TY - JOUR

T1 - Hybrid Structures for Surface-Enhanced Raman Scattering

T2 - DNA Origami/Gold Nanoparticle Dimer/Graphene

AU - Prinz, Julia

AU - Matkovic, Aleksandar

AU - Pesic, Jelena

AU - Gajić, Radoš

AU - Bald, Ilko

PY - 2016/10/4

Y1 - 2016/10/4

N2 - A combination of three innovative materials within one hybrid structure to explore the synergistic interaction of their individual properties is presented. The unique electronic, mechanical, and thermal properties of graphene are combined with the plasmonic properties of gold nanoparticle (AuNP) dimers, which are assembled using DNA origami nanostructures. This novel hybrid structure is characterized by means of correlated atomic force microscopy and surface-enhanced Raman scattering (SERS). It is demonstrated that strong interactions between graphene and AuNPs result in superior SERS performance of the hybrid structure compared to their individual components. This is particularly evident in efficient fluorescence quenching, reduced background, and a decrease of the photobleaching rate up to one order of magnitude. The versatility of DNA origami structures to serve as interface for complex and precise arrangements of nanoparticles and other functional entities provides the basis to further exploit the potential of the here presented DNA origami–AuNP dimer–graphene hybrid structures.

AB - A combination of three innovative materials within one hybrid structure to explore the synergistic interaction of their individual properties is presented. The unique electronic, mechanical, and thermal properties of graphene are combined with the plasmonic properties of gold nanoparticle (AuNP) dimers, which are assembled using DNA origami nanostructures. This novel hybrid structure is characterized by means of correlated atomic force microscopy and surface-enhanced Raman scattering (SERS). It is demonstrated that strong interactions between graphene and AuNPs result in superior SERS performance of the hybrid structure compared to their individual components. This is particularly evident in efficient fluorescence quenching, reduced background, and a decrease of the photobleaching rate up to one order of magnitude. The versatility of DNA origami structures to serve as interface for complex and precise arrangements of nanoparticles and other functional entities provides the basis to further exploit the potential of the here presented DNA origami–AuNP dimer–graphene hybrid structures.

KW - SERS

KW - graphene

KW - DNA origami

U2 - 10.1002/smll.201601908

DO - 10.1002/smll.201601908

M3 - Article

VL - 12.2016

SP - 5458

EP - 5467

JO - Small

JF - Small

SN - 1613-6810

IS - 39

M1 - 201601908

ER -