23354-88-3

Upstream product

• 23354-94-1 1,4-bis(2-thienyl)benzene 
• 106-37-6 1.4-dibromobenzene 

Downstream Products

• 1379804-24-6 1,4-di(5-trimethoxysilylthien-2-yl)benzene 

Relevant academic research and scientific papers

Synthesis and mesomorphic behavior of novel (bisthiophene)benzene carbazole nematic liquid crystals

Two structural isomers of highly conjugated (bisthiophene)benzene carbazoles were designed and synthesized to study the effect of the substitution pattern on their liquid crystalline behavior, transition temperatures, energy levels, and band gaps. Unusual

Influence of fluorination in π-extended backbone polydiketopyrrolopyrroles on charge carrier mobility and depth-dependent molecular alignment

A series of π-extended polydiketopyrrolo[3,4-c]pyrroles with a varying degree of fluorination on the thiophene-phenyl-thiophene comonomer was synthesized by Stille polycondensation. The influence of the degree of fluorination was studied with regard to th

Simple access to sol-gel precursors bearing fluorescent aromatic core units

Di-, tri-, and tetrathienyl-substituted polycyclic aromatic fluorophores were prepared from different aryldi-, aryltri-, or aryltetrahalides by a simple and fast Suzuki coupling. The reaction was optimized for the synthesis of the desired materials on mul

Conformation as a protecting group: A regioselective aromatic bromination en route to complex π-electron systems

(Chemical Equation Presented) A new strategy to achieve regioselective functionalization of a sterically congested aromatic system driven by conformational demands is described. Electrophilic substitution occurs at the more planarizable subunit without undesired chemistry at mutually reactive sites and without the need for protecting or masking groups that must be manipulated later. Model studies are described to understand this selectivity, and possibilities for the construction of orthogonal, differentially substituted π-systems of relevance for molecular electronics are demonstrated.

CONJUGATED POLYMERS CONTAINING SPIROBIFLUORENE UNITS AND THE USE THEREOF

The present invention relates to novel conjugated polymers comprising spirobifluorene units and their use in optoelectronic devices, preferably in, for example, displays based on polymeric organic light-emitting diodes.

Synthesis of Thiophene/phenylene Co-oligomers. IV [1]. 6- to 8-Ring Molecules

We report the synthesis of various thiophene/phenylene co-oligomers with total number of thiophene and benzene (phenylene) rings of 6 to 8. These compounds include a phenyl-capped sexithiophene, a thienyl-capped quaterphenylene, as well as block and alternating co-oligomers. The synthesis is based on either the Suzuki coupling reaction or the direct dimerization coupling. The latter method produces symmetric molecules with an even total ring number. These reaction schemes enables us to obtain the target compounds in high quality. Although the resulting materials are difficult to dissolve in organic solvents and therefore difficult to identify by usual 1H nmr spectroscopy, they have successfully been identified through Fourier-transform ir spectroscopy. The specific group frequencies of ring-stretching and out-of plane deformation modes are characteristic of the substitution pattern of the individual thiophene and benzene rings.

The preparations and some properties of mixed aryl-thienyl oligomers and polymers

The syntheses by transition metal coupling reactions of a large number of oligomers constructed from benzene and thiophene rings are described. The first use of arylcadmium chlorides for such coupling reactions is reported. The routes chosen allow for rational variation in the modes of linkage, the substitution and the proportions of the two units. The benzene and thiophene rings are always joined in a known order and may bear a wide variety of regularly spaced functional groups. Additionally the shape of the oligomers may be varied at will. In all cases p-type doping with iodine or ferric chloride leads to large enhancements in conductivity.