Controlling the transverse proton relaxivity of magnetic graphene oxide

Abstract The engineering of materials with controlled magnetic properties by means other than a magnetic field is of great interest in nanotechnology. In this study, we report engineered magnetic graphene oxide (MGO) in the nanocomposite form of iron oxide nanoparticles (IO)-graphene oxide (GO) with...

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Autores principales:	Bibek Thapa, Daysi Diaz-Diestra, Dayra Badillo-Diaz, Rohit Kumar Sharma, Kiran Dasari, Shalini Kumari, Mikel B. Holcomb, Juan Beltran-Huarac, Brad R. Weiner, Gerardo Morell
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6bd395a6aff64c12ac4729ed2a5c3f21
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spelling	oai:doaj.org-article:6bd395a6aff64c12ac4729ed2a5c3f212021-12-02T15:09:46ZControlling the transverse proton relaxivity of magnetic graphene oxide10.1038/s41598-019-42093-12045-2322https://doaj.org/article/6bd395a6aff64c12ac4729ed2a5c3f212019-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-42093-1https://doaj.org/toc/2045-2322Abstract The engineering of materials with controlled magnetic properties by means other than a magnetic field is of great interest in nanotechnology. In this study, we report engineered magnetic graphene oxide (MGO) in the nanocomposite form of iron oxide nanoparticles (IO)-graphene oxide (GO) with tunable core magnetism and magnetic resonance transverse relaxivity (r2). These tunable properties are obtained by varying the IO content on GO. The MGO series exhibits r2 values analogous to those observed in conventional single core and cluster forms of IO in different size regimes—motional averaging regime (MAR), static dephasing regime (SDR), and echo-limiting regime (ELR) or slow motion regime (SMR). The maximum r2 of 162 ± 5.703 mM−1s−1 is attained for MGO with 28 weight percent (wt%) content of IO on GO and hydrodynamic diameter of 414 nm, which is associated with the SDR. These findings demonstrate the clear potential of magnetic graphene oxide for magnetic resonance imaging (MRI) applications.Bibek ThapaDaysi Diaz-DiestraDayra Badillo-DiazRohit Kumar SharmaKiran DasariShalini KumariMikel B. HolcombJuan Beltran-HuaracBrad R. WeinerGerardo MorellNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-11 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Bibek Thapa Daysi Diaz-Diestra Dayra Badillo-Diaz Rohit Kumar Sharma Kiran Dasari Shalini Kumari Mikel B. Holcomb Juan Beltran-Huarac Brad R. Weiner Gerardo Morell Controlling the transverse proton relaxivity of magnetic graphene oxide
description	Abstract The engineering of materials with controlled magnetic properties by means other than a magnetic field is of great interest in nanotechnology. In this study, we report engineered magnetic graphene oxide (MGO) in the nanocomposite form of iron oxide nanoparticles (IO)-graphene oxide (GO) with tunable core magnetism and magnetic resonance transverse relaxivity (r2). These tunable properties are obtained by varying the IO content on GO. The MGO series exhibits r2 values analogous to those observed in conventional single core and cluster forms of IO in different size regimes—motional averaging regime (MAR), static dephasing regime (SDR), and echo-limiting regime (ELR) or slow motion regime (SMR). The maximum r2 of 162 ± 5.703 mM−1s−1 is attained for MGO with 28 weight percent (wt%) content of IO on GO and hydrodynamic diameter of 414 nm, which is associated with the SDR. These findings demonstrate the clear potential of magnetic graphene oxide for magnetic resonance imaging (MRI) applications.
format	article
author	Bibek Thapa Daysi Diaz-Diestra Dayra Badillo-Diaz Rohit Kumar Sharma Kiran Dasari Shalini Kumari Mikel B. Holcomb Juan Beltran-Huarac Brad R. Weiner Gerardo Morell
author_facet	Bibek Thapa Daysi Diaz-Diestra Dayra Badillo-Diaz Rohit Kumar Sharma Kiran Dasari Shalini Kumari Mikel B. Holcomb Juan Beltran-Huarac Brad R. Weiner Gerardo Morell
author_sort	Bibek Thapa
title	Controlling the transverse proton relaxivity of magnetic graphene oxide
title_short	Controlling the transverse proton relaxivity of magnetic graphene oxide
title_full	Controlling the transverse proton relaxivity of magnetic graphene oxide
title_fullStr	Controlling the transverse proton relaxivity of magnetic graphene oxide
title_full_unstemmed	Controlling the transverse proton relaxivity of magnetic graphene oxide
title_sort	controlling the transverse proton relaxivity of magnetic graphene oxide
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/6bd395a6aff64c12ac4729ed2a5c3f21
work_keys_str_mv	AT bibekthapa controllingthetransverseprotonrelaxivityofmagneticgrapheneoxide AT daysidiazdiestra controllingthetransverseprotonrelaxivityofmagneticgrapheneoxide AT dayrabadillodiaz controllingthetransverseprotonrelaxivityofmagneticgrapheneoxide AT rohitkumarsharma controllingthetransverseprotonrelaxivityofmagneticgrapheneoxide AT kirandasari controllingthetransverseprotonrelaxivityofmagneticgrapheneoxide AT shalinikumari controllingthetransverseprotonrelaxivityofmagneticgrapheneoxide AT mikelbholcomb controllingthetransverseprotonrelaxivityofmagneticgrapheneoxide AT juanbeltranhuarac controllingthetransverseprotonrelaxivityofmagneticgrapheneoxide AT bradrweiner controllingthetransverseprotonrelaxivityofmagneticgrapheneoxide AT gerardomorell controllingthetransverseprotonrelaxivityofmagneticgrapheneoxide
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Controlling the transverse proton relaxivity of magnetic graphene oxide

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