نتایج جستجو برای: polythiophene
تعداد نتایج: 567 فیلتر نتایج به سال:
pi-Conjugated polymers that are electrochemically cycled in ionic liquids have enhanced lifetimes without failure (up to 1 million cycles) and fast cycle switching speeds (100 ms). We report results for electrochemical mechanical actuators, electrochromic windows, and numeric displays made from three types of pi-conjugated polymers: polyaniline, polypyrrole, and polythiophene. Experiments were ...
ABSTRACT Polymeric polypyrrole and polythiophene solid phase microextraction (SPME) coatings were prepared using electropolymerization with a linear sweep voltammetry technique. Physicochemical properties were measured using different methods, in particular small angle X-ray scattering and scanning electron microscopy. By using innovative approaches for pore size measurement, we were able to ca...
We report the performance of polythiophene/fullerene solar cells with a hole-collecting buffer layer that was made using composite films of functionalized multi-walled carbon nanotube (f-MWCNT) and poly(3,4ethylenedioxythiphene):poly(styrenesulfonate) (PEDOT:PSS). The MWCNT was functionalized with carboxyl groups to bestow solubility in a weak base solvent for mixing with PEDOT:PSS. Results sho...
After reviewing the new physics and chemistry in high electrostatic fields we use density functional theory to show that in fields around 1.5 V/Å the bandgap of polythiophene reduces to zero leading to field-induced metallization. In poly(ethylene glycol), on the other hand, such fields lead to giant electrostriction of over 20% in length. Lastly, we give two examples of field-induced polymeriz...
Multifunctional materials that can simultaneously provide therapeutic action and image the ensuing results provide new strategies for treating various diseases. Here, we show that a cationic conjugated polyelectrolyte with a molecular design containing a polythiophene-porphyrin dyad (PTP) has efficient anticancer and antifungal activities. Upon photoexcitation, energy is efficiently transferred...
Two transferable physical parameters are incorporated into the Su-Schrieffer-Heeger Hamiltonian to model conducting polymers beyond polyacetylene: the parameter γ scales the electron-phonon coupling strength in aromatic rings and the other parameter ε specifies the heterogeneous core charges. This generic Hamiltonian predicts the fundamental band gaps of polythiophene, polypyrrole, polyfuran, p...
Related Articles Dynamics of solvent-free grafted nanoparticles J. Chem. Phys. 136, 044902 (2012) Energy transfer and dynamics studies of photoluminescence of polythiophene derivative in blend thin films J. Appl. Phys. 111, 023512 (2012) Note: Percolation in two-dimensional flexible chains systems J. Chem. Phys. 136, 046101 (2012) Ultraviolet and infrared femtosecond laser induced periodic surf...
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