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Tuning the Electronic Structure of Conjugated Polymers with Fluoroalkyl Substitution: Alternating Alkyl/Perfluoroalkyl-Substituted Polythiophene

“…Chemical shifts are reported relative to internal tetramethylsilane. 13 C NMR spectra were obtained at 75.5 MHz. IR analysis was performed on a Nicolet 520 FTIR spectrometer.…”

“…In addition to the variation of the comonomers used, the properties of copolymers depend on their microstructural sequence (e.g., random, alternating, block, and graft). Random copolymers containing thiophene have been prepared which incorporate a variety of other arenes (e.g., pyrrole, fluorene, , quinoxaline, thiazole) to provide materials with tunable electronic properties. Extensive studies have also led to the preparation of copolymers of 3-alkylthiophenes and other 3-substituted thiophenes such as those with alkyl, alkoxyl, oligo(ethylene glycol), and ionic substituents.…”

The electrochemistry of alkoxylated arylene vinylene oligomers: Oxidation potentials and diffusion coefficients

“…All reactions were carried out under a nitrogen atmosphere using standard vacuum line techniques. 1 H and 13 C NMR spectra were recorded at room temperature in CDCl 3 using a Varian Unity spectrometer at 400 and 100 MHz, respectively, with tetramethylsilane (TMS) as the internal reference. UV-Vis absorption and emission spectra were recorded for solutions (about 5 · 10 À6 M) of the oligomers in CH 2 Cl 2 on a Cary 5 UVVis spectrometer and a Cary Eclipse Fluorometer, respectively.…”

“…In recent years there has been an increasing interest in organic semiconductors such as p-conjugated polymers [1][2][3] and oligomers [4][5][6] as the electro-active material in conductimetric gas sensors [4,5,7]. One of the ways to obtain this material is the electrochemical electron exchange, also called electrochemical doping, leading to electro-oxidation (or electro-reduction) of the original material.…”

Tailoring Optical Properties of π‐Conjugated Statistical Co‐Oligomers Composed of 3‐Pentylthiophene and 3‐[(E)‐2‐(1‐Naphthyl)­vinyl]thiophene through the Monomer Ratio in the Main Chain

“…For this reason, optoelectronic properties of the conducting polymers can be controlled to a large extent by functionalization or by tailoring chemical constitution of the main chain. The latter is usually achieved by copolymerization of two or three different types of monomers . The resulting copolymers have either regular alternating donor–acceptor (D–A) structure, or form a diblock polymer composed of two D‐ and A‐type segments.…”