Facile synthesis of stable colloidal suspension of amorphous carbon nanoparticles in aqueous medium and their characterization

Tirusew Tegafaw; In Taek Oh; Hyunsil Cha; Huan Yue; Xu Miao; Son Long Ho; Mohammad Yaseen Ahmad; Shanti Marasini; Adibehalsadat Ghazanfari; Hee Kyung Kim; Kwon Seok Chae; Yongmin Chang; Gang Ho Lee

doi:10.1016/j.jpcs.2018.04.031

Facile synthesis of stable colloidal suspension of amorphous carbon nanoparticles in aqueous medium and their characterization

Tirusew Tegafaw, In Taek Oh, Hyunsil Cha, Huan Yue, Xu Miao, Son Long Ho, Mohammad Yaseen Ahmad, Shanti Marasini, Adibehalsadat Ghazanfari, Hee Kyung Kim, Kwon Seok Chae, Yongmin Chang, Gang Ho Lee

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

In this study, amorphous carbon nanoparticles (CNPs) with an average diameter of 2.2 nm were synthesized by reducing dextrose (C₆H₁₂O₆) with sodium hydroxide in an aqueous medium. The amorphous CNPs formed stable colloidal suspensions in water owing to the presence of hydrophilic functional groups on the nanoparticle surfaces. The amorphous CNPs exhibited ultraviolet (UV)-visible absorption (λ_abs) at 267 nm and emission (λ_em) at 453 nm under UV irradiation; thus, the colloidal suspension appeared sky-blue in color under UV irradiation. The amorphous CNPs were paramagnetic with weak magnetization at room temperature and exhibited small longitudinal (r₁) and transverse (r₂) water proton relaxivities of 0.036 and 0.068 s⁻¹mM⁻¹, respectively. The amorphous CNPs exhibited no cellular toxicity up to the measured carbon concentration of 500 μM and presented fluorescence microscopy images on a micrometer scale, thus demonstrating their utility in fluorescence bio-imaging applications.

Original language	English
Pages (from-to)	96-103
Number of pages	8
Journal	Journal of Physics and Chemistry of Solids
Volume	120
DOIs	https://doi.org/10.1016/j.jpcs.2018.04.031
State	Published - Sep 2018

Keywords

Amorphous carbon nanoparticle
Cellular toxicity
Fluorescence microscopy image
Magnetic property
Optical property

Access to Document

10.1016/j.jpcs.2018.04.031

Cite this

Tegafaw, T., Oh, I. T., Cha, H., Yue, H., Miao, X., Ho, S. L., Ahmad, M. Y., Marasini, S., Ghazanfari, A., Kim, H. K., Chae, K. S., Chang, Y., & Lee, G. H. (2018). Facile synthesis of stable colloidal suspension of amorphous carbon nanoparticles in aqueous medium and their characterization. Journal of Physics and Chemistry of Solids, 120, 96-103. https://doi.org/10.1016/j.jpcs.2018.04.031

@article{b8ddbc261c80499eb4aef63f31276d88,

title = "Facile synthesis of stable colloidal suspension of amorphous carbon nanoparticles in aqueous medium and their characterization",

abstract = "In this study, amorphous carbon nanoparticles (CNPs) with an average diameter of 2.2 nm were synthesized by reducing dextrose (C6H12O6) with sodium hydroxide in an aqueous medium. The amorphous CNPs formed stable colloidal suspensions in water owing to the presence of hydrophilic functional groups on the nanoparticle surfaces. The amorphous CNPs exhibited ultraviolet (UV)-visible absorption (λabs) at 267 nm and emission (λem) at 453 nm under UV irradiation; thus, the colloidal suspension appeared sky-blue in color under UV irradiation. The amorphous CNPs were paramagnetic with weak magnetization at room temperature and exhibited small longitudinal (r1) and transverse (r2) water proton relaxivities of 0.036 and 0.068 s−1mM−1, respectively. The amorphous CNPs exhibited no cellular toxicity up to the measured carbon concentration of 500 μM and presented fluorescence microscopy images on a micrometer scale, thus demonstrating their utility in fluorescence bio-imaging applications.",

keywords = "Amorphous carbon nanoparticle, Cellular toxicity, Fluorescence microscopy image, Magnetic property, Optical property",

author = "Tirusew Tegafaw and Oh, {In Taek} and Hyunsil Cha and Huan Yue and Xu Miao and Ho, {Son Long} and Ahmad, {Mohammad Yaseen} and Shanti Marasini and Adibehalsadat Ghazanfari and Kim, {Hee Kyung} and Chae, {Kwon Seok} and Yongmin Chang and Lee, {Gang Ho}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = sep,

doi = "10.1016/j.jpcs.2018.04.031",

language = "English",

volume = "120",

pages = "96--103",

journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

publisher = "Elsevier Ltd.",

}

Tegafaw, T, Oh, IT, Cha, H, Yue, H, Miao, X, Ho, SL, Ahmad, MY, Marasini, S, Ghazanfari, A, Kim, HK, Chae, KS , Chang, Y & Lee, GH 2018, 'Facile synthesis of stable colloidal suspension of amorphous carbon nanoparticles in aqueous medium and their characterization', Journal of Physics and Chemistry of Solids, vol. 120, pp. 96-103. https://doi.org/10.1016/j.jpcs.2018.04.031

TY - JOUR

T1 - Facile synthesis of stable colloidal suspension of amorphous carbon nanoparticles in aqueous medium and their characterization

AU - Tegafaw, Tirusew

AU - Oh, In Taek

AU - Cha, Hyunsil

AU - Yue, Huan

AU - Miao, Xu

AU - Ho, Son Long

AU - Ahmad, Mohammad Yaseen

AU - Marasini, Shanti

AU - Ghazanfari, Adibehalsadat

AU - Kim, Hee Kyung

AU - Chae, Kwon Seok

AU - Chang, Yongmin

AU - Lee, Gang Ho

PY - 2018/9

Y1 - 2018/9

N2 - In this study, amorphous carbon nanoparticles (CNPs) with an average diameter of 2.2 nm were synthesized by reducing dextrose (C6H12O6) with sodium hydroxide in an aqueous medium. The amorphous CNPs formed stable colloidal suspensions in water owing to the presence of hydrophilic functional groups on the nanoparticle surfaces. The amorphous CNPs exhibited ultraviolet (UV)-visible absorption (λabs) at 267 nm and emission (λem) at 453 nm under UV irradiation; thus, the colloidal suspension appeared sky-blue in color under UV irradiation. The amorphous CNPs were paramagnetic with weak magnetization at room temperature and exhibited small longitudinal (r1) and transverse (r2) water proton relaxivities of 0.036 and 0.068 s−1mM−1, respectively. The amorphous CNPs exhibited no cellular toxicity up to the measured carbon concentration of 500 μM and presented fluorescence microscopy images on a micrometer scale, thus demonstrating their utility in fluorescence bio-imaging applications.

AB - In this study, amorphous carbon nanoparticles (CNPs) with an average diameter of 2.2 nm were synthesized by reducing dextrose (C6H12O6) with sodium hydroxide in an aqueous medium. The amorphous CNPs formed stable colloidal suspensions in water owing to the presence of hydrophilic functional groups on the nanoparticle surfaces. The amorphous CNPs exhibited ultraviolet (UV)-visible absorption (λabs) at 267 nm and emission (λem) at 453 nm under UV irradiation; thus, the colloidal suspension appeared sky-blue in color under UV irradiation. The amorphous CNPs were paramagnetic with weak magnetization at room temperature and exhibited small longitudinal (r1) and transverse (r2) water proton relaxivities of 0.036 and 0.068 s−1mM−1, respectively. The amorphous CNPs exhibited no cellular toxicity up to the measured carbon concentration of 500 μM and presented fluorescence microscopy images on a micrometer scale, thus demonstrating their utility in fluorescence bio-imaging applications.

KW - Amorphous carbon nanoparticle

KW - Cellular toxicity

KW - Fluorescence microscopy image

KW - Magnetic property

KW - Optical property

UR - http://www.scopus.com/inward/record.url?scp=85046474732&partnerID=8YFLogxK

U2 - 10.1016/j.jpcs.2018.04.031

DO - 10.1016/j.jpcs.2018.04.031

M3 - Article

AN - SCOPUS:85046474732

SN - 0022-3697

VL - 120

SP - 96

EP - 103

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

ER -

Facile synthesis of stable colloidal suspension of amorphous carbon nanoparticles in aqueous medium and their characterization

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this