Ripening of two-dimensional colloidal CdSe nanocrystals into zero-dimensional nanodots

Summary: Understanding the ripening of two-dimensional (2D) colloidal nanocrystals (NCs) is important for the controllable synthesis of NCs with desired morphology and properties. In this study, we systematically investigate the ripening behavior of the 2D CdSe NCs in the presence of a short-chain a...

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Autores principales:	Xiaopeng Huang, Virendra K. Parashar, Martin A.M. Gijs
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Nanoparticles Colloids Nanomaterials Science Q
Acceso en línea:	https://doaj.org/article/7241ee4d47d44525984c06077006427f
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spelling	oai:doaj.org-article:7241ee4d47d44525984c06077006427f2021-12-04T04:35:32ZRipening of two-dimensional colloidal CdSe nanocrystals into zero-dimensional nanodots2589-004210.1016/j.isci.2021.103457https://doaj.org/article/7241ee4d47d44525984c06077006427f2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2589004221014280https://doaj.org/toc/2589-0042Summary: Understanding the ripening of two-dimensional (2D) colloidal nanocrystals (NCs) is important for the controllable synthesis of NCs with desired morphology and properties. In this study, we systematically investigate the ripening behavior of the 2D CdSe NCs in the presence of a short-chain acetate ligand and a long-chain oleate ligand. We find that a low acetate/oleate ratio, a low Cd/Se ratio, and a low monomer concentration help in the ripening of the 2D NCs to form 0D NCs. Moreover, a porous nanosheet intermediate is observed when there is a high Cd/Se ratio, whereas in the case of a low Cd/Se ratio, the ripening starts from the edge of the nanosheets, resulting in a saw-like nanosheet intermediate. These findings provide necessary insights into the growth and ripening of 2D CdSe NCs that allow for the controlled synthesis of 0D and 2D CdSe NCs.Xiaopeng HuangVirendra K. ParasharMartin A.M. GijsElsevierarticleNanoparticlesColloidsNanomaterialsScienceQENiScience, Vol 24, Iss 12, Pp 103457- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Nanoparticles Colloids Nanomaterials Science Q
spellingShingle	Nanoparticles Colloids Nanomaterials Science Q Xiaopeng Huang Virendra K. Parashar Martin A.M. Gijs Ripening of two-dimensional colloidal CdSe nanocrystals into zero-dimensional nanodots
description	Summary: Understanding the ripening of two-dimensional (2D) colloidal nanocrystals (NCs) is important for the controllable synthesis of NCs with desired morphology and properties. In this study, we systematically investigate the ripening behavior of the 2D CdSe NCs in the presence of a short-chain acetate ligand and a long-chain oleate ligand. We find that a low acetate/oleate ratio, a low Cd/Se ratio, and a low monomer concentration help in the ripening of the 2D NCs to form 0D NCs. Moreover, a porous nanosheet intermediate is observed when there is a high Cd/Se ratio, whereas in the case of a low Cd/Se ratio, the ripening starts from the edge of the nanosheets, resulting in a saw-like nanosheet intermediate. These findings provide necessary insights into the growth and ripening of 2D CdSe NCs that allow for the controlled synthesis of 0D and 2D CdSe NCs.
format	article
author	Xiaopeng Huang Virendra K. Parashar Martin A.M. Gijs
author_facet	Xiaopeng Huang Virendra K. Parashar Martin A.M. Gijs
author_sort	Xiaopeng Huang
title	Ripening of two-dimensional colloidal CdSe nanocrystals into zero-dimensional nanodots
title_short	Ripening of two-dimensional colloidal CdSe nanocrystals into zero-dimensional nanodots
title_full	Ripening of two-dimensional colloidal CdSe nanocrystals into zero-dimensional nanodots
title_fullStr	Ripening of two-dimensional colloidal CdSe nanocrystals into zero-dimensional nanodots
title_full_unstemmed	Ripening of two-dimensional colloidal CdSe nanocrystals into zero-dimensional nanodots
title_sort	ripening of two-dimensional colloidal cdse nanocrystals into zero-dimensional nanodots
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/7241ee4d47d44525984c06077006427f
work_keys_str_mv	AT xiaopenghuang ripeningoftwodimensionalcolloidalcdsenanocrystalsintozerodimensionalnanodots AT virendrakparashar ripeningoftwodimensionalcolloidalcdsenanocrystalsintozerodimensionalnanodots AT martinamgijs ripeningoftwodimensionalcolloidalcdsenanocrystalsintozerodimensionalnanodots
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Ripening of two-dimensional colloidal CdSe nanocrystals into zero-dimensional nanodots

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