Semiconductor nanocomposites of emissive flexible random copolymers and CdTe nanocrystals : preparation, characterization, and optoelectronic properties

Synthesis and characterization of a series of new emissive flexible copolymers composed of two kinds of special side-chain functional groups is demonstrated. One of the side-chain groups provides emissive properties, while the other serves as the ligand unit. The copolymers are used to prepare a new kind of CdTe nanocrystal-based semiconductor nanocomposite. Their structures and morphologies are characterized and their optoelectronic properties are studied. The results reveal that an energy-transfer process from the emissive random copolymers to the CdTe nanocrystals occurs, while a photoinduced charge transfer is estimated to be thermodynamically forbidden

Cadmium telluride nanocrystals : synthesis, growth mode and effect of reaction temperature on crystal structures

A series of cadmium telluride (CdTe) nanocrystals were synthesized by a modified organometallic synthesis method at various reaction temperatures ranging from 130 to 250°C. In this method, octadecylamine (ODA) was introduced as an additional coordinating component to the mixture of trioctylphosphine oxide (TOPO) and trioctylphosphine (TOP). CdO was used as a precursor. The prepared CdTe nanocrystals were studied by the absorption and emission spectra as well as the powder X-ray diffraction (XRD) patterns. The result shows that besides the traditional continuous-growth mode observed frequently at relatively high reaction temperature, a discontinuous-growth mode was confirmed at the initial growth stage of CdTe nanocrystals, arising from the change of the absorption spectra of CdTe nanocrystals with the reaction time at relatively low reaction temperature. The structures of CdTe nanocrystals, e.g., the cubic zinc blende structure at 160°C and the hexagonal wurtzite structure at 250°C, were characterized by XRD

Affibody-attached hyperbranched conjugated polyelectrolyte for targeted fluorescence imaging of HER2-positive cancer cell

10.1021/bm200563aBiomacromolecules1282966-2974BOMA

Energy transfer between conjugated-oligoelectrolyte-substituted POSS and gold nanocluster for multicolor intracellular detection of mercury ion

10.1021/jp203133tJournal of Physical Chemistry C1152613069-1307

Star-shaped glycosylated conjugated oligomer for two-photon fluorescence imaging of live cells

10.1021/cm201377uChemistry of Materials23204428-4434CMAT

Fluorescence and visual detection of single nucleotide polymorphism using cationic conjugated polyelectrolyte

10.1021/la203714eLangmuir281889-895LANG