najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2026-17-1-59-68najo-1689Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХThe first example of synthesis Au-nanoparticles with amidine derivatives of closo-decaborate anion as stabilizing ligandПервый пример синтеза наночастиц золота с амидиновыми производными клозо-декаборатного аниона в качестве стабилизирующих лигандовhttps://orcid.org/0009-0008-2568-0483ИвановаА. А.IvanovaA. A.

Arina A. Ivanova

Moscow, 101000

Moscow,119991

ivanova.arina112233@gmail.comhttps://orcid.org/0000-0002-2725-8891ФилипповаА. Д.FilippovaA. D.

Arina D. Filippova

Moscow, 119991

arifilippova@yandex.ruhttps://orcid.org/0000-0002-4820-8498ТеплоноговаМ. А.TeplonogovaM. A.

Maria A. Teplonogova

Moscow, 119991

m.teplonogova@gmail.comСадовниковА. А.SadovnikovA. A.

Alexey A. Sadovnikov

119991, Moscow

https://orcid.org/0000-0001-7426-5982СеливановН. А.SelivanovN. A.

Nikita A. Selivanov

Moscow, 119991

goovee@yandex.ruhttps://orcid.org/0000-0003-4083-386XЖдановА. П.ZhdanovA. P.

Andrey P. Zhdanov

Moscow, 119991

zhdanov@igic.ras.ruhttps://orcid.org/0000-0002-4475-124XЖижинК. Ю.ZhizhinK. Yu.

Konstantin Yu. Zhizhin

Moscow, 119991

zhizhin@igic.ras.ruhttps://orcid.org/0000-0002-0131-6387КузнецовН. Т.KuznetsovN. T.

Nikolay T. Kuznetsov

Moscow, 119991

boron@igic.ras.ruFaculty of Chemistry, Higher School of EconomicsRussian FederationKurnakov Institute of General and Inorganic Chemistry of the Russian Academy of SciencesRussian FederationKurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences; Topchiev Institute of Petrochemical Synthesis, Russian Academy of SciencesRussian Federation2026040320261715968Copyright © Ivanova A.A., Filippova A.D., Teplonogova M.A., Sadovnikov A.A., Selivanov N.A., Zhdanov A.P., Zhizhin K.Y., Kuznetsov N.T., 20262026Иванова А.А., Филиппова А.Д., Теплоногова М.А., Садовников А.А., Селиванов Н.А., Жданов А.П., Жижин К.Ю., Кузнецов Н.Т.Ivanova A.A., Filippova A.D., Teplonogova M.A., Sadovnikov A.A., Selivanov N.A., Zhdanov A.P., Zhizhin K.Y., Kuznetsov N.T.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1689

In this work, we report the one-pot aqueous synthesis of AuNPs using novel amidine derivatives of the closo-decaborate anion, functionalized with pendant thiol groups, as combined reducing and stabilizing agents. A comprehensive characterization using transmission electron microscopy (TEM) revealed the formation of nanoparticles with a distinctive and unusual hollow-core/dense-shell architecture, where a gold-rich shell encapsulates a low-Z element core. This unique morphology accounts for the observed absence of a characteristic surface plasmon resonance (SPR) band in the UV-Vis spectra, distinguishing these materials from classical solid-core AuNPs. X-ray photoelectron spectroscopy (XPS) confirmed the covalent attachment of the ligands via Au-S bonds and the integrity of the boron cage on the nanoparticle surface. The synthesis was optimized, establishing a 1:6 (Au:Ligand) molar ratio as ideal for achieving a narrow particle size distribution.

В данной работе представлен одностадийный водный синтез золотых наночастиц (AuNPs) с использованием новых амидиновых производных клозо-декаборатного аниона, функционализированных терминальными тиольными группами, в качестве одновременно восстановителей и стабилизирующих агентов. Комплексная характеристика методом просвечивающей электронной микроскопии (ПЭМ) выявила образование наночастиц с необычной архитектурой типа «полое ядро – плотная оболочка», где оболочка, обогащённая золотом, инкапсулирует ядро из лёгких элементов. Данная уникальная морфология объясняет отсутствие характерной полосы поверхностного плазмонного резонанса (SPR) в УФ-видимых спектрах, что отличает полученные материалы от классических наночастиц золота с плотным металлическим ядром. Методом рентгенофотоэлектронной спектроскопии (РФЭС) подтверждено ковалентное связывание лигандов через связи Au–S и сохранение борного кластера на поверхности наночастиц. Проведена оптимизация синтеза: установлено, что молярное соотношение 1:6 (Au:лиганд) является оптимальным для получения узкого распределения частиц по размерам.

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