Study of colloidal gold nanorods in liquid dispersions using light scattering methods

Five samples of liquid dispersions of colloidal gold nanorods having various aspect ratios have been studied using light scattering methods. Transmission electron microscopy has been employed as a reference method. Advantages and drawbacks of dynamic light scattering and nanoparticle tracking analys...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Pavel V. Shalaev, Polina A. Monakhova, Sergey A. Tereshchenko
Formato:	article
Lenguaje:	EN
Publicado:	Pensoft Publishers 2021
Materias:	Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/17f7a5367aa6440ea9c7c89812626265
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:17f7a5367aa6440ea9c7c89812626265
record_format	dspace
spelling	oai:doaj.org-article:17f7a5367aa6440ea9c7c898126262652021-11-24T04:30:48ZStudy of colloidal gold nanorods in liquid dispersions using light scattering methods10.3897/j.moem.7.2.755192452-1779https://doaj.org/article/17f7a5367aa6440ea9c7c898126262652021-06-01T00:00:00Zhttps://moem.pensoft.net/article/75519/download/pdf/https://moem.pensoft.net/article/75519/download/xml/https://moem.pensoft.net/article/75519/https://doaj.org/toc/2452-1779Five samples of liquid dispersions of colloidal gold nanorods having various aspect ratios have been studied using light scattering methods. Transmission electron microscopy has been employed as a reference method. Advantages and drawbacks of dynamic light scattering and nanoparticle tracking analysis methods for study of nanoparticle geometrical parameters and concentration, sample monodispersity degree and detection of large particle aggregations and quasispherical impurities have been demonstrated. We show that depolarized dynamic light scattering method can be used for analysis of geometrical parameters of colloidal gold nanorods in liquid dispersions. The measurement results depend largely on the presence of large impurity particles or particle aggregations in samples. In turn the presence of large particles in dispersions can be detected using dynamic light scattering methods or nanoparticle tracking analysis. Dynamic light scattering method is more sensitive to the presence of even small quantities of large impurities or aggregations in samples. The monodispersity degree of nanorod liquid dispersions can also be assessed using dynamic light scattering and nanoparticle tracking analysis methods, and the measurement results can be considered more statistically significant in comparison with electron microscopy because a larger number of particles are analyzed. An increase in the concentration of spherical particles in compound dispersions of colloidal gold nanospheres and nanorods leads to a decrease in the contribution of the rotational mode to the overall scattering intensity. Data on the concentration of quasispherical impurities in samples of colloidal gold nanorod liquid dispersions have been reported on the basis of scattered light depolarization degree measurements.Pavel V. ShalaevPolina A. MonakhovaSergey A. TereshchenkoPensoft PublishersarticleElectronicsTK7800-8360ENModern Electronic Materials, Vol 7, Iss 2, Pp 53-61 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Electronics TK7800-8360
spellingShingle	Electronics TK7800-8360 Pavel V. Shalaev Polina A. Monakhova Sergey A. Tereshchenko Study of colloidal gold nanorods in liquid dispersions using light scattering methods
description	Five samples of liquid dispersions of colloidal gold nanorods having various aspect ratios have been studied using light scattering methods. Transmission electron microscopy has been employed as a reference method. Advantages and drawbacks of dynamic light scattering and nanoparticle tracking analysis methods for study of nanoparticle geometrical parameters and concentration, sample monodispersity degree and detection of large particle aggregations and quasispherical impurities have been demonstrated. We show that depolarized dynamic light scattering method can be used for analysis of geometrical parameters of colloidal gold nanorods in liquid dispersions. The measurement results depend largely on the presence of large impurity particles or particle aggregations in samples. In turn the presence of large particles in dispersions can be detected using dynamic light scattering methods or nanoparticle tracking analysis. Dynamic light scattering method is more sensitive to the presence of even small quantities of large impurities or aggregations in samples. The monodispersity degree of nanorod liquid dispersions can also be assessed using dynamic light scattering and nanoparticle tracking analysis methods, and the measurement results can be considered more statistically significant in comparison with electron microscopy because a larger number of particles are analyzed. An increase in the concentration of spherical particles in compound dispersions of colloidal gold nanospheres and nanorods leads to a decrease in the contribution of the rotational mode to the overall scattering intensity. Data on the concentration of quasispherical impurities in samples of colloidal gold nanorod liquid dispersions have been reported on the basis of scattered light depolarization degree measurements.
format	article
author	Pavel V. Shalaev Polina A. Monakhova Sergey A. Tereshchenko
author_facet	Pavel V. Shalaev Polina A. Monakhova Sergey A. Tereshchenko
author_sort	Pavel V. Shalaev
title	Study of colloidal gold nanorods in liquid dispersions using light scattering methods
title_short	Study of colloidal gold nanorods in liquid dispersions using light scattering methods
title_full	Study of colloidal gold nanorods in liquid dispersions using light scattering methods
title_fullStr	Study of colloidal gold nanorods in liquid dispersions using light scattering methods
title_full_unstemmed	Study of colloidal gold nanorods in liquid dispersions using light scattering methods
title_sort	study of colloidal gold nanorods in liquid dispersions using light scattering methods
publisher	Pensoft Publishers
publishDate	2021
url	https://doaj.org/article/17f7a5367aa6440ea9c7c89812626265
work_keys_str_mv	AT pavelvshalaev studyofcolloidalgoldnanorodsinliquiddispersionsusinglightscatteringmethods AT polinaamonakhova studyofcolloidalgoldnanorodsinliquiddispersionsusinglightscatteringmethods AT sergeyatereshchenko studyofcolloidalgoldnanorodsinliquiddispersionsusinglightscatteringmethods
_version_	1718415961056346112

Study of colloidal gold nanorods in liquid dispersions using light scattering methods

Ejemplares similares