Determination of the Size Distribution of Metallic Colloids from Extinction Spectroscopy

In this paper, we explore the ability of extinction spectroscopy to characterize colloidal suspensions of gold nanoparticles (Au NPs). We demonstrate that the Au NPs’ size distribution can be deduced by analyzing their extinction spectra using Mie theory. Our procedure, based on the non-negative lea...

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Autores principales:	Yehia Mansour, Yann Battie, Aotmane En Naciri, Nouari Chaoui
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	colloids nanoparticle size distribution extinction spectroscopy Mie theory Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/5b9d8a7de4b24b0da3c74ba25daaf953
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spelling	oai:doaj.org-article:5b9d8a7de4b24b0da3c74ba25daaf9532021-11-25T18:30:30ZDetermination of the Size Distribution of Metallic Colloids from Extinction Spectroscopy10.3390/nano111128722079-4991https://doaj.org/article/5b9d8a7de4b24b0da3c74ba25daaf9532021-10-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2872https://doaj.org/toc/2079-4991In this paper, we explore the ability of extinction spectroscopy to characterize colloidal suspensions of gold nanoparticles (Au NPs). We demonstrate that the Au NPs’ size distribution can be deduced by analyzing their extinction spectra using Mie theory. Our procedure, based on the non-negative least square algorithm, takes advantage of the high sensitivity of the plasmon band to the Au NP size. In addition, this procedure does not require any a priori information on the Au NP size distribution. The Au NPs’ size distribution of monomodal or bimodal suspensions can be satisfactorily determined from their extinction spectra. Finally, we show that this characterization tool is compatible with in situ measurement and allows following the change in NPs’ radii during laser exposure.Yehia MansourYann BattieAotmane En NaciriNouari ChaouiMDPI AGarticlecolloidsnanoparticle size distributionextinction spectroscopyMie theoryChemistryQD1-999ENNanomaterials, Vol 11, Iss 2872, p 2872 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	colloids nanoparticle size distribution extinction spectroscopy Mie theory Chemistry QD1-999
spellingShingle	colloids nanoparticle size distribution extinction spectroscopy Mie theory Chemistry QD1-999 Yehia Mansour Yann Battie Aotmane En Naciri Nouari Chaoui Determination of the Size Distribution of Metallic Colloids from Extinction Spectroscopy
description	In this paper, we explore the ability of extinction spectroscopy to characterize colloidal suspensions of gold nanoparticles (Au NPs). We demonstrate that the Au NPs’ size distribution can be deduced by analyzing their extinction spectra using Mie theory. Our procedure, based on the non-negative least square algorithm, takes advantage of the high sensitivity of the plasmon band to the Au NP size. In addition, this procedure does not require any a priori information on the Au NP size distribution. The Au NPs’ size distribution of monomodal or bimodal suspensions can be satisfactorily determined from their extinction spectra. Finally, we show that this characterization tool is compatible with in situ measurement and allows following the change in NPs’ radii during laser exposure.
format	article
author	Yehia Mansour Yann Battie Aotmane En Naciri Nouari Chaoui
author_facet	Yehia Mansour Yann Battie Aotmane En Naciri Nouari Chaoui
author_sort	Yehia Mansour
title	Determination of the Size Distribution of Metallic Colloids from Extinction Spectroscopy
title_short	Determination of the Size Distribution of Metallic Colloids from Extinction Spectroscopy
title_full	Determination of the Size Distribution of Metallic Colloids from Extinction Spectroscopy
title_fullStr	Determination of the Size Distribution of Metallic Colloids from Extinction Spectroscopy
title_full_unstemmed	Determination of the Size Distribution of Metallic Colloids from Extinction Spectroscopy
title_sort	determination of the size distribution of metallic colloids from extinction spectroscopy
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5b9d8a7de4b24b0da3c74ba25daaf953
work_keys_str_mv	AT yehiamansour determinationofthesizedistributionofmetalliccolloidsfromextinctionspectroscopy AT yannbattie determinationofthesizedistributionofmetalliccolloidsfromextinctionspectroscopy AT aotmaneennaciri determinationofthesizedistributionofmetalliccolloidsfromextinctionspectroscopy AT nouarichaoui determinationofthesizedistributionofmetalliccolloidsfromextinctionspectroscopy
_version_	1718411076168581120

Determination of the Size Distribution of Metallic Colloids from Extinction Spectroscopy

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