A. Paul Alivisatos

Semiconductor Clusters, Nanocrystals, and Quantum Dots

Current research into semiconductor clusters is focused on the properties of quantum dots—fragments of semiconductor consisting of hundreds to many thousands of atoms—with the b...

Perspectives on the Physical Chemistry of Semiconductor Nanocrystals

Semiconductor nanocrystals exhibit a wide range of size-dependent properties. Variations in fundamental characteristics ranging from phase transitions to electrical conductivity...

Synthesis of PbS Nanorods and Other Ionic Nanocrystals of Complex Morphology by Sequential Cation Exchange Reactions

We show that nanocrystals (NCs) with well-established synthetic protocols for high shape and size monodispersity can be used as templates to independently control the NC composi...

Ion Exchange Synthesis of III–V Nanocrystals

III-V nanocrystals displaying high crystallinity and low size dispersity are difficult to access by direct synthesis from molecular precursors. Here, we demonstrate that cation ...

Semiconductor Nanocrystals as Fluorescent Biological Labels

Semiconductor nanocrystals were prepared for use as fluorescent probes in biological staining and diagnostics. Compared with conventional fluorophores, the nanocrystals have a n...

Organization of 'nanocrystal molecules' using DNA

Epitaxial Growth of Highly Luminescent CdSe/CdS Core/Shell Nanocrystals with Photostability and Electronic Accessibility

The synthesis of epitaxially grown, wurtzite CdSe/CdS core/shell nanocrystals is reported. Shells of up to three monolayers in thickness were grown on cores ranging in diameter ...

Kinetics of II-VI and III-V Colloidal Semiconductor Nanocrystal Growth:  “Focusing” of Size Distributions

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTKinetics of II-VI and III-V Colloidal Semiconductor Nanocrystal Growth: "Focusing" of Size DistributionsXiaogang Peng, J. Wickh...

From Molecules to Materials: Current Trends and Future Directions

The development, characterization, and exploitation of novel materials based on the assembly of molecular components is an exceptionally active and rapidly expanding field. For ...

Light-emitting diodes made from cadmium selenide nanocrystals and a semiconducting polymer

A single-electron transistor made from a cadmium selenide nanocrystal

Hybrid Nanorod-Polymer Solar Cells

We demonstrate that semiconductor nanorods can be used to fabricate readily processed and efficient hybrid solar cells together with polymers. By controlling nanorod length, we ...

Synthesis and Properties of Biocompatible Water-Soluble Silica-Coated CdSe/ZnS Semiconductor Quantum Dots

We describe the synthesis of water-soluble semiconductor nanoparticles and discuss and characterize their properties. Hydrophobic CdSe/ZnS core/shell nanocrystals with a core si...

Properties of Fluorescent Semiconductor Nanocrystals and their Application to Biological Labeling

We review recent advances in the development of colloidal fluorescent semiconductor nanocrystals (a class of quantum dots) for biological labeling. Although some of the photophy...

Time-gated biological imaging by use of colloidal quantum dots

The long (but not too long) fluorescence lifetime of CdSe semiconductor quantum dots was exploited to enhance fluorescence biological imaging contrast and sensitivity by time-ga...

Ultrahigh-resolution multicolor colocalization of single fluorescent probes

An optical ruler based on ultrahigh-resolution colocalization of single fluorescent probes is described in this paper. It relies on the use of two unique families of fluorophore...