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Reversible tunability of the near-infrared valence band plasmon resonance in Cu(2-x)Se nanocrystals.
We demonstrate that colloidal Cu(2-x)Se nanocrystals exhibit a well-defined infrared absorption band due to the excitation of positive charge carrier oscillations (i.e., a valence band plasmon mode),Expand
Fluorescent, magnetic and plasmonic—Hybrid multifunctional colloidal nano objects
Summary Progress in colloidal nanochemistry has been tremendous in the last decades. Nowadays a large variety of materials, sizes and shapes are accessible via colloid chemical methods. In the recentExpand
Synthesis of extremely small CdSe and bright blue luminescent CdSe/ZnS nanoparticles by a prefocused hot-injection approach
Although cadmium selenide is a well-explored material in aqueous and hot-injection synthesis of semiconductor quantum dots, only a few syntheses are reported for the preparation of extremely smallExpand
Multifunctional nanobeads based on quantum dots and magnetic nanoparticles: synthesis and cancer cell targeting and sorting.
Folate receptor mediated cellular uptake of the folic acid-functionalized nanobeads is proven via both confocal imaging and transmission electron microscopy characterization and shows quantitative recovering of targeted cells even when they are present at low percentage. Expand
Plasmon dynamics in colloidal Cu₂-xSe nanocrystals.
The experimental results were interpreted according to the two-temperature model and revealed the existence of strong nonlinearities in the plasmonic absorption due to the much lower carrier density of Cu(2-x)Se compared to noble metals, which led to ultrafast control of the probe signal with modulation depth exceeding 40% in transmission. Expand
Determination of band offsets in heterostructured colloidal nanorods using scanning tunneling spectroscopy.
It is demonstrated that scanning tunneling spectroscopy along with theoretical modeling can be used to determine band-offsets in such nanostructures and the generality of the approach is demonstrated in ZnSe/CdS nanocrystals where their type II band alignment, leading to electron-hole separation, is manifested. Expand
ZnSe quantum dots within CdS nanorods: a seeded-growth type-II system.
CdS nanorods with embedded ZnSe quantum dots are developed, which constitute an example of a nanorod heterostructure with a seed of zinc blende crystal structure, which is of high interest because of the type-II potential profile characteristics ofZnSe and CdS. Expand
A cast-mold approach to iron oxide and Pt/iron oxide nanocontainers and nanoparticles with a reactive concave surface.
The concave nanoparticles are capable of destabilizing Au nanocrystals of sizes matching that of the concave region and are proposed as recoverable photocatalysts for the reduction of a model dye. Expand
Tuning the LSPR in copper chalcogenide nanoparticles by cation intercalation, cation exchange and metal growth.
The comparison of the cation exchange (Cu2-xSe) and intercalation (Cu1.1S) of Ag (I) and Cu(I) has shown that Ag( I) causes a non reversible, air stable shift of the LSPR. Expand
Hollow Iron Oxide Nanoparticles in Polymer Nanobeads as MRI Contrast Agents
Magnetic nanobeads are synthesized by coprecipitation of hollow iron oxide nanoparticles and an amphiphilic polymer. The resulting nanobeads can be tuned in diameter and nanoparticle content. X-rayExpand