Plasmon–Exciton Coupling in Photosystem I Based Biohybrid Photoelectrochemical Cells

Zeng, Zheng; Mabe, Taylor; Zhang, Wendi; Bagra, Bhawna; Ji, Zuowei; Yin, Ziyu; Allado, Kokougan; Wei, Jianjun

doi:10.1021/acsabm.8b00249

Cited by 11 publications

(17 citation statements)

References 48 publications

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“…A previous report on EM field modeled using a finite-difference time-domain (FDTD) simulation (Figure S9) demonstrated the same order of EM field strength and surface light intensity measurement. (39) The difference of the fluorescence enhancement from the reflection light and the SPG efficiencies suggests additional energy-transfer process contributing to the fluorescence enhancement. Other than the aforementioned light trapping, there are a few energy-transfer mechanisms proposed for plasmonic enhancement, including fluorescence resonance energy transfer (FRET), (50) hot electron injection (direct electron transfer), and plasmon-induced resonance energy transfer (PIRET).…”

Section: Discussionmentioning

confidence: 99%

“…The SPG efficiency at one side of nanoslit aperture is calculated according to a semianalytical mode reported earlier. (38,39) The results of SPG analysis are shown in Figure S7b and Tables S5 and S6, which are used in the following discussion for comparison with the experimental results (Figure 5). The SP excitation is efficient at visible frequencies, while "e" decreases rapidly with an increase in wavelength.…”

Section: Spr Analysis Of Gold Nanoslitsmentioning

confidence: 99%

“…(37,38) Recently, we observed the plasmon-exciton coupling effect on light energy conversion to photocurrent by a system where photosystem I is embedded in plasmonic nanoslits and correlation to the SPG efficiency of the nanoslit-based photoelectrochemical cell. (39) In this study, a nanoslit design for fluorescence enhancement setup is used and fluorescence enhancement of CNDs in these plasmonic nanoslits is observed. The CNDs are immobilized in a nanoscale slit, and the nanoslit is illuminated with a light source for spectral and fluorescent imaging measurements (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

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Plasmon-Enhanced Fluorescence of Carbon Nanodots in Gold Nanoslit Cavities

et al. 2019

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Carbon nanodots (CNDs) are featured with a wide range of light absorption and excitationdependent fluorescence. The emission enhancement of CNDs is of great interest for the development of nanophotonics. Although the phenomenon of plasmon-enhanced fluorescence for quantum dots and molecular dyes has been well investigated, rarely has it been reported for CNDs. In this work, a series of plasmonic nanoslit designs were fabricated and utilized for immobilization of CNDs in nanoslits and examination of the best match for plasmonic fluorescence enhancement of CNDs. In concert, to better understand the plasmonic effect on the enhancement, the surface optical field is measured with or without CND immobilization using a hyperspectral imaging system as a comparison, and a semianalytical model is conducted for a quantitative analysis of surface plasmon generation under the plane-wave illumination. Both the fluorescence and surface reflection light intensity enhancement are demonstrated as a function of nanoslit width and are maximized at the 100 nm nanoslit width. The analysis of surface plasmon-exciton coupling of CNDs in the nanoslit area suggests that the enhancement is primarily due to plasmonic light trapping for increased electromagnetic field and plasmoninduced resonance energy transfer. This study suggests that incorporating CNDs in the plasmonic nanoslits may provide a largely enhanced CND-based photoemission system for optical applications.

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Section: Discussionmentioning

confidence: 99%

Section: Spr Analysis Of Gold Nanoslitsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Plasmon-Enhanced Fluorescence of Carbon Nanodots in Gold Nanoslit Cavities

et al. 2019

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“…Plasmonic excitations occurring in small nanoparticles provide an interesting avenue for light and energy manipulation below the diffraction limit. Collective excitations of the electrons in the nanoparticle can couple to nearby molecules, and applications in nano-optics [1][2][3][4] , nanosensing [5][6][7][8][9] , nanocatalysis 10-20 , plasmonic photosynthesis [21][22][23] , quantum information 24,25 and energy-harvesting technologies [26][27][28][29][30][31] have emerged.…”

Section: Introductionmentioning

confidence: 99%

Coupling, lifetimes and "strong coupling" maps for single molecules at plasmonic interfaces

Mondal,

Ochoa,

Sukharev

et al. 2021

Preprint

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The interaction between excited states of a molecule and excited states of metal nanostructure (e.g. plasmons) leads to hybrid states with modified optical properties.When plasmon resonance is swept through molecular transition frequency an avoided crossing may be observed, which is often regarded as a signature of strong coupling between plasmons and molecules. Such strong coupling is expected to be realized when 2|U |/ Γ > 1, where U and Γ are the molecule-plasmon coupling and the spectral width of the optical transition respectively. Because both U and Γ strongly increase with

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“…This Addition/Correction is a response to concerns regarding our published paper raised by authors of a paper titled “Plasmon Enhanced Photocurrent from Photosystems I Assembled on Ag Nanopyramids” in the Journal of Physical Chemistry Letters . Their first concern is that our paper is not the first direct experimental observation of plasmon-induced photocurrent enhancements from PSI.…”

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confidence: 99%