Oriented Polythiophene Nanofibers Grown from CdTe Quantum Dot Surfaces

Abstract

Highly crystalline, doped polythiophene is grown from the surfaces of CdTe quantum dots by ligand exchange of 3-thenoic acid followed by an oxidant-initiated polymerization. The facile synthesis generates a composite of highly ordered fibers, which exhibit efficient charge transfer between the polythiophene and the inorganic CdTe quantum dots.

PTh/Co3O4 nanocomposites as new conducting materials for micro/nano‐sized electronic devices

“…Studies reported in literature indicate that the unfilled PTh has a monoclinic or orthorhombic crystal structure . Experimental parameters used in the polymerization of the PTh and its derivatives can affect their crystal structure or lattice parameters . The lattice parameters of PTh used in this study were calculated from the analyses of diffraction peaks using the device software.…”

Ultrasensitive Detection of Carcinoembryonic Antigen by Chitosan/Polythiophene/CdTe Electrochemical Biosensor

“…Organic/inorganic hybridization is a feasible approach for surface modifications of QDs because their carboxyl functional groups on the surface of QDs can form covalent bonds with amino-functionalized molecules. Among them, conductive polymers such as polythiophene (PTh), polypyrrole (PPy), and polyaniline (PANi) are more attractive due to their good optoelectrical effects, remarkable biocompatibility, and easy fabrication properties. , Meanwhile, chitosan (CS), a positively charged natural polysaccharide with abundant hydroxyl and amino groups, is beneficial for the selective adsorption of antibody and dispersion of PTh/CdTe, as well as for improving the sensitivity of the biosensors for the detection of CEA. − To the best of our knowledge, there are no published data for the application of CS/PTh/CdTe as the platform and the signal probes in the fabrication of an electrochemical biosensor.…”

In Situ Fabrication of Poly(3-hexylthiophene)/ZnO Hybrid Nanowires with D/A Parallel-Lane Structure and Their Application in Photovoltaic Devices

“…Many researchers have focused on the ligand method, where solvent-assisted ligands were attached onto the nanocrystal surface to control their interparticle distance. , However, this has led to poorer photovoltaic device performance since an isolating barrier often forms between the polymer matrix and nanocrystals due to the capping ligands . To overcome these drawbacks, it is necessary to remove excess capping ligands or replace bulky ligands with smaller ones., Additionally, other routes employed to incorporate nanocrystals into conducting polymer also include deposition and grafting methods. − An alternative strategy, which involves π-conjugated polymer matrix containing a precursor of an inorganic component required for the synthesis of organic/inorganic nanohybrids, has recently received a great deal of attention on the fabrication of organic photovoltaic devices. This is because the so-called “in situ” formation routes possess important advantages in that they are ligand-free and do not require a separate nanoparticle synthesis step.…”