго-Западного государственного университета. Серия: Техника и технологии</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Southwest State University. Series: Engineering and Technology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-1528</issn><publisher><publisher-name>Юго-Западный государственный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21869/2223-1528-2024-14-2-156-167</article-id><article-id custom-type="elpub" pub-id-type="custom">techusgu-262</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>О диффузионной модели кластеризации фуллерена C60 в жидкостях</article-title><trans-title-group xml:lang="en"><trans-title>On the diffusive model of C60 fullerene clusterization in liquids</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4525-5755</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ельникова</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Elnikova</surname><given-names>L. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лилия Вячеславовна Ельникова, кандидат физико-математических наук, научный сотрудник, старший научный сотрудник</p><p>Региональный центр нанотехнологий</p><p>117218; ул. Большая Черемушкинская, д. 25; Москва; 305040; ул. 50 лет Октября, д. 94; Курск</p></bio><bio xml:lang="en"><p>Liliia V. Elnikova, Candidate of Sciences (Physics and Mathematics), Scientific Researcher, Senior researcher</p><p>Regional Center of Nanotechnology</p><p>117218; 25 Bolshaya Cheremushkinskaya Str.; Moscow; 305040; 50 Let Oktyabrya Str. 94; Kursk</p></bio><email xlink:type="simple">elnikova@itep.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1895-9872</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шевченко</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Shevchenko</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виталий Георгиевич Шевченко, доктор химических наук, профессор, ведущий научный сотрудник</p><p>117393; ул. Профсоюзная, д. 70/2;  Москва</p></bio><bio xml:lang="en"><p>Vitaliy G. Shevchenko, Doctor of Sciences (Chemistry), Professor, Leading Researcher</p><p>117393; 70/2 Profsoyuznaya Str.; Moscow</p></bio><email xlink:type="simple">shev@ispm.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7089-0692</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кузьменко</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuzmenko</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Павлович Кузьменко, доктор физико-математических наук, профессор, главный научный сотрудник</p><p>Региональный центр нанотехнологий</p><p>305040; ул. 50 лет Октября, д. 94; Курск</p></bio><bio xml:lang="en"><p>Aleksander P. Kuzmenko, Doctor of Sciences (Physics and Mathematics), Professor, Chief Researcher</p><p>Regional Center of Nanotechnology</p><p>305040; 50 Let Oktyabrya Str. 94; Kursk</p></bio><email xlink:type="simple">apk3527@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>НИЦ «Курчатовский институт»; Юго-Западный государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>NRC-Kurchatov institute; Southwest State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт синтетических полимерных материалов РАН им. Н. С. Ениколопова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N. S. Enikolopov Institute of Synthetic and Polymer Materials of Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Юго-Западный государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Southwest State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>02</day><month>07</month><year>2024</year></pub-date><volume>14</volume><issue>2</issue><fpage>156</fpage><lpage>167</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ельникова Л.В., Шевченко В.Г., Кузьменко А.П., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Ельникова Л.В., Шевченко В.Г., Кузьменко А.П.</copyright-holder><copyright-holder xml:lang="en">Elnikova L.V., Shevchenko V.G., Kuzmenko A.P.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://techusgu.elpub.ru/jour/article/view/262">https://techusgu.elpub.ru/jour/article/view/262</self-uri><abstract><p>   Цель исследования – объяснение механизмов кластеризации молекул фуллерена в жидких средах, наблюдаемых с помощью различных структурных ядерно-физических методов, а также трактовка экспериментальных данных в рамках микроскопической диффузионной модели.</p><sec><title>   Методы</title><p>   Методы. В статье дается краткий обзор результатов методов позитронной аннигиляционной спектроскопии, малоуглового рассеяния нейтронов, просвечивающей электронной микроскопии, с помощью которых устанавливались геометрические параметры кластеров фуллерена в растворах. Теоретическим методом исследования является микроскопическая диффузионная модель «ограниченная диффузией агрегация», описывающая кинетические процессы кластеризации.</p></sec><sec><title>   Результаты</title><p>   Результаты. Модель агрегации, ограниченной диффузией, адекватно отображает механизм образования кластеров молекул C60 в форме фрактальных агрегатов в объеме жидкости, наблюдаемый в экспериментах по позитронной аннигиляционной спектроскопии и малоуглового рассеяния нейтронов. Проанализированы структурные показатели агрегированных частиц фуллерена в дисульфиде углерода, o-ксилоле, толуоле, воде и других растворителях. Рассмотрены свойства различных диффузионных моделей (модели агрегации, ограниченной реакцией, и агрегации, ограниченной диффузией) и их сочетание применительно к оценкам кинетики агрегации фуллерена в растворах. Проведено количественное сравнение результатов обсуждаемых моделей на примере дисульфида углерода.</p></sec><sec><title>   Заключение</title><p>   Заключение. Диффузионные микроскопические модели адекватно описывают явление агрегации фуллерена в растворах полярных и неполярных растворителей, которые регистрируются различными ядерными методами (позитронной аннигиляционной спектроскопии и малоуглового рассеяния нейтронов), наиболее достоверной является модель агрегации, ограниченной диффузией, более того, она является основой численного определения структурных параметров агрегатов. По сравнению с нейтронным рассеянием при аннигиляции позитронов в агрегации фуллерена в растворе участвует молекулярный комплекс позитрония и фуллерена [Ps–C60], но это не влияет на изменение размера кластера и достоверность результатов.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>   Purpose of research</title><p>   Purpose of research. The purpose of the study is to explain the mechanisms of clustering of fullerene molecules in liquid media observed using various structural nuclear -physical methods, as well as the interpretation of experimental data within the framework of a microscopic diffusion model.</p></sec><sec><title>   Methods</title><p>   Methods. The article gives a brief overview of the results of positron annihilation spectroscopy, small-angle neutron scattering, translucent electron microscopy, with which the geometric parameters of fullerene clusters in solutions were established. The theoretical method of research is the microscopic diffusion model “Limited diffusion aggregation”, which describes the kinetic processes of clusterization.</p></sec><sec><title>   Results</title><p>   Results. The diffusion limited aggregation model displays adequately the mechanism of formation of C60 molecules in the form of fractal units in the volume of fluid, observed in experiments on positron annihilation spectroscopy and small-angle neutron scattering. The structural indicators of aggregate fullerene particles in carbon disulfide, o-Xylene, toluene, water and other solvents are analyzed. The properties of various diffusion models (the reaction limited aggregation model and the diffusion limited aggregation model) are considered and their combination in relation to the assessmentsof the kinetics of fullerene aggregation in solutions. A quantitative comparison of the results of the discussed models was carried out using the example of carbon disulfide.</p></sec><sec><title>   Conclusion</title><p>   Conclusion. The diffusion microscopic models adequately describe the phenomenon of fullerene aggregation in polar and non-polar solvents, which are recorded by various nuclear methods (positron annihilating spectroscopy and small-angle neutron scattering), the most reliable is the diffusion limited aggregation model, more than that, it is the basis of a numerical definition of structural structures parameters of units. Compared to neutron scattering, with the annihilation of positrons, in the aggregation of fullerene the [Ps–C60] molecular complexes participate in the clusterization, but this does not affect the change in the size of the cluster and the reliability of the results.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>позитронная аннигиляционная спектроскопия</kwd><kwd>малоугловое рассеяние нейтронов</kwd><kwd>растворы фуллерена</kwd><kwd>кластеризация</kwd><kwd>диффузионная модель</kwd></kwd-group><kwd-group xml:lang="en"><kwd>positron annihilation spectroscopy</kwd><kwd>small-angle neutron scattering</kwd><kwd>fullerene solutions</kwd><kwd>clusterization</kwd><kwd>diffusive model</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания Министерства науки и высшего образования Российской Федерации (тема № FFSM-2027-0002)</funding-statement><funding-statement xml:lang="en">The work was carried out within the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (topic No. FFSM-2027-0002)</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">C&lt;sub&gt;60&lt;/sub&gt; Fullerene as an effective nanoplatform of alkaloid berberine delivery into leukemic cells / A. Grebinyk, S. Prylutska, A. Buchelnikov, N. Tverdokhleb, S. Grebinyk, M. Evstigneev, O. Matyshevska, V. Cherepanov, Y. Prylutskyy, V. Yashchuk, A. Naumovets, U. Ritter, Th. Dandekar, M. Frohme // Pharmaceutics. 2019. Vol. 11. P. 586-1–586-23. doi: 10.3390/pharmaceutics11110586</mixed-citation><mixed-citation xml:lang="en">Grebinyk A., Prylutska S., Buchelnikov A., Tverdokhleb N., Grebinyk S., Evstigneev M., Matyshevska O., Cherepanov V., Prylutskyy Yu., Yashchuk V., Naumovets A., Ritter U., Dandekar Th., Frohme M. C&lt;sub&gt;60&lt;/sub&gt; fullerene as an effective nanoplatform of alkaloid berberine delivery into leukemic cells. Pharmaceutics. 2019;11:586-1–586-23. doi: 10.3390/pharmaceutics11110586</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Mchedlov-Petrossyan N. O. Fullerenes in liquid media: an unsettling intrusion into the solution chemistry // Chem. Rev. 2013. Vol. 113. P. 5149–5193. doi: 10.1021/cr3005026</mixed-citation><mixed-citation xml:lang="en">Mchedlov-Petrossyan N.O. Fullerenes in liquid media: an unsettling intrusion into the solution chemistry. Chem. Rev. 2013;113:5149–5193. doi: 10.1021/cr3005026</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Mchedlov-Petrossyan N. O. Fullerenes in molecular liquids. Solutions in “good” solvents: Another view // Journal of Molecular Liquids. 2011. Vol. 161. P. 1–12. doi: 10.1016/j.molliq.2011.04.001</mixed-citation><mixed-citation xml:lang="en">Mchedlov-Petrossyan N.O. Fullerenes in molecular liquids. Solutions in “good” solvents: Another view. Journal of Molecular Liquids. 2011;161:1–12. doi: 10.1016/j.molliq.2011.04.001</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Bokare A. D., Patnaik A. Evidence for C&lt;sub&gt;60&lt;/sub&gt; aggregation from solvent effects in [Ps–C&lt;sub&gt;60&lt;/sub&gt;] molecular complex formation // Carbon. 2003. Vol. 41. P. 2643–2651. doi: 10.1016/S0008-6223(03)00384-1</mixed-citation><mixed-citation xml:lang="en">Bokare A.D., Patnaik A. Evidence for C&lt;sub&gt;60&lt;/sub&gt; aggregation from solvent effects in [Ps–C&lt;sub&gt;60&lt;/sub&gt;] molecular complex formation. Carbon. 2003;41:2643–2651. doi: 10.1016/S0008-6223(03)00384-1</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Bokare A. D., Patnaik A. Microscopic diffusion model applied to C&lt;sub&gt;60&lt;/sub&gt; fullerene fractals in carbon disulphide solution // J. Chem. Phys. 2003. Vol. 119. P. 4529–4538. doi: 10.1063/1.1594177</mixed-citation><mixed-citation xml:lang="en">Bokare A.D., Patnaik A. Microscopic diffusion model applied to C&lt;sub&gt;60&lt;/sub&gt; fullerene fractals in carbon disulphide solution. J. Chem. Phys. 2003;119:4529–4538. doi: 10.1063/1.1594177</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Bokare A. D., Patnaik A. C60 Aggregate structure and geometry in nonpolar o-Xylene // J. Phys. Chem. B. 2005. Vol. 109. P. 87–92. doi: 10.1021/jp047033b</mixed-citation><mixed-citation xml:lang="en">Bokare A.D., Patnaik A. C60 Aggregate structure and geometry in nonpolar o-Xylene. J. Phys. Chem. B. 2005;109:87–92. doi: 10.1021/jp047033b</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Molecular-colloidal solutions of C&lt;sub&gt;60&lt;/sub&gt; fullerenes in water by small-angle neutron scattering / M. V. Avdeev, A. A. Khokhryakov, T. V. Tropin, G. V. Andrievsky, V. K. Klochkov, L. I. Derevyanchenko, L. Rosta, V. M. Garamus, V. B. Priezzhev, M. V. Korobov, V. L. Aksenov // Langmuir. 2004. Vol. 20. P. 4363–4368. doi: 10.1021/la0361969</mixed-citation><mixed-citation xml:lang="en">Avdeev M.V., Khokhryakov A.A., Tropin T.V., Andrievsky G.V., Klochkov V.K., Derevyanchenko L.I., Rosta L., Garamus V.M., Priezzhev V.B., Korobov M.V., Aksenov V.L. Molecular-colloidal solutions of C&lt;sub&gt;60&lt;/sub&gt; fullerenes in water by small-angle neutron scattering. Langmuir. 2004;20:4363–4368. doi: 10.1021/la0361969</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Spatial structure and aggregation of carbon allotrope nanofillers in isotactic polypropylene composites by small-angle neutron scattering / L. V. Elnikova, A. N. Ozerin, V. G. Shevchenko, P. M. Nedorezova, A. T. Ponomarenko, V. V. Skoi, A. I. Kuklin // Fullerenes Nanotubes and Carbon Nanostructures. 2021. Vol. 29, no. 1. P. 783–792. doi: 10.1080/1536383X.2021.1896496</mixed-citation><mixed-citation xml:lang="en">Elnikova L.V., Ozerin A.N., Shevchenko V.G., Nedorezova P.M., Ponomarenko A.T., Skoi V.V., Kuklin A.I. Spatial structure and aggregation of carbon allotrope nanofillers in isotactic polypropylene composites by small-angle neutron scattering. Fullerenes Nanotubes and Carbon Nanostructures. 2021;29(10):783–792. doi: 10.1080/1536383X.2021.1896496</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Grafutin V.I., Prokop'ev E.P. Positron annihilation spectroscopy in materials structure studies // Physics-Uspekhi. 2002. Vol. 45, no. 1. P. 59–74. doi: 10.1070/PU2002v045n01ABEH000971</mixed-citation><mixed-citation xml:lang="en">Grafutin V.I., Prokop'ev E.P. Positron annihilation spectroscopy in materials structure studies. Physics-Uspekhi. 2002;45(1):59–74. doi: 10.1070/PU2002v045n01ABEH000971</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Изучение структуры ряда жидких молекулярных сред методами позитронной спектроскопии // В. И. Графутин, Л. В. Ельникова, О. В. Илюхина, Г. Г. Мясищева, Е. П. Прокопьев, Ю. В. Фунтиков // Химия высоких энергий. 2013. Т. 47, no. 4. С. 268–274. URL: https://naukarus.com/izuchenie-struktury-ryada-zhidkih-molekulyarnyh-sred-metodami-pozitronnoy-spektroskopii</mixed-citation><mixed-citation xml:lang="en">Grafutin V.I., El'nikova L.V., Ilyukhina O.V., Myasischeva G.G., Prokopiev E.P., Funtikov Yu.V. Study of structure of simple fluids with positron annihilation spectroscopy. Khimiya vysokikh energii = High energy chemistry. 2013;47(4):156–161. (In Russ.) URL: https://naukarus.com/izuchenie-struktury-ryada-zhidkih-molekulyarnyh-sred-metodami-pozitronnoy-spektroskopii</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Lightbody D., Sherwood H. N. Temperature and phase dependence of positron lifetimes in solid cyclohexan // Chem. Phys. 1985. Vol. 93. P. 475–484.</mixed-citation><mixed-citation xml:lang="en">Lightbody D., Sherwood H.N. Temperature and phase dependence of positron lifetimes in solid cyclohexan. Chem. Phys. 1985;93:475–484.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Tao S. J. Positronium annihilation in molecular substances // J. Chem. Phys. 1972. Vol. 56. P. 5499–5510. doi: 10.1063/1.1677067</mixed-citation><mixed-citation xml:lang="en">Tao S.J. Positronium annihilation in molecular substances. J. Chem. Phys. 1972;56:5499–5510. doi: 10.1063/1.1677067</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Eldrup M., Lightbody D., Sherwood J. N. The temperature dependence of positron lifetimes in solid pivalic acid // J. Chem. Phys. 1981. Vol. 63. P. 51–58. doi: 10.1016/0301-0104(81)80307-2</mixed-citation><mixed-citation xml:lang="en">Eldrup M., Lightbody D., Sherwood J.N. The temperature dependence of positron lifetimes in solid pivalic acid. J. Chem. Phys. 1981;63:51–58. doi: 10.1016/0301-0104(81)80307-2</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Deng Q., Jean Y. C. Free volume distribution of an epoxy polymer probed by positron annihilation by positron annihilation spectroscopy: pressure dependence // Macromolecules. 1993. Vol. 26, no. 1. P. 30–34. doi: 10.1021/ma00053a005</mixed-citation><mixed-citation xml:lang="en">Deng Q., Jean Y.C. Free volume distribution of an epoxy polymer probed by positron annihilation by positron annihilation spectroscopy: pressure dependence. Macromolecules. 1993;26(1):30–34. doi: 10.1021/ma00053a005</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Török Gy., Lebedev V. T., Cser L. Small-angle neutron-scattering study of anomalous C&lt;sub&gt;60&lt;/sub&gt; clusterization in Toluene // Physics of the Solid State. 2002. Vol. 44, no. 3. P. 572–573.</mixed-citation><mixed-citation xml:lang="en">Török Gy., Lebedev V.T., Cser L. Small-angle neutron-scattering study of anomalous C&lt;sub&gt;60&lt;/sub&gt; clusterization in Toluene. Physics of the Solid State. 2002;44(3):572–573.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Tropin T. V., Aksenov V. L, Schmelzer J. W. P Kinetic processes in fullerene solutions // Physics of Particles and Nuclei. 2021. Vol. 52, no. 2. P. 315–329. doi: 10.1134/S1063779621020076</mixed-citation><mixed-citation xml:lang="en">Tropin T.V., Aksenov V.L, Schmelzer J.W.P Kinetic processes in fullerene solutions. Physics of Particles and Nuclei. 2021;52(2):315–329. doi: 10.1134/S1063779621020076</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Witten T. A., Sander L. M. Diffusion-limited aggregation, a kinetic critical phenomenon // Physical Review Letters. 1981. Vol. 47, no. 19. P. 1400–1403. doi: 10.1103/PhysRevLett.47.1400</mixed-citation><mixed-citation xml:lang="en">Witten T.A., Sander L.M. Diffusion-limited aggregation, a kinetic critical phenomenon. Physical Review Letters. 1981;47(19):1400–1403. doi: 10.1103/PhysRevLett.47.1400</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Структура и токсичность водных растворов фуллерена С&lt;sub&gt;60&lt;/sub&gt; / Е. А. Кизима, А. А. Томчук, Л. А. Булавин, В. И. Петренко, Л. Алмаши, М. В. Коробов, Д. С. Волков, И. В. Михеев, И. В. Кошлань, Н.А. Кошлань, П. Блаха, В.Л. Аксенов // Поверхность. Рентгеновские, синхротронные и нейтронные исследования. 2015. Vol. 1. P. 5–9. doi: 10.1134/S1027451015010127</mixed-citation><mixed-citation xml:lang="en">Kyzyma E.A., Tomchuk A.A., Bulavin L.A., Petrenko V.I., Almasy L., Korobov M.V., Volkov D.S., Miheev I.V., Koshlan I.V., Koshlan N.A., Blaha P., Aksenov V.L. Structure and toxicity of aqueous fullerene solutions. Poverkhnost'. Rentgenovskie, sinkhrotronnye i neitronnye issledovaniya = X-ray, Synchrotron and Neutron Techniques. 2015;9:1–5. (In Russ.) doi: 10.1134/S1027451015010127</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Vass Sz. Microscopic diffusion model for calculating orthopositronium lifetimes in micellar solutions // J. Phys. Chem. 1986. Vol. 90. P. 1099–1106.</mixed-citation><mixed-citation xml:lang="en">Vass Sz. Microscopic diffusion model for calculating orthopositronium lifetimes in micellar solutions. J. Phys. Chem. 1986;90:1099–1106.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Диагностика наносистем. Многоуровневые фрактальные структуры. Ч. II / А. П. Шпак, В. В. Шилов, О. А. Шилова, Ю. А. Куницкий. Киев: Академпериодика, 2004. 112 c.</mixed-citation><mixed-citation xml:lang="en">Shpak A.P., Shilov V.V., Shilova O.A., Kunitsky Yu.A. Diagnostics of nanosystems. Multi-level fractal structures. Part II. Kiev: Akademperiodica; 2004. 112 p.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Model description of aggregation in fullerene solutions / V. L. Aksenov, M. V. Avdeev, T. V. Tropin, V. B. Priezzhev, J. W. P. Schmelzer // AIP Conf. Proc. 2005. Vol. 786. P. 37–40. doi: 10.1063/1.2103816</mixed-citation><mixed-citation xml:lang="en">Aksenov V.L., Avdeev M.V., Tropin T.V., Priezzhev V.B., Schmelzer J.W.P. Model description of aggregation in fullerene solutions. AIP Conf. Proc. 2005;786:37–40. doi: 10.1063/1.2103816</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
