Synthesis and luminescence resonance energy transfer based on noble metal nanoparticles and the NaYF4:Tb3+ shell

2014 ◽  
Vol 16 (29) ◽  
pp. 15139-15145 ◽  
Author(s):  
Yan Song ◽  
Guixia Liu ◽  
Jinxian Wang ◽  
Xiangting Dong ◽  
Wensheng Yu
Keyword(s):  
Energy Transfer ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Noble Metal Nanoparticles ◽  
Core Shell ◽  
Highly Efficient ◽  
Spectral Overlap

The hybrid core–shell nanostructure of Au/Ag@NaYF4:Tb3+ is constructed. In such LRET system, the highly efficient LRET is dependent on the extent of spectral overlap between the different transitions of the Tb3+ ion and noble nanoparticles.

Resonance Energy Transfer Mediated by Metal-Dielectric Composite Nanostructures

2018 ◽  
Author(s):  
Noor Eldabagh ◽  
Matthew Micek ◽  
A. Eugene DePrince, III ◽  
Jonathan J. Foley
Keyword(s):  
Energy Transfer ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Small Molecule ◽  
Broad Band ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Noble Metal Nanoparticles ◽  
Localized Surface Plasmon ◽  
Metal Nanostructures

<p>Nanostructure-mediated energy transfer has attracted considerable attention</p> <p>as a template for photocatalysis and solar energy conversion, and the use</p> <p>of noble metal nanoparticles that support localized surface plasmon</p> <p>resonances (LSPRs) has been widely explored as a medium for realizing</p> <p>this paradigm. On the other hand, composite nanoparticles (CNPs)</p> <p>comprised of a large dielectric bead and smaller metal nanostructures have</p> <p>been shown to achieve efficient energy transfer to small-molecule</p> <p>adsorbates through the interplay between dielectric scattering resonances</p> <p>and the broad-band absorption associated with the metal nanostructure.</p> <p>This scattering mediated absorption can enable selective photochemistry</p> <p>without relying on the plasmonic properties of noble metal nanoparticles.</p> <p>While the precise photochemical mechanisms themselves remain unknown,</p> <p>resonance energy transfer (RET) is one feasible route for initiating the</p> <p>photochemistry. We demonstrate computationally that CNPs indeed</p> <p>facilitate RET to small-molecule adsorbates and that CNPs offer a</p> <p>framework in which one can design RET donors that outperform typical</p> <p>plasmonic nanoparticles employed within LSPR-driven RET under comparable</p> <p>illumination conditions. We also exploit the tunability of the resonances</p> <p>on the CNPs to realize strong coupling between the CNP and LSPR modes.</p>

Resonance Energy Transfer Mediated by Metal-Dielectric Composite Nanostructures

2018 ◽  
Author(s):  
Noor Eldabagh ◽  
Matthew Micek ◽  
A. Eugene DePrince, III ◽  
Jonathan J. Foley
Keyword(s):  
Energy Transfer ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Small Molecule ◽  
Broad Band ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Noble Metal Nanoparticles ◽  
Localized Surface Plasmon ◽  
Metal Nanostructures

<p>Nanostructure-mediated energy transfer has attracted considerable attention</p> <p>as a template for photocatalysis and solar energy conversion, and the use</p> <p>of noble metal nanoparticles that support localized surface plasmon</p> <p>resonances (LSPRs) has been widely explored as a medium for realizing</p> <p>this paradigm. On the other hand, composite nanoparticles (CNPs)</p> <p>comprised of a large dielectric bead and smaller metal nanostructures have</p> <p>been shown to achieve efficient energy transfer to small-molecule</p> <p>adsorbates through the interplay between dielectric scattering resonances</p> <p>and the broad-band absorption associated with the metal nanostructure.</p> <p>This scattering mediated absorption can enable selective photochemistry</p> <p>without relying on the plasmonic properties of noble metal nanoparticles.</p> <p>While the precise photochemical mechanisms themselves remain unknown,</p> <p>resonance energy transfer (RET) is one feasible route for initiating the</p> <p>photochemistry. We demonstrate computationally that CNPs indeed</p> <p>facilitate RET to small-molecule adsorbates and that CNPs offer a</p> <p>framework in which one can design RET donors that outperform typical</p> <p>plasmonic nanoparticles employed within LSPR-driven RET under comparable</p> <p>illumination conditions. We also exploit the tunability of the resonances</p> <p>on the CNPs to realize strong coupling between the CNP and LSPR modes.</p>

Aptamer-modified sensitive nanobiosensors for the specific detection of antibiotics

2020 ◽  
Vol 8 (37) ◽  
pp. 8607-8613
Author(s):  
Ying Zhang ◽  
Bo Duan ◽  
Qing Bao ◽  
Tao Yang ◽  
Tiancheng Wei ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Energy Transfer ◽  
Fluorescence Resonance Energy Transfer ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Specific Detection ◽  
Energy Donor ◽  
Energy Acceptor

A highly selective, fluorescence resonance energy transfer (FRET) based aptasensor for enrofloxacin (ENR) detection was developed using core–shell upconversion nanoparticles as an energy donor and graphene oxide as an energy acceptor.

scholarly journals Supramolecular FRET photocyclodimerization of anthracenecarboxylate with naphthalene-capped γ-cyclodextrin

2011 ◽  
Vol 7 ◽  
pp. 290-297 ◽  
Author(s):  
Qian Wang ◽  
Cheng Yang ◽  
Gaku Fukuhara ◽  
Tadashi Mori ◽  
Yu Liu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Association Constants ◽  
Förster Resonance Energy Transfer ◽  
Spectral Studies ◽  
Equivalent Amount ◽  
Highly Efficient ◽  
Circular Dichroïsm ◽  
Förster Resonance

γ-Cyclodextrin (CD) derivatives with a naphthalene moiety anchored to one or two of the glucose units of the CD were synthesized in order to investigate the effects of flexible and rigid capping upon complexation, as well as Förster resonance energy transfer (FRET) and photochirogenic behavior of anthracenecarboxylate (AC) moieties. UV–vis, circular dichroism and fluorescence spectral studies revealed that two AC molecules are simultaneously included in the modified γ-CD cavity to form a right-handed screw and also that the naphthalene cap efficiently transfers the singlet energy to AC included in the CD cavity via the FRET mechanism. Compared to native γ-CD, the modified γ-CDs showed much higher first association constants (K 1) but relatively lower second association constants (K 2) for AC, leading to two-fold larger overall affinities (K 1 K 2). Photocyclodimerization of AC with these modified γ-CDs produced more head-to-head (HH) dimers in much better enantiomeric excesses (ee) for anti-HH dimer compared to native γ-CD. Interestingly, FRET excitation further enhanced the chemical and optical yields of anti-HH dimer up to 36% and 35% ee, for which the highly efficient FRET sensitization within the CD cavity, minimizing the “contamination” from the achiral “outside” photoreaction, is responsible. FRET sensitization also enabled us to achieve the catalytic photocyclodimerization of AC with a sub-equivalent amount of chiral supramolecular host.

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