Semiconductor nanocrystals quantum dots

Tang, J. and Marcus, R. A. (2005) Diffusion-controlled electron transfer processes and power-law statistics of fluorescence intermittency of nanoparticles. Phys. Rev. Lett, 95, 107401-1-107401-4 Tang, J. and Marcus, R. A. (2005) Mechanisms of fluorescence blinking in semiconductor nanocrystal quantum dots./. Chem. Phys., 123,054704-1-054704-12. 

Polysilanes Porous Inorganic Materials Semiconductor Nanocrystal Quantum Dots Short-lived Intermediates Silicon Inorganic Chemistry. 

Biomineralization Metal Nanoparticles, Organization Applications of Metal Nanoparticles, Synthesis of Semiconductor Nanocrystal Quantum Dots. 

Mechanisms of Reaction of OrganometaUic Complexes Multi-Heme Cytochromes Enzymes Palladium OrganometaUic Chemistry Ruthenium OrganometaUic Chemistry Semiconductor Nanocrystal Quantum Dots Supported Organotransition Metal Compounds. 

Biomimetic Synthesis of Nanoparticles Carbonyl Complexes of the Transition Metals Metallic Materials Deposition Metal-organic Precursors Polynuclear Organometallic Cluster Complexes Porous Inorganic Materials Self-assembled Inorganic Architectures Semiconductor Nanocrystal Quantum Dots Sol-Gel Encapsulation of Metal and Semiconductor Nanocrystals. 

Fig. 9.1. The first biological labeling experiment with colloidal semiconductor nanocrystal quantum dots, reproduced from the 1998 paper by Ahvisatos and Weiss [1]. A larger size of dot, red emitting, has been used to label the actin fibers of the fibroblast cells, while a smaller, green-emitting set of dots is used to label the histone proteins in the nuclei. Today colloidal quantum dots are widely used in biological imaging, demonstrating the important role of nanoparticles in this field...

Recently in the field of physics of semiconductors and materials science a great attention has been paid to formation and optical properties of semiconductor nanocrystals (quantum dots, QDs) dispersed in inorganic matrixes. An interest to glassy materials with QDs is associated with their unique physical properties and possibility to create elements of optoelectronic devices. Phase separation processes followed by crystallization are the basic in production of such materials. They result in formation of semiconductor nanocrystals stabilized within a glass matrix. The materials are advanced for various applications because of optical and thermal stability and possibility to control optical features through the technology of glass preparation and post-synthesis thermal treatment. 

Semiconductor Nanocrystal Quantum Dots. Synthesis, Assembly, Spectroscopy and Applications, Ed. by A.L. Rogach (Springer-Verlag, Wien, Austria, 2008), 290 p. 

Figure 15.25 (a) Size- and material-dependent emission spectra of several surfactant-coated semiconductor nanocrystals (quantum dots) in a variety of sizes. The blue series (right) represents different sizes of CdSe nanocrystals with diameters of 2.1,2.4,3.1,3.6 and 4.6 nm (from right to left). The green series (centre) is of InP nanocrystals with diameters of 3.0, 3.5 and 4.6 nm. The red series (left) is of InAs nanocrystals with diameters of 2.8, 3.6,4.6, and 6.0 nm. (b) A true-colour image of the fluorescence of a series of silica-coated core (CdSe)-shell (ZnS or CdS) nanocrystals (reproduced from [39] with permission from AAAS). 

The modification of photoluminescence (PL) from atoms and molecules located near metal nanostructured surfaces and nanobodies is an interesting subject in nanoscience. Its study gives new insights into the basic aspects of field-matter interaction [1,2], Semiconductor nanocrystals (quantum dots, QDs) possess a number of advantageous features as light emitters [3] and fluorescent labels [4] as compared to ionic and molecular chromophores. 

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