Visualization of weak interactions between quantum dot and graphene in hybrid materials

Abstract The mechanisms of the weak interactions within hybrid materials such as quantum dot (QD) and graphene (GR) have important implications for the design of related optoelectronic devices. We characterize the weak interactions in hybrid QD-GR systems using a non-covalent interactions approach....

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Autores principales:	Shuo Cao, Jingang Wang, Yong Ding, Mengtao Sun, Fengcai Ma
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/206d1f8c075e435e87f8ba2c16237319
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spelling	oai:doaj.org-article:206d1f8c075e435e87f8ba2c162373192021-12-02T11:40:31ZVisualization of weak interactions between quantum dot and graphene in hybrid materials10.1038/s41598-017-00542-92045-2322https://doaj.org/article/206d1f8c075e435e87f8ba2c162373192017-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00542-9https://doaj.org/toc/2045-2322Abstract The mechanisms of the weak interactions within hybrid materials such as quantum dot (QD) and graphene (GR) have important implications for the design of related optoelectronic devices. We characterize the weak interactions in hybrid QD-GR systems using a non-covalent interactions approach. For a single Cd13Se13 QD with a core-cage structure, the intensity of the steric repulsive strain in every Cd-Se spatial four-atom ring of the cage surface is stronger than that of the inter-core-cage structure. Van der Waals (vdW) interactions occur within the cavity of the cage and within the six-atom rings of the cage surface. The spatial repulsion strain and attractive interactions play a key role in stabilizing the structure of the monolayer graphene. Interestingly, the spatial six-atom ring of the single QD change into spatial four-atom rings of the QD in the hybrid system, accompanied by the translation of vdW interactions into steric repulsive interactions. We conclude that the vdW interactions with π extensions and the weak attractive interactions within local areas between the QD and graphene together stabilize the integral structure of the hybrid QD-GR system. These results explain of the formation mechanism and the stabilization of the components in QD-GR hybrid materials.Shuo CaoJingang WangYong DingMengtao SunFengcai MaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shuo Cao Jingang Wang Yong Ding Mengtao Sun Fengcai Ma Visualization of weak interactions between quantum dot and graphene in hybrid materials
description	Abstract The mechanisms of the weak interactions within hybrid materials such as quantum dot (QD) and graphene (GR) have important implications for the design of related optoelectronic devices. We characterize the weak interactions in hybrid QD-GR systems using a non-covalent interactions approach. For a single Cd13Se13 QD with a core-cage structure, the intensity of the steric repulsive strain in every Cd-Se spatial four-atom ring of the cage surface is stronger than that of the inter-core-cage structure. Van der Waals (vdW) interactions occur within the cavity of the cage and within the six-atom rings of the cage surface. The spatial repulsion strain and attractive interactions play a key role in stabilizing the structure of the monolayer graphene. Interestingly, the spatial six-atom ring of the single QD change into spatial four-atom rings of the QD in the hybrid system, accompanied by the translation of vdW interactions into steric repulsive interactions. We conclude that the vdW interactions with π extensions and the weak attractive interactions within local areas between the QD and graphene together stabilize the integral structure of the hybrid QD-GR system. These results explain of the formation mechanism and the stabilization of the components in QD-GR hybrid materials.
format	article
author	Shuo Cao Jingang Wang Yong Ding Mengtao Sun Fengcai Ma
author_facet	Shuo Cao Jingang Wang Yong Ding Mengtao Sun Fengcai Ma
author_sort	Shuo Cao
title	Visualization of weak interactions between quantum dot and graphene in hybrid materials
title_short	Visualization of weak interactions between quantum dot and graphene in hybrid materials
title_full	Visualization of weak interactions between quantum dot and graphene in hybrid materials
title_fullStr	Visualization of weak interactions between quantum dot and graphene in hybrid materials
title_full_unstemmed	Visualization of weak interactions between quantum dot and graphene in hybrid materials
title_sort	visualization of weak interactions between quantum dot and graphene in hybrid materials
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/206d1f8c075e435e87f8ba2c16237319
work_keys_str_mv	AT shuocao visualizationofweakinteractionsbetweenquantumdotandgrapheneinhybridmaterials AT jingangwang visualizationofweakinteractionsbetweenquantumdotandgrapheneinhybridmaterials AT yongding visualizationofweakinteractionsbetweenquantumdotandgrapheneinhybridmaterials AT mengtaosun visualizationofweakinteractionsbetweenquantumdotandgrapheneinhybridmaterials AT fengcaima visualizationofweakinteractionsbetweenquantumdotandgrapheneinhybridmaterials
_version_	1718395567958130688

Visualization of weak interactions between quantum dot and graphene in hybrid materials

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