Defect induced photoluminescence and ferromagnetic properties of bio-compatible SWCNT/Ni hybrid bundles

Vinay Gupta; Bipin Kumar Gupta; R. K. Kotnala; T. N. Narayanan; Vaneet Grover; Jyoti Shah; Vikash Agrawal; Suresh Chand; Virendra Shanker

doi:10.1016/j.jcis.2011.06.074

Defect induced photoluminescence and ferromagnetic properties of bio-compatible SWCNT/Ni hybrid bundles

Vinay Gupta
, Bipin Kumar Gupta
, R. K. Kotnala
, T. N. Narayanan
, Vaneet Grover
, Jyoti Shah
, Vikash Agrawal
, Suresh Chand
, Virendra Shanker

Physics

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

8 Scopus citations

Abstract

Designing of bio-compatible nanomagnets with multiple functionalities receives immense scientific attention due to their potential applications in bio-labeling, medical diagnosis and treatment. Here we report the synthesis of Nickel (Ni) incorporated single-walled carbon nanotube (SWCNT) hybrid and bio-compatible bundles having interesting magnetic and photoluminescence (PL) properties. The SWCNT exhibits a high-crystallinity and it has an average diameter of ~1.7. nm. Ni particles of 10-20. nm were incorporated within the SWCNT bundles. These hybrid bundles exhibit PL and it is attributed to the presence of delocalized π electrons and their recombination at the defective sites of SWCNT. Magnetic characterization revealed that the SWCNT/Ni hybrid bundle possesses a high (50. Oe) coercivity compared to bulk Ni and a long range ferromagnetic ordering at room temperature. MTT-assay has been conducted to study the cytotoxicity of these hybrid nanostructures.

Original language	British English
Pages (from-to)	311-316
Number of pages	6
Journal	Journal of Colloid and Interface Science
Volume	362
Issue number	2
DOIs	https://doi.org/10.1016/j.jcis.2011.06.074
State	Published - 15 Oct 2011

Keywords

Biocompatibility
Ferromagnetic
Hybrid nanostructures
Nickel
Photoluminescence
SWCNT

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title = "Defect induced photoluminescence and ferromagnetic properties of bio-compatible SWCNT/Ni hybrid bundles",

abstract = "Designing of bio-compatible nanomagnets with multiple functionalities receives immense scientific attention due to their potential applications in bio-labeling, medical diagnosis and treatment. Here we report the synthesis of Nickel (Ni) incorporated single-walled carbon nanotube (SWCNT) hybrid and bio-compatible bundles having interesting magnetic and photoluminescence (PL) properties. The SWCNT exhibits a high-crystallinity and it has an average diameter of \textasciitilde{}1.7. nm. Ni particles of 10-20. nm were incorporated within the SWCNT bundles. These hybrid bundles exhibit PL and it is attributed to the presence of delocalized π electrons and their recombination at the defective sites of SWCNT. Magnetic characterization revealed that the SWCNT/Ni hybrid bundle possesses a high (50. Oe) coercivity compared to bulk Ni and a long range ferromagnetic ordering at room temperature. MTT-assay has been conducted to study the cytotoxicity of these hybrid nanostructures.",

keywords = "Biocompatibility, Ferromagnetic, Hybrid nanostructures, Nickel, Photoluminescence, SWCNT",

author = "Vinay Gupta and Gupta, \{Bipin Kumar\} and Kotnala, \{R. K.\} and Narayanan, \{T. N.\} and Vaneet Grover and Jyoti Shah and Vikash Agrawal and Suresh Chand and Virendra Shanker",

note = "Funding Information: B.K.Gupta thanks financial support from Indo-US Science and Technology Forum (IUSSTF): Award No. Indo-US Research Fellowship/2010-2011/25-2010. The author{\textquoteright}s gratefully acknowledge Mr. K. N. Sood and Mr. Jay Tawale of NPL-India for extending SEM facilities to carryout this work. ",

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AU - Gupta, Vinay

AU - Gupta, Bipin Kumar

AU - Kotnala, R. K.

AU - Narayanan, T. N.

AU - Grover, Vaneet

AU - Shah, Jyoti

AU - Agrawal, Vikash

AU - Chand, Suresh

AU - Shanker, Virendra

N1 - Funding Information: B.K.Gupta thanks financial support from Indo-US Science and Technology Forum (IUSSTF): Award No. Indo-US Research Fellowship/2010-2011/25-2010. The author’s gratefully acknowledge Mr. K. N. Sood and Mr. Jay Tawale of NPL-India for extending SEM facilities to carryout this work.

PY - 2011/10/15

Y1 - 2011/10/15

N2 - Designing of bio-compatible nanomagnets with multiple functionalities receives immense scientific attention due to their potential applications in bio-labeling, medical diagnosis and treatment. Here we report the synthesis of Nickel (Ni) incorporated single-walled carbon nanotube (SWCNT) hybrid and bio-compatible bundles having interesting magnetic and photoluminescence (PL) properties. The SWCNT exhibits a high-crystallinity and it has an average diameter of ~1.7. nm. Ni particles of 10-20. nm were incorporated within the SWCNT bundles. These hybrid bundles exhibit PL and it is attributed to the presence of delocalized π electrons and their recombination at the defective sites of SWCNT. Magnetic characterization revealed that the SWCNT/Ni hybrid bundle possesses a high (50. Oe) coercivity compared to bulk Ni and a long range ferromagnetic ordering at room temperature. MTT-assay has been conducted to study the cytotoxicity of these hybrid nanostructures.

AB - Designing of bio-compatible nanomagnets with multiple functionalities receives immense scientific attention due to their potential applications in bio-labeling, medical diagnosis and treatment. Here we report the synthesis of Nickel (Ni) incorporated single-walled carbon nanotube (SWCNT) hybrid and bio-compatible bundles having interesting magnetic and photoluminescence (PL) properties. The SWCNT exhibits a high-crystallinity and it has an average diameter of ~1.7. nm. Ni particles of 10-20. nm were incorporated within the SWCNT bundles. These hybrid bundles exhibit PL and it is attributed to the presence of delocalized π electrons and their recombination at the defective sites of SWCNT. Magnetic characterization revealed that the SWCNT/Ni hybrid bundle possesses a high (50. Oe) coercivity compared to bulk Ni and a long range ferromagnetic ordering at room temperature. MTT-assay has been conducted to study the cytotoxicity of these hybrid nanostructures.

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Defect induced photoluminescence and ferromagnetic properties of bio-compatible SWCNT/Ni hybrid bundles

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