Gupta, Vinay and Gupta, Bipin Kumar and Kotnala, R. K. and Narayanan, T. N. and Grover, Vaneet and Shah, Jyoti and Agrawal, Vikash and Chanda, Suresh and Shanker, Virendra (2011) Defect induced photoluminescence and ferromagnetic properties of bio-compatible SWCNT/Ni hybrid bundles. Journal of Colloid and Interface Science , 362 (2). pp. 311-316. ISSN 0021-9797

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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.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s Elsevier B.V.
Uncontrolled Keywords: SWCNT; Nickel; Hybrid nanostructures; Photoluminescence; Ferromagnetic; Biocompatibility
Subjects: Chemistry
Chemistry > Physical Chemistry
Divisions: UNSPECIFIED
Depositing User: Abhishek Yadav
Date Deposited: 22 Nov 2012 08:21
Last Modified: 22 Nov 2012 08:21
URI: http://npl.csircentral.net/id/eprint/834

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