Fluorescence resonance energy transfer in recognition-mediated polymer-quantum dot assemblies

Nandwana, Vikas
Fitzpatrick, Brian
Liu, Qian
Solntsev, Kyril M.
Yu, Xi
Tonga, Guelen Yesilbag
Eymur, Serkan
Tonga, Murat
Cooke, Graeme
Rotello, Vincent M.
We have demonstrated fluorescence resonance energy transfer facilitated by recognition mediated assembly of quantum dots and a tailor-made fluorescent polymer.


Fluorescence excitation by enhanced plasmon upconversion under continuous wave illumination
Taşgın, Mehmet Emre; Salakhutdinov, Ildar; Kendziora, Dania; Abak, Musa Kurtuluş; Turkpence, Deniz; Piantanida, Luca; Fruk, Ljiljana; Lazzarino, Marco; Bek, Alpan (Elsevier BV, 2016-09-01)
We demonstrate effective background-free continuous wave nonlinear optical excitation of molecules that are sandwiched between asymmetrically constructed plasmonic gold nanoparticle clusters. We observe that near infrared photons are converted to visible photons through efficient plasmonic second harmonic generation. Our theoretical model and simulations demonstrate that Fano resonances may be responsible for being able to observe nonlinear conversion using a continuous wave light source. We show that nonli...
GULEN, D (Elsevier BV, 1991-09-15)
The time evolution of the degree of fluorescence depolarization of a nonlinear molecular dimer has been investigated on the basis of a newly introduced nonlinear stochastic Liouville equation. Examples of the effects of the interplay of nonlinearity with nonadiabaticity and thermal dissipation have been provided to serve as a guide to experimental observations.
Effect of particle properties and light polarization on the plasmonic resonances in metallic nanoparticles
Guler, Urcan; Turan, Raşit (2010-08-02)
The resonance behavior of localized surface plasmons in silver and gold nanoparticles was studied in the visible and near-infrared regions of the electromagnetic spectrum. Arrays of nano-sized gold (Au) and silver (Ag) particles with different properties were produced with electron-beam lithography technique over glass substrates. The effect of the particle size, shape variations, period, thickness, metal type, substrate type and sulfidation were studied via transmission and reflectance measurements. The re...
Fluorescence enhancement in hot spots of AFM-designed gold nanoparticle sandwiches
Bek, Alpan; RINGLER, Moritz; MAYILO, Sergiy; KLAR, Thomas A.; FELDMANN, Jochen (2008-02-01)
We observe an enhancement of fluorescence from a single fluorescent sphere, which is sandwiched between two individual gold nanoparticles, forming a hot spot of strong field enhancement. The fluorescence enhancing hot spot is custom-designed by the deliberate assembly of gold nanoparticles with an atomic force microscope cantilever. The fluorescence intensity is monitored while the separation between the two gold nanoparticles is reduced by gradually pushing the gold nanoparticles closer to the fluorescent ...
Large structure-dependent room temperature exchange bias in self-assembled BiFeO3 nanoparticles
Goswami, Sudipta; Sahoo, Aditi; Bhattacharya, Dipten; Karci, Ozgur; Mohanty, P. K. (2020-08-01)
We studied the magnetic properties of self-assembled aggregates of BiFeO3 nanoparticles (similar to 20 nm-40 nm). The aggregates formed two different structures-one with limited and another with massive crosslinking-via the "drying-mediated self-assembly" process following dispersion of the nanoparticles within different organic solvents. They exhibit large coercivity H-C (>1000 Oe) and exchange bias field H-E (similar to 350-900 Oe) in comparison to what is observed in isolated nanoparticles (H-C similar t...
Citation Formats
V. Nandwana et al., “Fluorescence resonance energy transfer in recognition-mediated polymer-quantum dot assemblies,” POLYMER CHEMISTRY, pp. 3072–3076, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/68558.