117635-22-0

Upstream product

• 106-46-7 para-dichlorobenzene 
• 17049-49-9 octylmagnesium bromide 
• 10541-38-5 1,4-dioctylbenzene 

Downstream Products

• 848290-34-6 1-bromo-2,5-dioctyl-4-iodobenzene 
• 117635-30-0 2,5-Dioctyl-terephthalic acid 
• 557085-60-6 C₃₄H₅₈O₄ 
• 603121-64-8 4-(5,5-dimethyl-[1,3]dioxan-2-yl)-2,5-dioctyl-benzaldehyde 
• 488133-24-0 2-(4-bromo-2,5-dioctyl-phenyl)-5,5-dimethyl-[1,3]dioxane 
• 220980-45-0 2,5-dioctyl-benzene-1,4-dicarbaldehyde 
• 848290-37-9 4-bromo-2,5-dioctyl-4'-[(trimethylsilyl)ethynyl]tolane 
• 848290-35-7 4-iodo-2,5-dioctyl-4'-[(trimethylsilyl)ethynyl]tolane 
• 847549-44-4 4-iodo-2,5-dioctyl-4'-ethynyltolane 
• 848290-36-8 1-(4-bromo-2,5-dioctylphenyl)-2-(trimethylsilyl)acetylene 
• 225640-55-1 1-bromo-4-formyl-2,5-dioctylbenzene 
• 117635-26-4 2,5-Dioctyl-terephthalonitrile 

Relevant academic research and scientific papers

Synthesis, light harvesting, and energy transfer properties of a Zinc porphyrin linked poly(phenyleneethynylene)

The synthesis of a zinc porphyrin linked conjugated homopolymer is presented. The synthetic strategy employed a directional polymerization of 1-iodo-2,5-dioctyl-4'-ethynyltolane in the presence of [10,20-bis(3,5-bis-tert- butylphenyl]-5,15-diethynylporphinato]zinc(II) (12) or [10,20-bis(3,5-bis-tert- butylphenyl]-5,15-dibromoporphinato]zinc(II) (10). In the case of 12 the reaction was found to give a polymer product with a constant ratio of zinc porphyrin to incorporated monomer units regardless of the molecular weight. In the case of 10, however, the ratio of zinc porphyrin to incorporated monomer units decreased with increasing molecular weight of the polymer product. The polymer products were separated into fractions using preparative SEC. Studies of the energy transfer properties from the polymer to the zinc porphyrin revealed that there was little energy transfer in solution but quantitative energy transfer in the solid state. The polymer products proved difficult to handle in terms of device construction where a thin polymer film is sandwiched between two electrodes. We found this to be a consequence of the palladium catalysis employed during the polymerization. We finally discuss the issues concerning the problems with remnants from the Pd catalyst in the polymer samples and their removal.

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.

A High-Yield Route to 2,5-Di-n-alkyl-1,4-benzenedicarboxylic Acids

A simple and inexpensive method for preparing the previously unknown 2,5-di-n-alkylterephthalic acids 5a-d in high yields is presented.The length of the alkyl chains can be varied easily (n=6,8,12,16).