vestichИзвестия Национальной академии наук Беларуси. Серия химических наукProceedings of the National Academy of Sciences of Belarus, Chemical Series1561-83312524-2342The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1561-8331-2022-58-4-379-386vestich-762Research ArticleНЕОРГАНИЧЕСКАЯ ХИМИЯINORGANIC CHEMISTRYФункцыяналізацыя паверхні слюды і алюмінію азіднымі групаміAluminium and mica azide surface functionalizationРанішэнкаБ. В.RanishenkaB. V.

Ранішэнка Багдан Вячаслававіч – навук. супрацоўнік.

Вул. Сурганава, 13, 220072, Мінск

Ranishenka Bahdan V. – Researcher.

13, Surganov str., 220072, Minsk

ranishenka@gmail.comЧалнаковаІ. А.ChelnokovaI. A.

Чалнакова Ірына Аляксандраўна – мал. навук. супрацоўнік.

Вул. Фядзюнінскага, 4, 246007, Гомель

Chelnokova Irina A. – Researcher.

4, Fedyuninski str., 246007, Gomel

irenachelnokova@gmail.comПознякА. А.PoznyakA. A.

Позняк Аляксандр Анатольевіч – канд. фіз.-мат навук, дацэнт, ст. навук. супрацоўнік.

Вул. П. Броўкі, 6, 220013, Мінск

Poznyak Alexander A. – Ph. D. (Physics and Mathematics), Associate Professor, Senior Researcher.

6, P. Brovki str., 220013, Minsk

poznyak@bsuir.byІнстытут фізіка-арганічнай хіміі, Нацыянальная акадэмія навук БеларусіInstitute of Physical Organic Chemistry, National Academy of Sciences of BelarusІнстытут радыебіялогіі, Нацыянальная акадэмія навук БеларусіInstitute of Radiobiology, National Academy of Sciences of BelarusБеларускі дзяржаўны ўніверсітэт інфарматыкі і радыёэлектронікіBelarusian State University of Informatics and Radioelectronics202229112022584379386Copyright © Ранішэнка Б.В., Чалнакова І.А., Позняк А.А., 20222022Ранішэнка Б.В., Чалнакова І.А., Позняк А.А.Ranishenka B.V., Chelnokova I.A., Poznyak A.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestichem.belnauka.by/jour/article/view/762

Праведзена функцыяналізацыя паверхні пласцін алюмінію і слюды (мускавіт) азіднымі групамі з выкарыстаннем методыкі, якая ўключае мадыфікацыю (3-хлорпрапіл)трыхлорсіланам і наступнае нуклеафільнае замяшчэнне атама хлору азідным аніёнам. Трансфармацыя азідных груп у дыметоксітрытыльныя (ДМТ) па рэакцыі [3+2] азід-алкінавага цыкладалучэння дазволіла фотаметрычна, па паглынанню ДМТ-катыёну, вызначыць іх колькасць на адзінку паверхні. Методыка функцыяналізацыі дазволіла дасягнуць высокай загрузкі матэрыялаў азіднымі групамі, якая склала 2,2 і 2,7 нм–2 для слюды і алюмінію адпаведна. Паверхню слюды дадаткова мадыфікавалі разгалінаваным поліэтыленімінам з масай 25 кДа. Узоры слюды паказалі здольнасць да адсарбцыйнай імабілізацыі нанаі мікрааб’ектаў. Такая ўласцівасць можа быць карыснай для выкарыстання іх у якасці падложак для атамнасілавой мікраскапіі, што было паказана на прыкладзе эрытрацытаў і экзасом.

Aluminium and mica (muscovite) plates have been functionalized with azide groups by a protocol which includes (3-chloropropyl) trichlorosilane modification followed by chlorine atom nucleophilic substitution by azide. The azide groups have been transformed to dimethoxytrityl (DMT) ones by [3+2] azide-alkyne cycloaddition reaction. This made it possible to determine their number per surface unit photometrically, based on the absorption of the DMT cation. The functionalization method allowed to achieve high surface load of the materials by azide groups, which was 2.2 and 2.7 nm-2 for mica and aluminium, respectively. The mica plates have been additionally functionalized by 25 kDa branched polyethylenimine. The samples have shown a capability for adsorptive nanoand microobjects immobilization. The feature could be useful for atomic force microscopy, which have been demonstrated with erythrocytes and exosomes.

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