Plasmon-mediated fluorescence with distance independence: From model to a biosensing application

Cao, Shuo‐Hui; Zou, Zheguang; Weng, Yuhua; Cai, Wei-Peng; Liu, Qian; Li, Yao‐Qun

doi:10.1016/j.bios.2014.02.067

Cited by 21 publications

(8 citation statements)

References 59 publications

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“…When the fluorophores are near metal nanoparticles (NPs), their interactions cause the emitter to enhance fluorescence significantly (metal-enhanced fluorescence, MEF) (Lakowicz, 2001;Saboktakin et al, 2012;Cao et al, 2014). MEF is an emerging technology and has attracted significant attention as an optical platform in highly-sensitive bioassays for small bioactive molecules, proteins, and nucleic acids (Bharill et al, 2011;Li et al, 2012;Lee et al, 2011;Wang et al, 2015;Kinkhabwala et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

In situ induced metal-enhanced fluorescence: A new strategy for biosensing the total acetylcholinesterase activity in sub-microliter human whole blood

et al. 2015

Biosensors and Bioelectronics

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Section: Introductionmentioning

confidence: 99%

In situ induced metal-enhanced fluorescence: A new strategy for biosensing the total acetylcholinesterase activity in sub-microliter human whole blood

et al. 2015

Biosensors and Bioelectronics

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“…For metal-coated glass, when the polarization-matched excitation light is incident at an angle satisfying the resonance condition (θ SP , θ SP > θ C ), the fluorophores located in the near-field range of the metal film can be selectively excited by the evanescent field (defined as SPR excitation). The excited fluorophores can be coupled with surface plasmons to produce an enhanced fluorescence signal. − This surface plasmon-coupled emission (SPCE) is distance-dependent. ,− Studies have shown that the detection volume of SPCEM is limited by two near-field factors: one is the depth of the evanescent wave and the other is the coupling distance of surface plasmons. As a consequence, the effective detection depth of SPCEM is approximately 50 nm in the near-field (section 3, Supporting Information). ,, Thus, the fluorophores can be coupled to surface plasmons only if the fluorophore-substrate distance is less than the coupling distance of the SPCE.…”

Section: Results and Discussionmentioning

confidence: 99%

Variable-Angle Nanoplasmonic Fluorescence Microscopy: An Axially Resolved Method for Tracking the Endocytic Pathway

et al. 2019

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The study of endocytosis, which encompasses diverse mechanisms in biology, requires the utilization of high axial resolution to monitor molecular behavior on both the cell surface and interior of the cell. We have designed a novel axially resolved fluorescence microscopic technique, termed variable-angle nanoplasmonic fluorescence microscopy. The proof-of-principle of this approach is achieved by selectively following the events in the vicinity of a cell membrane or in a cell. We use a 30 nm Au-coated semitransparent coverslip as the nanoplasmonic chip to achieve both surface plasmon resonance excitation and critical angle excitation by tuning the incident angles. This approach leads to improved axial resolution compared to total internal reflection fluorescence microscopy, which is a common imaging technique in cell biology. It offers a unique opportunity to semiquantitatively determine fluorophore axial distributions in the cell. Observing the epidermal growth factor receptor-mediated endocytosis in Caski cells clearly demonstrates the potential application of this new method for cell biology studies.

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“…The spectral properties of distance-dependent SPCE are characterized in detail with a varying thickness of polymer matrix overlying a metallic surface. , To extend the spectrum utility in practical measurements, the excitation and emission spectra are recorded synchronously based on a polymer matrix to parse the spectra-dependent SPCE as shown in Figure . Here, the energy transitions for observation are screened actively on a 25 nm poly(methyl methacrylate) (PMMA) layer under different coupling modes, and the spectral information related to the silver-plasmonic interactions is first interpreted in detail through tuning vibrational energy levels.…”

Section: Practical Application Of Surface Plasmon-assisted Fluorescencementioning

confidence: 99%

Surface Plasmon-Assisted Fluorescence Enhancing and Quenching: From Theory to Application

Jiang

Gou

et al. 2021

ACS Appl. Bio Mater.

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The integration of surface plasmon resonance and fluorescence yields a multiaspect improvement in surface fluorescence sensing and imaging, leading to a paradigm shift of surface plasmonassisted fluorescence techniques, for example, surface plasmon enhanced field fluorescence spectroscopy, surface plasmon coupled emission (SPCE), and SPCE imaging. This Review aims to characterize the unique optical property with a common physical interpretation and diverse surface architecture-based measurements. The fundamental electromagnetic theory is employed to comprehensively unveil the fluorophore−surface plasmon interaction, and the associated surfacemodification design is liberally highlighted to balance the surface plasmon-induced fluorescence-enhancement efforts and the surface plasmon-caused fluorescence-quenching effects. In particular, all types of surface structures, for example, silicon, carbon, protein, DNA, polymer, and multilayer, are systematically interrogated in terms of component, thickness, stiffness, and functionality. As a highly interdisciplinary and expanding field in physics, optics, chemistry, and surface chemistry, this Review could be of great interest to a broad readership, in particular, among physical chemists, analytical chemists, and in surface-based sensing and imaging studies.

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Plasmon-mediated fluorescence with distance independence: From model to a biosensing application

Cited by 21 publications

References 59 publications

In situ induced metal-enhanced fluorescence: A new strategy for biosensing the total acetylcholinesterase activity in sub-microliter human whole blood

In situ induced metal-enhanced fluorescence: A new strategy for biosensing the total acetylcholinesterase activity in sub-microliter human whole blood

Variable-Angle Nanoplasmonic Fluorescence Microscopy: An Axially Resolved Method for Tracking the Endocytic Pathway

Surface Plasmon-Assisted Fluorescence Enhancing and Quenching: From Theory to Application

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