Poly(3-dodecyl-2,2’-bithiophene)(PDBT), Poly(3-dodecylthiophene)(PDT), and poly(3,4-dibutoxythiophene)(PDBOT) were chemically prepared and doped with copper(II) perchlorate. The conductivity, stability and spectral change of the doped polymers during storage in air were compared. The results suggest that copper(II) perchlorate is an effective oxidant. keywords: Coupling reactions, UV-Vis-NIR ab...

Colorimetric and fluorescent dual detection of cysteine (Cys) and homocysteine (Hcy) has been realized based on the ionic self-assembly of a cationic polythiophene derivative with aromatic derivatives of Cys and Hcy formed in situ.

We have studied the photoexcitation dynamics in electrochemically polymerized polythiophene thin films using transient photomodulation spectroscopy measured from 100 fs to 20 ms in the spectral range from 0.25 to 2.2 eV, and by the novel technique of absorption-detected magnetic resonance (ADMR). Our results show that photogenerated exciton polarons are formed within 300 fs; they subsequently d...

Polythiophene/chitosan magnetic nanocomposite as an adsorbent of magnetic solid phase extraction was proposed for the isolation of fluoxetine in aqueous and biological samples prior to fluorescence detection at 246 nm. The synthesized nanoparticles, chitosan and polythiophene magnetic nanocomposite, were characterized by scanning electron microscopy, FT-IR, TGA, and EDAX. The separation of the ...

We present an experimental and theoretical study of the electromagnetic interaction between a single gold nanoparticle and a thin gold substrate separated by a sub-50 nm-thick optically absorptive polythiophene spacer layer. Single-particle dark-field scattering spectra show distinct resonance features assigned to four different modes: a horizontal image dipole coupling mode, a vertical image d...

Oxidative chemical vapor deposition (oCVD) represents a novel CVD method for producing polymer thin films in a one step polymerization and deposition process. Using oCVD, we can synthesize polymers without any need for solvents. Here, we have utilized oCVD to create conjugated thiophene polymers directly within the complex structure of carbon nanofiber-based electrochemical supercapacitor elect...

We report optical-absorption, photoluminescence (PL), and picosecond photoinduced absorption (PA) decay in films of poly-3-hexyl-thiophene at pressures up to 80 kbar. The spectral bands redshift nonlinearly with pressure and the PL intensity decreases markedly. Thermochromic transitions are completely inhibited at pressures as low as 14 kbar. The picosecond recovery of the PA decay at high pres...

A colorimetric probe for the detection of copper(II) ions in aqueous media by the naked eye has been developed based on a supramolecular complex comprised of a cationic polythiophene derivative and ATP with a detection limit as low as 0.05 mM.

A novel method to control polythiophene redox potentials based on supramolecular complexation with the native polysaccharide, schizophyllan (SPG) is reported, which can importantly improve air stability for easy handling and processing.

Molecular imprints of the tobacco necrosis virus (TNV) have been formed within polythiophene nanofilms with an approximate thickness of 200nm. These films have been electrochemically deposited onto conducting Au surfaces. Upon rebinding, the TNV-polythiophene complex changes the fluorescence intensity of the nanofilm. The fluorescence intensity at 410nm was observed to be proportional to the co...