Involvement of the LSPR Spectral Overlap for Energy Transfer between a Dye and Au Nanoparticle

Singh, Mukesh Kumar; Strouse, Geoffrey F.

doi:10.1021/ja1022128

Cited by 208 publications

(262 citation statements)

References 65 publications

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“…[18][19][20][21][22][23] The interaction of emitters with metallic nanospheres has been extensively studied, both theoretically [24][25][26][27][28][29][30][31][32][33][34][35][36] and experimentally. [37][38][39][40][41][42][43][44][45][46][47][48][49] There have been reports using different metallic NP size regimes and a variety of quantum dot and dye fluorophores. In Refs.…”

Section: Introductionmentioning

confidence: 99%

“…It is noted that experiments probing the spectral dependence by varying the quantum emitter wavelength are also susceptible to changes in the quantum yield. 41,45,46 The interaction between a quantum emitter and a metallic NP has also attracted theoretical interest, with both large and small NP considered. Anger et al reported an experimental and theoretical study of the change in the radiative and non-radiative rates of a single quantum emitter as a function of its separation from an 80 nm diameter Au NP, 24 whereas Carminati et al considered smaller Ag NP with a radius of 5 nm.…”

Section: Introductionmentioning

confidence: 99%

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A theoretical investigation of the influence of gold nanosphere size on the decay and energy transfer rates and efficiencies of quantum emitters

Marocico

Zhang

Bradley

2016

The Journal of Chemical Physics

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Articles you may be interested inWe present in this contribution a comprehensive investigation of the effect of the size of gold nanospheres on the decay and energy transfer rates of quantum systems placed close to these nanospheres. These phenomena have been investigated before, theoretically and experimentally, but no comprehensive study of the influence of the nanoparticle size on important dependences of the decay and energy transfer rates, such as the dependence on the donor-acceptor spectral overlap and the relative positions of the donor, acceptor, and nanoparticle, exists. As such, different accounts of the energy transfer mechanism have been presented in the literature. We perform an investigation of the energy transfer mechanisms between emitters and gold nanospheres and between donor-acceptor pairs in the presence of the gold nanospheres using a Green's tensor formalism, experimentally verified in our lab. We find that the energy transfer rate to small nanospheres is greatly enhanced, leading to a strong quenching of the emission of the emitter. When the nanosphere size is increased, it acts as an antenna, increasing the emission of the emitter. We also investigate the emission wavelength and intrinsic quantum yield dependence of the energy transfer to the nanosphere. As evidenced from the literature, the energy transfer process between the quantum system and the nanosphere can have a complicated distance dependence, with a r −6 regime, characteristic of the Förster energy transfer mechanism, but also exhibiting other distance dependences. In the case of a donor-acceptor pair of quantum systems in the presence of a gold nanosphere, when the donor couples strongly to the nanosphere, acting as an enhanced dipole; the donor-acceptor energy transfer rate then follows a Förster trend, with an increased Förster radius. The coupling of the acceptor to the nanosphere has a different distance dependence. The angular dependence of the energy transfer efficiency between donor and acceptor exhibits a strong focusing effect and the same enhanced donor-dipole character in different angular arrangements. The spectral overlap of the donor emission and acceptor absorption spectra shows that the energy transfer follows the near-field scattering efficiency, with a red-shift from the localized surface plasmon peak for small sphere sizes. C 2016 AIP Publishing LLC. [http://dx

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A theoretical investigation of the influence of gold nanosphere size on the decay and energy transfer rates and efficiencies of quantum emitters

Marocico

Zhang

Bradley

2016

The Journal of Chemical Physics

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“…The key differences are that FRET is a dipole-dipole type energy transfer with 1∕r 6 distance dependence, while NSET is a dipole-surface type energy transfer following 1∕r 4 distance dependence. [83][84][85] This sensor was very sensitive with a detection limit of 0.4 and 1.2 ppb toward Hg 2þ in the buffer solution and in the river water, respectively, values which satisfactorily meet the sensitive demands of U.S. Environmental Protection Agency (EPA) and World Health Organization (WHO).…”

Section: Nucleic Acidsmentioning

confidence: 75%

Analytical strategies based on quantum dots for heavy metal ions detection

Vázquez‐González

Carrillo‐Carrión

2014

J. Biomed. Opt

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Abstract. Heavy metal contamination is one of the major concerns to human health because these substances are toxic and retained by the ecological system. Therefore, in recent years, there has been a pressing need for fast and reliable methods for the analysis of heavy metal ions in environmental and biological samples. Quantum dots (QDs) have facilitated the development of sensitive sensors over the past decade, due to their unique photophysical properties, versatile surface chemistry and ligand binding ability, and the possibility of the encapsulation in different materials or attachment to different functional materials, while retaining their native luminescence property. This paper comments on different sensing strategies with QD for the most toxic heavy metal ions (i.e., cadmium, Cd 2þ ; mercury, Hg 2þ ; and lead, Pb 2þ ). Finally, the challenges and outlook for the QD-based sensors for heavy metals ions are discussed.

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“…The fluorescence quenching of fluorophore can be explained like the Förster energy transfer between two fuorophores that makes the fluorescence of the donor decrease. This energy transfer can be attributed to the surface energy transfer mechanism (SET) [17][18][19][20]. To investigate the recombination rates in the cases of enhancement and quenching fluorescence, the lifetime and quantum yield of the OBs solution with the presence of GNPs have been measured.…”

Section: Resultsmentioning

confidence: 99%

Influence of Surface Plasmon Resonance on Fluorescence Emission of Dye-doped Nanoparticles

Ha¹,

Brochon²,

Nhung³

2016

Comm. in Phys.

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Abstract. The influence of the surface plasmon of gold nanoparticles on the optical properties of the fluorescent nanoparticles in aqueous solution have been investigated. The fluorescence of nanoparticles can be enhanced or quenched in the presence of gold nanoparticles depending on the domination of energy transfer mechanisms: radiating surface plasmon coupling emission or Förster energy transfer from fluorescent particles to gold particles, which exciting absorbing plasmon. The fluorescence enhancement or quenching is attributed to the increase or decrease of radiative recombination rates, respectively. The parameters of the energy transfer between fluorescent nanoparticles (dye molecules encapsulated in silica nanoparticles) and nano golds have been estimated. The results show that the interactions between nanoparticles depend on the size of both fluorophores (as donors) and gold nanoparticles (as acceptors).

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Involvement of the LSPR Spectral Overlap for Energy Transfer between a Dye and Au Nanoparticle

Cited by 208 publications

References 65 publications

A theoretical investigation of the influence of gold nanosphere size on the decay and energy transfer rates and efficiencies of quantum emitters

A theoretical investigation of the influence of gold nanosphere size on the decay and energy transfer rates and efficiencies of quantum emitters

Analytical strategies based on quantum dots for heavy metal ions detection

Influence of Surface Plasmon Resonance on Fluorescence Emission of Dye-doped Nanoparticles

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