Silver nanoparticles with reduced graphene oxide for surface-enhanced vibrational spectroscopy of DNA constituents
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Composite of silver nanoparticles with reduced graphene oxide flakes is proposed for surface enhanced vibrational spectroscopy, particularly for detection of adenine and thymine as constituents of deoxyribonucleic acid. Composite was formed by original method implying simultaneous reduction of silver ions and graphene oxide by discharge plasma at the gas–liquid interface. Combination of nanosized silver with reduced graphene oxide provided greater enhancement of Raman light scattering and infrared light absorption in comparison with separately used components. Addition of the composite to water solutions of adenine and thymine allowed detection of these analytes at micromolar concentrations. Composite of nano-silver with reduced graphene oxide can be prospective for surface enhanced spectroscopy as an alternative to the expensive lithographically prepared noble metal substrates.
KeywordsSurface Enhanced Raman Scattering (SERS) Surface Enhanced InfraRed Absorption (SEIRA) Silver nanoparticles Reduced graphene oxide Adenine Thymine Discharge plasma
This work was supported by FP7 Marie Curie ILSES project no. 612620 and NATO SPS project NUKR.SFPP984702.
- Bilal M, Bilal M, Saleem M, Khurram M, Khan S, Ullah R, Ali H, Ahmed M, Shahzada S, Khan E (2017) Raman spectroscopy based investigation of molecular changes associated with an early stage of dengue virus infection. Laser Phys 27(4):045601. https://doi.org/10.1088/1555-6611/aa5a94 CrossRefGoogle Scholar
- Coblentz Society Spectral Collection (1987) No 6867 (Adenine), No 9740 (Thymine). https://webbook.nist.gov/cgi/cbook.cgi?ID=C73245&Units=SI&Type=IR-SPEC&Index=1#IR-SPEC. https://webbook.nist.gov/cgi/cbook.cgi?ID=C65714&Units=SI&Mask=80#IR-Spec. Accessed 4 Dec 2018
- Li M, Huang L, Wang X, Song Z, Zhao W, Wang Y, Liu J (2018) Direct generation of Ag nanoclusters on reduced graphene oxide nanosheets for efficient catalysis, antibacteria and photothermal anticancer applications. J Colloid Interface Sci 529:444–451. https://doi.org/10.1016/j.jcis.2018.06.028 CrossRefGoogle Scholar
- Sathe V, Parimaladevi R, Mahalingam U (2019) Graphene boosted silver nanoparticles as surface enhanced Raman spectroscopic sensors and photocatalysts for removal of standard and industrial dye contaminants. Sens Actuators B Chem 281:679–688. https://doi.org/10.1016/j.snb.2018.11.007 CrossRefGoogle Scholar
- Theophanides T (1978) Infrared and Raman spectroscopy of biological molecules. Springer, DordrechtGoogle Scholar
- Treshchalov A, Erikson H, Puust L, Tsarenko S, Saar R, Vanetsev A, Tammeveski K, Sildos I (2016b) Stabilizer-free silver nanoparticles as efficient catalysts for electrochemical reduction of oxygen. J Colloid Interface Sci 491:358–366. https://doi.org/10.1016/j.jcis.2016.12.053 CrossRefGoogle Scholar