SERS Activity of Photoreduced Silver Chloride Crystals

Arpan Dutta*, Antti Matikainen, Sampson Andoh, Tarmo Nuutinen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

Metal nanoparticles are widely acclaimed as plasmonic substrates for surface -enhanced Raman spectroscopy (SERS) due to their unique particle plasmon resonances at visible and near infrared regions. Silver nanoparticles are typically employed in SERS when the targeted Raman signature zone of analytes lies at ultra-violet and/or blue to green spectral regimes. Even though silver has strong plasmonic properties, silver-based substrates are often affected by the atmospheric oxidation and show degradation in their SERS performance. One way to overcome this limitation is to use silver chloride crystals as oxidation resistant intermediate and photoreduce them to 'fresh' silver just before SERS analysis. In this work, we study the SERS activity of the photoreduced silver chloride crystals. We perform Raman analysis of three Raman active analytes, adenine, rhodamine 6G and riboflavin at both visible (514 nm) and near-infrared (785 nm) excitations. Our experimental outcomes show that such photoreduced silver chloride crystals can be exploited as SERS active substrates for both visible and near-infrared applications. Our numerical simulations reveal that these photoreduced silver chloride crystals are strong scatterers at multiple wavelengths and hence, could be very useful for plasmon-enhanced spectroscopic applications where multiple wavelengths are involved.

Original languageEnglish
Title of host publication3rd International Conference on Condensed Matter & Applied Physics (ICC 2019)
EditorsMS Shekhawat, S Bhardwaj, B Suthar
PublisherAmerican Institute of Physics
Number of pages6
ISBN (Electronic)978-0-7354-1976-6
DOIs
Publication statusPublished - 2020
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Condensed Matter & Applied Physics
- Bikaner, India
Duration: 14 Oct 201915 Oct 2019
Conference number: 2

Publication series

NameAIP Conference Proceedings
Volume2220
ISSN (Print)0094-243X
ISSN (Electronic)1935-0465

Conference

ConferenceInternational Conference on Condensed Matter & Applied Physics
Abbreviated titleICC
CountryIndia
CityBikaner
Period14/10/201915/10/2019

Keywords

  • ENHANCED RAMAN-SPECTROSCOPY

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