CdSe – TechConnect Briefs

“In-Situ” Monitoring of CdSe/ZnS Quantum Dot Growth During Microwave Synthesis

Zane A., McCracken C., Knight D., Waldman W.J., Dutta P., The Ohio State University, US

The microwave synthesis of CdSe/ZnS quantum dots was observed in real-time using fluorescence spectroscopy for the first time. This technique was used as an efficient way to optimize the temperature and time of the synthesis, [...]

CdSe Nanoparticles in Silica Matrix by Sol Gel method

Hullavarad N., Hullavarad S., Hullavarad N., Hullavarad S., University of Alaska Fairbanks, US

‘Quantum dots’ or nanoparticles of diverse semiconductor materials are extensively studied because of their interesting size dependent properties. It is further interesting to organize the quantum dots in the form of superlattices thin films, monolithics, [...]

CdSe nano-particles coated with thiol-terminated oligo(ethylene oxide)for protein targeting reagent

Ito Y., Tsutsumi H., Yamaguchi University, JP

Fluorescent labeling reagents are used as medical and biochemical research reagents that label specific protein, antigen, antibody, and DNA. However, the chromophoric groups (organic compounds) usually are not stable under long-time ultra violet (UV) excitation. [...]

Single dot luminescence characteristics of CdSe/ZnS core-shell structured quantum dots with different ligands

Yu H., Song N.W., Moon D.W., Shin S.K., Korea Research Institute of Standards and Science, KR

Chemical derivatizations with different ligands were perfomed on CdSe/ZnS core-shell quantum dots (QDs). The role of ligands serves to increase water solubility and bio-compatibility of QDs for in-vivo biomedical fluorescence imaging. These QDs were synthesized [...]

CdSe Nanoparticles Modified with Water-soluble Terpolymers and their Application to Biomarkers

Tsutsumi H., Yamada M., Yasui M., Yamaguchi University, JP

Fluorescent labeling reagents are used as diagnosis and research reagents that label specific protein, antigen, antibody, and DNA. However, the chromophoric groups are not stable under long-time Ultra Violet (UV) excitation measurement condition. Nanometer-sized semiconductor [...]

DNA-Based Nanotechnology: Highly Luminescent CdSe – DNA Nanoscale – Engineered Complexes

Kislov V., Artemyev M., Khomutov G., Russian Academy of Sciences, RU

We present some new results within the concept of using DNA molecules as building blocks and nanotemplates for controllable fabrication of various bioinorganic nanostructures due to their unique physical-chemical properties and recognition capabilities and the [...]

Polymer-Controlled Growth of CdSe Nanoparticles into Micro- and Nanowires

Fahmi A.W., Oertel U., Steinert V., Moriarty P., Stamm M., University of Nottingham, UK

This work reports an easy and effective method to prepare CdSe semiconductors nanoparticles stabilised by using amphiphile diblock copolymer polystyrene-block-polyvinylpyridine [PS-b-P4VP] in nonaqueous medium. spin coating on native oxide Si-wafers showed a core-shell structure of [...]