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Size effect of 3D aggregates assembled from silver nanoparticles on surface-enhanced Raman scattering.
Chemphyschem. 2009 Feb 23; 10(3):537-42.C

Abstract

The size influence of 3D silver nanoparticle aggregates on surface-enhanced Raman scattering (SERS) is investigated. Micrometer- and nanometer-sized wells prepared on a polydimethylsiloxane (PDMS) surfaces are filled with cetyltrimethylammonium bromide (CTAB)-coated silver nanoparticles. A concentration of CTAB around its critical micelle concentration is used not only to form a bilayerlike structure around the nanoparticles and thus generate nanometer-sized gaps in the aggregates, but also to improve the compatibility of the surface charge properties of the silver nanoparticles with the surface of PDMS and thus successfully fill the wells by assembly of silver nanoparticles into 3D structures. A resonance-free enhancement factor of 10(7) can be easily achieved on larger aggregates, and the enhancement factor increases with decreasing size of the 3D aggregates, which is contrary to reported studies on conventional silver clusters. We find that the number of silver nanoparticles in the 3D aggregate should be less than 200-300 for optimal SERS performance.

Authors+Show Affiliations

Yeditepe University, Faculty of Engineering and Architecture, Department of Genetics and Bioengineering, 34755 Kayisdagi-Istanbul, Turkey.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19145610

Citation

Kahraman, Mehmet, et al. "Size Effect of 3D Aggregates Assembled From Silver Nanoparticles On Surface-enhanced Raman Scattering." Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry, vol. 10, no. 3, 2009, pp. 537-42.
Kahraman M, Aydin O, Culha M. Size effect of 3D aggregates assembled from silver nanoparticles on surface-enhanced Raman scattering. Chemphyschem. 2009;10(3):537-42.
Kahraman, M., Aydin, O., & Culha, M. (2009). Size effect of 3D aggregates assembled from silver nanoparticles on surface-enhanced Raman scattering. Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry, 10(3), 537-42. https://doi.org/10.1002/cphc.200800740
Kahraman M, Aydin O, Culha M. Size Effect of 3D Aggregates Assembled From Silver Nanoparticles On Surface-enhanced Raman Scattering. Chemphyschem. 2009 Feb 23;10(3):537-42. PubMed PMID: 19145610.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Size effect of 3D aggregates assembled from silver nanoparticles on surface-enhanced Raman scattering. AU - Kahraman,Mehmet, AU - Aydin,Omer, AU - Culha,Mustafa, PY - 2009/1/16/entrez PY - 2009/1/16/pubmed PY - 2009/1/16/medline SP - 537 EP - 42 JF - Chemphyschem : a European journal of chemical physics and physical chemistry JO - Chemphyschem VL - 10 IS - 3 N2 - The size influence of 3D silver nanoparticle aggregates on surface-enhanced Raman scattering (SERS) is investigated. Micrometer- and nanometer-sized wells prepared on a polydimethylsiloxane (PDMS) surfaces are filled with cetyltrimethylammonium bromide (CTAB)-coated silver nanoparticles. A concentration of CTAB around its critical micelle concentration is used not only to form a bilayerlike structure around the nanoparticles and thus generate nanometer-sized gaps in the aggregates, but also to improve the compatibility of the surface charge properties of the silver nanoparticles with the surface of PDMS and thus successfully fill the wells by assembly of silver nanoparticles into 3D structures. A resonance-free enhancement factor of 10(7) can be easily achieved on larger aggregates, and the enhancement factor increases with decreasing size of the 3D aggregates, which is contrary to reported studies on conventional silver clusters. We find that the number of silver nanoparticles in the 3D aggregate should be less than 200-300 for optimal SERS performance. SN - 1439-7641 UR - https://www.unboundmedicine.com/medline/citation/19145610/Size_effect_of_3D_aggregates_assembled_from_silver_nanoparticles_on_surface_enhanced_Raman_scattering_ L2 - https://doi.org/10.1002/cphc.200800740 DB - PRIME DP - Unbound Medicine ER -
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