Picosecond energy transfer in quantum dot Langmuir-Blodgett nanoassemblies

Article Abstract:

The spectrally resolved dynamics of Forster energy transfer (ET) in single monolayers and bilayers of semiconductor nanocrystal quantum dots assembled (CdSe NQDs) fabricated using Langmuir-Blodgett (LB) techniques are studied. By analyzing spectrally resolved photoluminescence (PL) dynamics, it was found that ET is dominated by interactions of a center, donor NQD with NQD acceptors from the first three shells; as a result, the ET-related PL dynamics can be fit by a sum of three exponential decay terms in which each term is associated with a specific shell

Thin films, Multilayered, Multilayered thin films, Energy transfer, Photoluminescence

---

Light amplification using inverted core/shell nanocrystals: towards lasing in the single-exciton regime

Article Abstract:

A novel approach to achieve NC lasing in the Auger-recombination-free regime by using type II NC heterostructures that promote spatial separation on electrons and holes is explored. It is presented that such hetero-NCs can exhibit strong repulsive excition-excition interactions that lead significantly reduced excited-state absorption associated with NCs containing single electron-hole pairs.

Optical properties, Electrons, Excited state chemistry

---

Inter-specific vibrational spectroscopy of molecules with visible lights

Article Abstract:

A more general solution, a time-domain spectroscopy based on fourth-order Raman scattering in which vibrational coherences are pumped by a Raman process is proposed. Fourier transformation of the oscillation provides a vibrational spectrum of 0-1000 cm(super -1) for the dye located at the ir-solution interface.

Fourier transform infrared spectroscopy, Raman effect, Vibrational spectra

Similar abstracts:

• Abstracts: H-aggregate formation in squarylium Langmuir-Blodgett films. Solid -state H(super 2) NMR study of phase transitions in deuterated crystals of 5-methyl-9-hydroxyphenalen-1-one and 5-bromo-9-hydroxyphenalen-1-one
• Abstracts: Mechanism of meniscus oscillations and stripe pattern formation in Langmuir-Blodgett films. Dissociation of fatty acid and counterion binding at the Langmuir monolayer deposition: Theoretical considerations
• Abstracts: Excitation energy transfer in tris(8-hydroxyquinolinato)aluminium doped with a pentacene derivative. Structural analysis of ZON-type aluminophosphates by solid state NMR
• Abstracts: Phased behavior and induced interdigitation in bilayers studied with dissipative particle dynamics. Calculation of molecular configuration integrals
• Abstracts: Cryogenic charge transport in oxidized purple bacterial light-harvesting 1 complexes. Modeling charge transfer in oxidized bacterial antenna complexes

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.