Intense charge transfer plasmons in golden nanoparticle dimers connected by conductive molecular linkers : научное издание

Fedorov A.S.; Visotin M.A.; Lukyanenko A.V.; Gerasimov V.S.; Aleksandrovsky A.S.

Дополнительные ссылки: eLibrary

База данных: Каталог библиотеки СФУ

Библиографическое описание: Intense charge transfer plasmons in golden nanoparticle dimers connected by conductive molecular linkers : научное издание / A. S. Fedorov [et al.]. - Текст : непосредственный // Journal of Chemical Physics. - 2024. - Т. 160, № 8. - ISSN 0021-9606. - ISSN 1089-7690, DOI 10.1063/5.0183334.

Аннотация: Golden nanoparticle dimers connected by conjugated molecular linkers 1,2-bis(2-pyridyl)ethylene are produced. The formation of stable dimers with 22 nm diameter nanoparticles is confirmed by transmission electron microphotography. The possibility of charge transfer through the linkers between the particles in the dimers is shown by the density functional theory calculations. In addition to localized plasmon resonance of solitary nanoparticles with a wavelength of 530 nm, the optical spectra exhibit a new intense absorption peak in the near-infrared range with a wavelength of ~780 nm. The emergent absorption peak is attributed to the charge-transfer plasmon (CTP) mode; the spectra simulated within the CTP developed model agree with the experimental ones. This resonant absorption may be of interest to biomedical applications due to its position in the so-called transmission window of biological tissues. The in vitro heating of CTP dimer solution by a laser diode with a wavelength of 792 nm proved the efficiency of CTP dimers for achieving a temperature increase of ΔT = 6 °C, which is sufficient for hyperthermia treatment of malignant tumors. This indicates the possibility of using hyperthermia to treat malignant tumors using the material we synthesized.

Год издания: 2024

Авторы: Fedorov A.S. , Visotin M.A. , Lukyanenko A.V. , Gerasimov V.S. , Aleksandrovsky A.S.

Издательство: American Institute of Physics

Источник: Journal of Chemical Physics

Выпуск: Т. 160, № 8

Держатель оригинала документа: Institute of Computational Modeling, Federal Research Center KSC SB RAS 4, 660036 Krasnoyarsk, Russia, International Research Center of Spectroscopy and Quantum Chemistry – IRC SQC, Siberian Federal University 2, 660041 Krasnoyarsk, Russia, Kirensky Institute of Physics, Federal Research Center KSC SB RAS 1, 660036 Krasnoyarsk, Russia, Siberian Federal University 3, 660041 Krasnoyarsk, Russia

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