Towards improved precision in the quantification of surface-enhanced Raman scattering (SERS) enhancement factors: A renewed approach
Sivanesan, Arumugam, Adamkiewicz, Witold, Kalaivani, Govindasamy, Kamińska, Agnieszka, Waluk, Jacek, Hołyst, Robert, & Izake, Emad L. (2015) Towards improved precision in the quantification of surface-enhanced Raman scattering (SERS) enhancement factors: A renewed approach. The Analyst, 140(2), pp. 489-496.
This paper demonstrates a renewed procedure for the quantification of surface-enhanced Raman scattering (SERS) enhancement factors with improved precision. The principle of this method relies on deducting the resonance Raman scattering (RRS) contribution from surface-enhanced resonance Raman scattering (SERRS) to end up with the surface enhancement (SERS) effect alone. We employed 1,8,15,22-tetraaminophthalocyanato-cobalt(II) (4α-CoIITAPc), a resonance Raman- and electrochemically redox-active chromophore, as a probe molecule for RRS and SERRS experiments. The number of 4α-CoIITAPc molecules contributing to RRS and SERRS phenomena on plasmon inactive glassy carbon (GC) and plasmon active GC/Au surfaces, respectively, has been precisely estimated by cyclic voltammetry experiments. Furthermore, the SERS substrate enhancement factor (SSEF) quantified by our approach is compared with the traditionally employed methods. We also demonstrate that the present approach of SSEF quantification can be applied for any kind of different SERS substrates by choosing an appropriate laser line and probe molecule.
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|Item Type:||Journal Article|
|Additional Information:||First published online 21 Oct 2014|
|Divisions:||Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Deposited On:||09 Nov 2014 23:00|
|Last Modified:||24 Jun 2015 23:35|
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