220280-82-0

Upstream product

• 220280-70-6 3-{2,5-Dihexyl-4-[(triisopropylsilanyl)-ethynyl]-phenyl}-prop-2-yn-1-ol 
• 220280-76-2 2,5-dihexyl-4-(triisopropylethynyl)phenylacetylene 
• 220280-67-1 1,4-dihexyl-2-(3-hydroxyprop-1-ynyl)-5-iodobenzene 
• 220280-80-8 3-(4-{2,5-Dihexyl-4-[(triisopropylsilanyl)-ethynyl]-phenylethynyl}-2,5-dihexyl-phenyl)-prop-2-yn-1-ol 
• 162715-91-5 1,4-dihexyl-2,5-diiodobenzene 
• 22588-73-4 1,4-dihexylbenzene 

Downstream Products

• 220280-90-0 3-{4-[4-(4-{2,5-Dihexyl-4-[(triisopropylsilanyl)-ethynyl]-phenylethynyl}-2,5-dihexyl-phenylethynyl)-2,5-dihexyl-phenylethynyl]-2,5-dihexyl-phenyl}-prop-2-yn-1-ol 
• 921754-08-7 C₈₂H₁₁₈O₂Si 
• 1253907-39-9 C₁₁₂H₁₆₄OSi 
• 312624-91-2 2-{4-[4-(4-ethynyl-2,5-dihexyl-phenylethynyl)-2,5-dihexyl-phenylethynyl]-phenoxy}-tetrahydro-pyran 
• 312624-89-8 (4-{2,5-dihexyl-4-[4-(tetrahydro-pyran-2-yloxy)-phenylethynyl]-phenylethynyl}-2,5-dihexyl-phenylethynyl)-triisopropyl-silane 
• 921754-09-8 C₇₃H₉₈O₂ 

Relevant academic research and scientific papers

How flexible are poly(paraphenyleneethynylene)s?

Magnetic ends: By measuring the distribution of distances between two spin labels it is possible to quantify the flexibility of shape-persistent molecules (see picture). It is found that even the flexibility of short oligomers is described well by the wor

EPR probes with well-defined, long distances between two or three unpaired electrons

The synthesis of rod- and star-shaped compounds carrying two or three spin labels as end groups is described. The unpaired electrons are 2.8-5.1 nm apart from each other. The shape-persistent scaffolds were obtained through Pd-Cu-catalyzed alkynyl-aryl coupling and Pd-Cu-catalyzed, alkyne dimerization in the presence of oxygen using p-phenyleneethynylene as the basic shape-persistent building block. The spin label 1-oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylic acid (4) was attached through esterification of the terminal phenolic OH groups of the scaffold.

Synthesis of monodisperse oligo(para-phenyleneethynylene)s using orthogonal protecting groups with different polarity for terminal acetylene units

Monodisperse oligo(para-phenyleneethynylene)s (oligo-PPEs) were synthesized by a divergent-convergent synthesis starting from 1,4-dihexyl-2- (3-hydroxyprop-1-ynyl)-5-[2(triisopropylsilyl)ethynyl]benzene and using the Pd/Cu-catalyzed alkyne-aryl coupling.