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Raman and Photoluminescence Spectroscopic Study of 1-Undecene Functionalized Nanodiamonds

Lookup NU author(s): Yayuk Astuti, Dr Nigel Poolton, Professor Lidija Siller

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Abstract

© 2013 Materials Research Society. Nanodiamond holds great interest in a variety of optical applications, the properties being correlated with surface modification, and the presence of both impurities and defects (contained either on their surface or within the crystal structure). Undecyl-nanodiamond produced by attachment of 1-undecene onto the nanodiamond surface could be a good candidate as a luminescent marker in the future; therefore, understanding of its optical properties is essential. In this work, the optical properties of the acid-purified nanodiamond and undecyl-nanodiamond were characterised using surface enhanced Raman spectroscopy (SERS) and photoluminescence spectroscopy. The results demonstrate that the characteristic diamond Raman signal at 1330 cm-1 was still observed after chemical surface modification, while the signal at ~1600 cm-1 (attributed to graphite bands) disappeared after the modification. Broad photoluminescence emission is detected in the range 1.5-2.5 eV (500-800 nm), as typically found for isolated nanodiamond; these emission bands became narrower with attachment of 1-undecene as compared to the sample without surface functionalisation. The observed emission could be related to structural disorder on the nanodiamond surface. The temperature dependence of the intensity, peak position and band widths of each sample has been characterised.


Publication metadata

Author(s): Astuti Y, Poolton NRJ, Siller L

Publication type: Article

Publication status: Published

Journal: Journal of K-Theory

Year: 2013

Volume: 1597

Issue: 1

Online publication date: 02/12/2013

ISSN (print): 1865-2433

ISSN (electronic): 1865-5394

Publisher: Cambridge University Press

URL: https://doi.org/10.1557/opl.2013.1151

DOI: 10.1557/opl.2013.1151


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