Ultrasensitive and Remote SERS Enabled by Oxygen-free Integrated Plasmonic Field Transmission

Nganou, Collins; Carrier, Andrew; Yang, Dongchang; Chen, Yongli; Yu, Naizhen; Richards, D. Douglas; Bennett, Craig; Oakes, Ken D.; Zhang, Xu

doi:10.1016/j.xcrp.2020.100189

Cited by 7 publications

(3 citation statements)

References 32 publications

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“…[ 24 ] Dissolved oxygen removal also facilitates long‐range plasmonic field transmission, which leads to a zeptomolar sensitivity via remote SERS. [ 13 ] Considering this context, we decided to explore the plasmonic transport character of 3D‐POWER.…”

Section: Resultsmentioning

confidence: 99%

“…[ 8 , 9 , 10 , 11 , 12 ] In practice, single molecule SERS is generally carried out with limits of detection from the nanomolar to the picomolar range. [ 13 , 14 , 15 ] Therefore, the capability to increase hot spot allocation is highly desirable in ultrasensitive or single molecule SERS. In addition, accurate delivery and SERS signal collection of a single molecule within a hot spot is generally challenging and/or time‐consuming.…”

Section: Introductionmentioning

confidence: 99%

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Flexible 3D Plasmonic Web Enables Remote Surface Enhanced Raman Spectroscopy

Rodríguez‐Sevilla,

Álvarez‐Martínez,

Castro‐Beltrán

et al. 2024

Advanced Science

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Nanoplasmonic materials concentrate light in specific regions of dramatic electromagnetic enhancement: hot spots. Such regions can be employed to perform single molecule detection via surface‐enhanced Raman spectroscopy. However, this phenomenon is challenging since hot spots are expected to be highly intense/abundant and positioning of molecules within such hot spots is crucial to manage with ultrasensitive SERS. Herein, it is discovered that a 3D plasmonic web embedded within a biohybrid (3D‐POWER) exhibits plasmonic transmission, spontaneously absorbs the analyte, and meets these so much needed criteria in ultrasensitive SERS. 3D‐POWER is built with nanopaper and self‐assembled layers of graphene oxide and gold nanorods. According to in silico experiments, 3D‐POWER captures light in a small region and performs plasmonic field transmission in a surrounding volume, thereby activating a plasmonic web throughout the simulated volume. The study also provides experimental evidence supporting the plasmonic field transport ability of 3D power, which operates as a SERS signal carrier (even beyond the apparatus field of view), and the ultrasensitive behavior of this ecofriendly and flexible material facilitating yoctomolar limit of detection. Besides, 3D‐POWER is proven useful in food and biofluids analysis. It is foreseen that 3D‐POWER can be employed as a valuable platform in (bio)analytical applications.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexible 3D Plasmonic Web Enables Remote Surface Enhanced Raman Spectroscopy

Rodríguez‐Sevilla,

Álvarez‐Martínez,

Castro‐Beltrán

et al. 2024

Advanced Science

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show abstract

“…[18,19] Para-nitrophenol (pNTP) which is a standard probing molecule containing strongly adsorbing thiol group was first employed to study the SERS activity of these ZnO@ZIF-8 nanoparticles. [20,21] As shown in Figure 2a, a strong pNTP peak at 1320 cm -1 can be observed on ZnO@ZIF-8 nanoparticles, but not on ZIF nanoparticles, suggesting that ZIF-8 nanoparticles are not SERS active and that the SERS activity of ZnO@ZIF-8 nanoparticles arose from their ZnO cores. The peak position was slightly shifted compared with its corresponding normal Raman peak at 1336 cm -1 , indicating that the signal enhancement arose from charge transfer resonance between pNTP molecules and ZnO cores.…”

Section: Resultsmentioning

confidence: 97%